[
  {
    "path": ".gitignore",
    "content": "# Logs\nnpm-debug.log*\n\n# Output\nlib/\n\n# NPM Dependency\nnode_modules/\npackage-lock.json\n\n# TypeScript cache\n*.tsbuildinfo\n"
  },
  {
    "path": "LICENCE.md",
    "content": "Attribution 4.0 International\n\n=======================================================================\n\nCreative Commons Corporation (\"Creative Commons\") is not a law firm and\ndoes not provide legal services or legal advice. Distribution of\nCreative Commons public licenses does not create a lawyer-client or\nother relationship. Creative Commons makes its licenses and related\ninformation available on an \"as-is\" basis. Creative Commons gives no\nwarranties regarding its licenses, any material licensed under their\nterms and conditions, or any related information. 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You must comply with the conditions in Section 3(a) if You Share\n     all or a substantial portion of the contents of the database.\n\nFor the avoidance of doubt, this Section 4 supplements and does not\nreplace Your obligations under this Public License where the Licensed\nRights include other Copyright and Similar Rights.\n\n\nSection 5 -- Disclaimer of Warranties and Limitation of Liability.\n\n  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE\n     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS\n     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF\n     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,\n     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,\n     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR\n     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,\n     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT\n     KNOWN OR DISCOVERABLE. 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If the provision\n     cannot be reformed, it shall be severed from this Public License\n     without affecting the enforceability of the remaining terms and\n     conditions.\n\n  c. No term or condition of this Public License will be waived and no\n     failure to comply consented to unless expressly agreed to by the\n     Licensor.\n\n  d. Nothing in this Public License constitutes or may be interpreted\n     as a limitation upon, or waiver of, any privileges and immunities\n     that apply to the Licensor or You, including from the legal\n     processes of any jurisdiction or authority.\n\n\n=======================================================================\n\nCreative Commons is not a party to its public\nlicenses. Notwithstanding, Creative Commons may elect to apply one of\nits public licenses to material it publishes and in those instances\nwill be considered the “Licensor.” The text of the Creative Commons\npublic licenses is dedicated to the public domain under the CC0 Public\nDomain Dedication. Except for the limited purpose of indicating that\nmaterial is shared under a Creative Commons public license or as\notherwise permitted by the Creative Commons policies published at\ncreativecommons.org/policies, Creative Commons does not authorize the\nuse of the trademark \"Creative Commons\" or any other trademark or logo\nof Creative Commons without its prior written consent including,\nwithout limitation, in connection with any unauthorized modifications\nto any of its public licenses or any other arrangements,\nunderstandings, or agreements concerning use of licensed material. For\nthe avoidance of doubt, this paragraph does not form part of the\npublic licenses.\n\nCreative Commons may be contacted at creativecommons.org.\n"
  },
  {
    "path": "README.md",
    "content": "[![YouTube Channel Subscribers](https://img.shields.io/youtube/channel/subscribers/UCGD_0i6L48hucTiiyhb5QzQ?style=social)](https://www.youtube.com/channel/UCGD_0i6L48hucTiiyhb5QzQ)\n\n# The course\nYou can find it on [BooleanArt](https://www.booleanart.com/courses). My objective has always been to help people ❤️\n\n# Usage: What you do\nOpen the lesson folder relevant to you. Run `npm i`. Play with it 🌹\n\n# Usage: What I do\n```\ncd demo\nnpm i \n```\n\nNow write the code specific to the lesson. Once done, move all the files to the folder relevant to the lesson ❤️\n"
  },
  {
    "path": "advanced-typescript/150 native node support/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "advanced-typescript/150 native node support/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "advanced-typescript/150 native node support/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\",\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"@types/node\": \"^20.14.8\",\n    \"typescript\": \"5.8.0-beta\"\n  }\n}\n"
  },
  {
    "path": "advanced-typescript/150 native node support/src/index.ts",
    "content": "function log(message: string) {\n  console.log(message);\n}\n\nlog(\"Native NodeJS Support!\");\n\ntype LoginMode = 'app' | 'email' | 'social';"
  },
  {
    "path": "advanced-typescript/150 native node support/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig to read more about this file */\n\n    /* Projects */\n    // \"incremental\": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */\n    // \"composite\": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */\n    // \"tsBuildInfoFile\": \"./.tsbuildinfo\",              /* Specify the path to .tsbuildinfo incremental compilation file. */\n    // \"disableSourceOfProjectReferenceRedirect\": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */\n    // \"disableSolutionSearching\": true,                 /* Opt a project out of multi-project reference checking when editing. */\n    // \"disableReferencedProjectLoad\": true,             /* Reduce the number of projects loaded automatically by TypeScript. */\n\n    /* Language and Environment */\n    \"target\": \"es2016\",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */\n    // \"lib\": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */\n    // \"jsx\": \"preserve\",                                /* Specify what JSX code is generated. */\n    // \"libReplacement\": true,                           /* Enable lib replacement. */\n    // \"experimentalDecorators\": true,                   /* Enable experimental support for legacy experimental decorators. */\n    // \"emitDecoratorMetadata\": true,                    /* Emit design-type metadata for decorated declarations in source files. */\n    // \"jsxFactory\": \"\",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */\n    // \"jsxFragmentFactory\": \"\",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */\n    // \"jsxImportSource\": \"\",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */\n    // \"reactNamespace\": \"\",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */\n    // \"noLib\": true,                                    /* Disable including any library files, including the default lib.d.ts. */\n    // \"useDefineForClassFields\": true,                  /* Emit ECMAScript-standard-compliant class fields. */\n    // \"moduleDetection\": \"auto\",                        /* Control what method is used to detect module-format JS files. */\n\n    /* Modules */\n    \"module\": \"commonjs\",                                /* Specify what module code is generated. */\n    // \"rootDir\": \"./\",                                  /* Specify the root folder within your source files. */\n    // \"moduleResolution\": \"node10\",                     /* Specify how TypeScript looks up a file from a given module specifier. */\n    // \"baseUrl\": \"./\",                                  /* Specify the base directory to resolve non-relative module names. */\n    // \"paths\": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */\n    // \"rootDirs\": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */\n    // \"typeRoots\": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */\n    // \"types\": [],                                      /* Specify type package names to be included without being referenced in a source file. */\n    // \"allowUmdGlobalAccess\": true,                     /* Allow accessing UMD globals from modules. */\n    // \"moduleSuffixes\": [],                             /* List of file name suffixes to search when resolving a module. */\n    // \"allowImportingTsExtensions\": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */\n    // \"rewriteRelativeImportExtensions\": true,          /* Rewrite '.ts', '.tsx', '.mts', and '.cts' file extensions in relative import paths to their JavaScript equivalent in output files. */\n    // \"resolvePackageJsonExports\": true,                /* Use the package.json 'exports' field when resolving package imports. */\n    // \"resolvePackageJsonImports\": true,                /* Use the package.json 'imports' field when resolving imports. */\n    // \"customConditions\": [],                           /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */\n    // \"noUncheckedSideEffectImports\": true,             /* Check side effect imports. */\n    // \"resolveJsonModule\": true,                        /* Enable importing .json files. */\n    // \"allowArbitraryExtensions\": true,                 /* Enable importing files with any extension, provided a declaration file is present. */\n    // \"noResolve\": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */\n\n    /* JavaScript Support */\n    // \"allowJs\": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */\n    // \"checkJs\": true,                                  /* Enable error reporting in type-checked JavaScript files. */\n    // \"maxNodeModuleJsDepth\": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */\n\n    /* Emit */\n    // \"declaration\": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */\n    // \"declarationMap\": true,                           /* Create sourcemaps for d.ts files. */\n    // \"emitDeclarationOnly\": true,                      /* Only output d.ts files and not JavaScript files. */\n    // \"sourceMap\": true,                                /* Create source map files for emitted JavaScript files. */\n    // \"inlineSourceMap\": true,                          /* Include sourcemap files inside the emitted JavaScript. */\n    // \"noEmit\": true,                                   /* Disable emitting files from a compilation. */\n    // \"outFile\": \"./\",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */\n    // \"outDir\": \"./\",                                   /* Specify an output folder for all emitted files. */\n    // \"removeComments\": true,                           /* Disable emitting comments. */\n    // \"importHelpers\": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */\n    // \"downlevelIteration\": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */\n    // \"sourceRoot\": \"\",                                 /* Specify the root path for debuggers to find the reference source code. */\n    // \"mapRoot\": \"\",                                    /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSources\": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */\n    // \"emitBOM\": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */\n    // \"newLine\": \"crlf\",                                /* Set the newline character for emitting files. */\n    // \"stripInternal\": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */\n    // \"noEmitHelpers\": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */\n    // \"noEmitOnError\": true,                            /* Disable emitting files if any type checking errors are reported. */\n    // \"preserveConstEnums\": true,                       /* Disable erasing 'const enum' declarations in generated code. */\n    // \"declarationDir\": \"./\",                           /* Specify the output directory for generated declaration files. */\n\n    /* Interop Constraints */\n    // \"isolatedModules\": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */\n    // \"verbatimModuleSyntax\": true,                     /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */\n    // \"isolatedDeclarations\": true,                     /* Require sufficient annotation on exports so other tools can trivially generate declaration files. */\n    \"erasableSyntaxOnly\": true,                       /* Do not allow runtime constructs that are not part of ECMAScript. */\n    // \"allowSyntheticDefaultImports\": true,             /* Allow 'import x from y' when a module doesn't have a default export. */\n    \"esModuleInterop\": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */\n    // \"preserveSymlinks\": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */\n    \"forceConsistentCasingInFileNames\": true,            /* Ensure that casing is correct in imports. */\n\n    /* Type Checking */\n    \"strict\": true,                                      /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                         /* When type checking, take into account 'null' and 'undefined'. */\n    // \"strictFunctionTypes\": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */\n    // \"strictBindCallApply\": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */\n    // \"strictPropertyInitialization\": true,             /* Check for class properties that are declared but not set in the constructor. */\n    // \"strictBuiltinIteratorReturn\": true,              /* Built-in iterators are instantiated with a 'TReturn' type of 'undefined' instead of 'any'. */\n    // \"noImplicitThis\": true,                           /* Enable error reporting when 'this' is given the type 'any'. */\n    // \"useUnknownInCatchVariables\": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */\n    // \"alwaysStrict\": true,                             /* Ensure 'use strict' is always emitted. */\n    // \"noUnusedLocals\": true,                           /* Enable error reporting when local variables aren't read. */\n    // \"noUnusedParameters\": true,                       /* Raise an error when a function parameter isn't read. */\n    // \"exactOptionalPropertyTypes\": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */\n    // \"noImplicitReturns\": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */\n    // \"noFallthroughCasesInSwitch\": true,               /* Enable error reporting for fallthrough cases in switch statements. */\n    // \"noUncheckedIndexedAccess\": true,                 /* Add 'undefined' to a type when accessed using an index. */\n    // \"noImplicitOverride\": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */\n    // \"noPropertyAccessFromIndexSignature\": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */\n    // \"allowUnusedLabels\": true,                        /* Disable error reporting for unused labels. */\n    // \"allowUnreachableCode\": true,                     /* Disable error reporting for unreachable code. */\n\n    /* Completeness */\n    // \"skipDefaultLibCheck\": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */\n    \"skipLibCheck\": true                                 /* Skip type checking all .d.ts files. */\n  }\n}\n"
  },
  {
    "path": "demo/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "demo/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "demo/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\",\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"@types/node\": \"^20.14.8\",\n    \"typescript\": \"5.9.3\"\n  }\n}\n"
  },
  {
    "path": "demo/src/app.ts",
    "content": "// import { initiateLogin } from './initiateLogin';\n// import { LoginMode } from './index';\n\n// initiateLogin('app'); // Error\n// initiateLogin(LoginMode.app);"
  },
  {
    "path": "demo/src/example.js",
    "content": "const fun = () => { };\n\nObject.setPrototypeOf(fun, { debug: 'fancy' });\n\nconsole.log(fun.debug); // fancy\n\nconsole.log(Object.hasOwn(fun, 'debug')); // false\n"
  },
  {
    "path": "demo/src/feature.ts",
    "content": "initializationWithSideEffects();\n\nfunction initializationWithSideEffects() {\n  specialConstant = 42;\n  console.log(\"Side effects have occurred!\");\n}\n\nexport let specialConstant: number;"
  },
  {
    "path": "demo/src/index.ts",
    "content": "import defer * as feature from \"./feature\";\n\nsetTimeout(() => {\n  console.log(feature.specialConstant);\n}, 1000);\n"
  },
  {
    "path": "demo/tsconfig.json",
    "content": "{\n  // Visit https://aka.ms/tsconfig to read more about this file\n  \"compilerOptions\": {\n    // File Layout\n    // \"rootDir\": \"./src\",\n    // \"outDir\": \"./dist\",\n\n    // Environment Settings\n    // See also https://aka.ms/tsconfig/module\n    \"module\": \"esnext\",\n    \"target\": \"esnext\",\n    \"types\": [],\n    // For nodejs:\n    // \"lib\": [\"esnext\"],\n    // \"types\": [\"node\"],\n    // and npm install -D @types/node\n\n    // Other Outputs\n    \"sourceMap\": true,\n    \"declaration\": true,\n    \"declarationMap\": true,\n\n    // Stricter Typechecking Options\n    \"noUncheckedIndexedAccess\": true,\n    \"exactOptionalPropertyTypes\": true,\n\n    // Style Options\n    // \"noImplicitReturns\": true,\n    // \"noImplicitOverride\": true,\n    // \"noUnusedLocals\": true,\n    // \"noUnusedParameters\": true,\n    // \"noFallthroughCasesInSwitch\": true,\n    // \"noPropertyAccessFromIndexSignature\": true,\n\n    // Recommended Options\n    \"strict\": true,\n    \"jsx\": \"react-jsx\",\n    \"verbatimModuleSyntax\": false,\n    \"isolatedModules\": true,\n    \"noUncheckedSideEffectImports\": true,\n    \"moduleDetection\": \"force\",\n    \"skipLibCheck\": true,\n  }\n}\n"
  },
  {
    "path": "typescript/01 intro/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/01 intro/src/index.ts",
    "content": "let message: string = 'Hello world';\nmessage += ' again';\nconsole.log(message);\n"
  },
  {
    "path": "typescript/01 intro/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"es5\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/02 instance/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/02 instance/src/index.ts",
    "content": "let regexp: RegExp = new RegExp('ab+c');\n\nlet array: Array<number> = [1, 2, 3];\n\nlet set: Set<number> = new Set([1, 2, 3]);\n\n/** A first in first out collection */\nclass Queue<T> {\n  private data: Array<T> = [];\n  push(item: T) { this.data.push(item); }\n  pop(): T | undefined { return this.data.shift(); }\n}\n\nlet queue: Queue<number> = new Queue();"
  },
  {
    "path": "typescript/02 instance/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/03 primitive/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/03 primitive/src/index.ts",
    "content": "let isPresent: boolean = false;\nlet magic: number = 66.6;\nlet hello: string = 'world';\n\nlet notDefined: undefined = undefined;\nlet notPresent: null = null;\n\nlet penta: symbol = Symbol('star');\nlet biggy: bigint = 24n;"
  },
  {
    "path": "typescript/03 primitive/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/04 arrays/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/04 arrays/src/index.ts",
    "content": "// Array\nlet array: number[] = [1, 2, 3];\n\n// Usage\narray = [1];\narray = [1, 2, 3, 4, 5];\narray = ['hello']; // Error\n\n// Tuple\nlet tuple: [number, number] = [0, 0];\n\n// Usage\ntuple = [1, 1];\ntuple = [2, 6];\ntuple = [5]; // Error: must be 2 items\ntuple = [5, 4, 3]; // Error: must be 2 items\ntuple = ['elite', 1337]; // Error: must be number"
  },
  {
    "path": "typescript/04 arrays/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/05 objects/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/05 objects/src/index.ts",
    "content": "type Point = { x: number, y: number };\n\nlet center: Point = {\n  x: 0,\n  y: 0,\n};\n\nlet unit: Point = {\n  x: 1,\n  y: 1,\n};"
  },
  {
    "path": "typescript/05 objects/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/06 functions/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/06 functions/src/index.ts",
    "content": "type Add = (a: number, b: number) => number;\n\nlet add: Add;\n\nadd = function (a: number, b: number): number {\n  return a + b;\n};\n\nadd = (a, b) => a + b;"
  },
  {
    "path": "typescript/06 functions/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/07 structural/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/07 structural/src/index.ts",
    "content": "type Point2D = { x: number, y: number };\ntype Point3D = { x: number, y: number, z: number };\n\nlet point2D: Point2D = { x: 0, y: 10 };\nlet point3D: Point3D = { x: 0, y: 10, z: 20 };\n\n/** Extra info ok */\npoint2D = point3D;\nfunction takesPoint2D(point: Point2D) { /** ... */ }\ntakesPoint2D(point3D);\n\n/** Error: missing info */\npoint3D = point2D;\nfunction takesPoint3D(point: Point3D) { /** ... */ }\ntakesPoint3D(point2D);"
  },
  {
    "path": "typescript/07 structural/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/08 classes/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/08 classes/src/index.ts",
    "content": "class Animal {\n  protected name: string;\n\n  constructor(name: string) {\n    this.name = name;\n  }\n\n  public move(distanceInMeters: number): void {\n    console.log(`${this.name} moved ${distanceInMeters}m.`);\n  }\n}\n\nlet cat = new Animal('Cat');\ncat.move(10);\ncat.name = 'Dog';\n\nclass Bird extends Animal {\n  fly(distanceInMeters: number) {\n    console.log(`${this.name} flew ${distanceInMeters}m.`);\n  }\n}\n"
  },
  {
    "path": "typescript/08 classes/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/09 target/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/09 target/src/index.ts",
    "content": "class Animal {\n  private name: string;\n  constructor(name: string) {\n    this.name = name;\n  }\n  move(distanceInMeters: number) {\n    console.log(`${this.name} moved ${distanceInMeters}m.`);\n  }\n}\n"
  },
  {
    "path": "typescript/09 target/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    \"target\": \"ES5\", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \n    \n    \n    \n    \n    \n    \n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/10 generics/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/10 generics/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/10 generics/src/index.ts",
    "content": "/** A FIFO (First In First Out) collection */\nclass Queue<T> {\n  data = [];\n  push(item: T) { this.data.push(item); }\n  pop(): T { return this.data.shift(); }\n}\n\nconst queue = new Queue<number>();\nqueue.push(123);\nqueue.push(456);\n\nconsole.log(queue.pop().toPrecision(1));\nconsole.log(queue.pop().toPrecision(1));"
  },
  {
    "path": "typescript/10 generics/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/11 any and unknown/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/11 any and unknown/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/11 any and unknown/src/examples.ts",
    "content": "function loadString(): any {\n  return 'some string ';\n}\n\nfunction loadNumber(): any {\n  return 123.456;\n}"
  },
  {
    "path": "typescript/11 any and unknown/src/index.ts",
    "content": "function log(value: unknown) {\n  if (typeof value == 'number') {\n    console.log(value.toFixed(2));\n  } else {\n    console.log(value);\n  }\n}\n\nlog(123.456);\nlog('Hello world');"
  },
  {
    "path": "typescript/11 any and unknown/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/12 migration/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/12 migration/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/12 migration/src/examples.ts",
    "content": "function loadString(): any {\n  return 'some string ';\n}\n\nfunction loadNumber(): any {\n  return 123.456;\n}"
  },
  {
    "path": "typescript/12 migration/src/index.ts",
    "content": "function log(value: unknown) {\n  if (typeof value == 'number') {\n    console.log(value.toFixed(2));\n  } else {\n    console.log(value);\n  }\n}\n\nlog(123.456);\nlog('Hello world');"
  },
  {
    "path": "typescript/12 migration/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/13 universal utilities/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/13 universal utilities/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/13 universal utilities/src/examples.ts",
    "content": "function loadString(): any {\n  return 'some string ';\n}\n\nfunction loadNumber(): any {\n  return 123.456;\n}"
  },
  {
    "path": "typescript/13 universal utilities/src/index.ts",
    "content": "function log(value: unknown) {\n  if (typeof value == 'number') {\n    console.log(value.toFixed(2));\n  } else {\n    console.log(value);\n  }\n}\n\nlog(123.456);\nlog('Hello world');"
  },
  {
    "path": "typescript/13 universal utilities/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/14 frontend/README.md",
    "content": "# Getting Started for Frontend Development with React\n\nCreate an application:\n```\nnpx create-react-app example --template typescript\n```\n\nOpen it up:\n```\ncd example\ncode .\n```\n\nStart a live develoment flow: \n```\nnpm start\n```\nPlay around with `src/App.tsx`.\n\nOnce ready to publish run: \n```\nnpm run build\n```\n\nAnd publish the `build` folder to a static host or try it out locally: \n\n```\nnpx serve\n```\n\nHave fun building your amamzing Application with TypeScript 🌹\n"
  },
  {
    "path": "typescript/15 assertion/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/15 assertion/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/15 assertion/src/example.ts",
    "content": "function load(): unknown {\n  return 'Hello World ';\n}"
  },
  {
    "path": "typescript/15 assertion/src/index.ts",
    "content": ""
  },
  {
    "path": "typescript/15 assertion/src/index.tsx",
    "content": "let hello = load();\n\nif (typeof hello === 'string') {\n  const trimmed = hello.trim();\n}\n"
  },
  {
    "path": "typescript/15 assertion/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/16 casting/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/16 casting/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/16 casting/src/example.ts",
    "content": "function load(): unknown {\n  return 'Hello World ';\n}"
  },
  {
    "path": "typescript/16 casting/src/index.ts",
    "content": "let leet;\n\n// Later\nleet = '1337';\n\n// Use as number\nconst number = +leet;\n\nconsole.log(number === 1337); // false\nconsole.log(number); // '1337'"
  },
  {
    "path": "typescript/16 casting/src/index.tsx",
    "content": "let hello = load();\n\nif (typeof hello === 'string') {\n  const trimmed = hello.trim();\n}\n"
  },
  {
    "path": "typescript/16 casting/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/17 modules/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/17 modules/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/17 modules/src/index.ts",
    "content": "import * as utils from './utils';\n\nconsole.log(utils.isPalindrome('madam')); // true\nconsole.log(utils.isPalindrome('madan')); // false"
  },
  {
    "path": "typescript/17 modules/src/utils.ts",
    "content": "/** \n * @returns true if the input string is a palindrome\n */\nexport function isPalindrome(str: string): boolean {\n  return str === str.split('').reverse().join('');\n}\n"
  },
  {
    "path": "typescript/17 modules/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/18 declarations/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/18 declarations/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"build\": \"tsc\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"@types/express\": \"^4.17.8\",\n    \"@types/node\": \"^14.10.0\",\n    \"express\": \"^4.17.1\",\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/18 declarations/src/index.ts",
    "content": "console.log(\n  'Logged in user:',\n  process.env.USER\n);\n\ndeclare const process: any;"
  },
  {
    "path": "typescript/18 declarations/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/20 async await/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/20 async await/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/20 async await/src/better.ts",
    "content": "const delay = (ms: number) => new Promise(res => setTimeout(res, ms));\n\nconst mainAsync = async () => {\n  await delay(1000);\n  console.log('1s');\n  await delay(1000);\n  console.log('2s');\n  await delay(1000);\n  console.log('3s');\n};\n\nmainAsync();"
  },
  {
    "path": "typescript/20 async await/src/index.ts",
    "content": "const main = () => {\n  setTimeout(() => {\n    console.log('1s');\n    setTimeout(() => {\n      console.log('2s');\n      setTimeout(() => {\n        console.log('3s');\n      }, 1000);\n    }, 1000);\n  }, 1000);\n};\n\nmain();"
  },
  {
    "path": "typescript/20 async await/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/21 ts-node/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/21 ts-node/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"ts-node src/index.ts\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"ts-node\": \"^9.0.0\",\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/21 ts-node/src/index.ts",
    "content": "let message: string = 'Hello world';\nconsole.log(message);"
  },
  {
    "path": "typescript/21 ts-node/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/22 const/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/22 const/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/22 const/src/index.ts",
    "content": "type Point = { x: number, y: number };\n\nconst point: Point = { x: 0, y: 0 };\n\npoint = { x: 1, y: 1 }; // Error\n\n// All other behaviours are the same as `let`\npoint.x = 123; \npoint.y = 456;"
  },
  {
    "path": "typescript/22 const/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/23 this/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/23 this/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/23 this/src/index.ts",
    "content": "class Person {\n  private _age: number\n  constructor(_age: number) {\n    this._age = _age;\n  }\n  growOld = () => {\n    this._age++;\n  }\n  age() {\n    return this._age;\n  }\n}\n\nconst person = new Person(0);\n// person.growOld();\nconst growOld = person.growOld;\nsetTimeout(person.growOld, 1000);\ngrowOld();\nsetTimeout(() => console.log('age: ', person.age()), 2000);"
  },
  {
    "path": "typescript/23 this/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/24 readonly/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/24 readonly/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/24 readonly/src/index.ts",
    "content": "class Animal {\n  public readonly name: string;\n  constructor(name: string) {\n    this.name = name;\n  }\n}\n\nconst sheep = new Animal('sheep');\nconsole.log(sheep.name); // Allow\nsheep.name = 'wolf'; // Disallow"
  },
  {
    "path": "typescript/24 readonly/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/25 union/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/25 union/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/25 union/src/index.ts",
    "content": "type Padding =\n  | number\n  | string;\n\n/**\n * Takes a string and adds `padding` to the left.\n * If `padding` is a number, then that number of spaces is added to the left.\n * If `padding` is a string, then `padding` is appended to the left.\n */\nfunction padLeft(value: string, padding: Padding) {\n  if (typeof padding === 'number') {\n    return Array(padding + 1).join(' ') + value;\n  }\n  if (typeof padding === 'string') {\n    return padding + value;\n  }\n  throw new Error(`Expected number or string, got '${padding}'.`);\n}\n\npadLeft('Hello world', 4);     // '    Hello world'\npadLeft('Hello world', '  ');  // '  Hello world'\npadLeft('Hello world', '---'); // '---Hello world'\npadLeft('Hello world', false); // Error"
  },
  {
    "path": "typescript/25 union/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/26 literal/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/26 literal/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/26 literal/src/index.ts",
    "content": "type DiceValue = 1 | 2 | 3 | 4 | 5 | 6;\n\nfunction rollDice() {\n  return (Math.floor(Math.random() * 6) + 1) as DiceValue;\n}\n\nif (rollDice() === 7) {\n  throw new Error('Not possible!');\n}"
  },
  {
    "path": "typescript/26 literal/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/27 narrowing/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/27 narrowing/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/27 narrowing/src/index.ts",
    "content": "type Square = {\n  size: number,\n};\n\ntype Rectangle = {\n  width: number,\n  height: number,\n};\n\ntype Shape = Square | Rectangle;\n\nfunction area(shape: Shape) {\n  if ('size' in shape) {\n    return shape.size * shape.size;\n  }\n  if ('width' in shape) {\n    return shape.width * shape.height;\n  }\n}\n\narea({ size: 2 });             // 4\narea({ width: 2, height: 3 }); // 6"
  },
  {
    "path": "typescript/27 narrowing/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/28 discriminating/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/28 discriminating/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/28 discriminating/src/index.ts",
    "content": "type ValidationSuccess = {\n  isValid: true,\n  validatedValue: string,\n};\n\ntype ValidationFailure = {\n  isValid: false,\n  errorReason: string,\n};\n\ntype ValidationResult =\n  | ValidationSuccess\n  | ValidationFailure;\n\nfunction logResult(result: ValidationResult) {\n  if (result.isValid) {\n    console.log('Success, validated value:', result.validatedValue);\n  }\n  if (result.isValid === false) {\n    console.error('Failure, error reason:', result.errorReason);\n  }\n}"
  },
  {
    "path": "typescript/28 discriminating/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/29 parameter properties/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/29 parameter properties/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/29 parameter properties/src/index.ts",
    "content": "class Person {\n  constructor(\n    public name: string,\n    public age: number\n  ) {\n  }\n}\n\nconst adam = new Person('Adam', 120000);\nconsole.log(adam.name, adam.age); // 'Adam', 120000"
  },
  {
    "path": "typescript/29 parameter properties/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": false,                           /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/30 strict/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/30 strict/false/false.ts",
    "content": "type User = {\n  name: string,\n  age: number,\n};\n\nconst users: User[] = [\n  { name: 'Oby', age: 12 },\n  { name: 'Heera', age: 32 },\n];\n\nfunction getUserAge(name: string): number {\n  const user = users.find(\n    user => user.name === name\n  );\n  return user.age;\n}"
  },
  {
    "path": "typescript/30 strict/false/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": false,\n\n\n\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    // \"outDir\": \"lib\", /* Redirect output structure to the directory. */\n    // \"rootDir\": \"src\", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    \"noEmit\": true, /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n    /* Advanced Options */\n    \"skipLibCheck\": true, /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true /* Disallow inconsistently-cased references to the same file. */\n  }\n}"
  },
  {
    "path": "typescript/30 strict/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/30 strict/src/index.ts",
    "content": "class Person {\n  constructor(\n    public name: string,\n    public age: number\n  ) {\n  }\n}\n\nconst adam = new Person('Adam', 120000);\nconsole.log(adam.name, adam.age); // 'Adam', 120000"
  },
  {
    "path": "typescript/30 strict/true/true.ts",
    "content": "type User = {\n  name: string,\n  age: number,\n};\n\nconst users: User[] = [\n  { name: 'Oby', age: 12 },\n  { name: 'Heera', age: 32 },\n];\n\nfunction getUserAge(name: string): number {\n  const user = users.find(\n    user => user.name === name\n  );\n  if (user == null) {\n    throw new Error(`User not found: ${name}`);\n  }\n  return user.age;\n}"
  },
  {
    "path": "typescript/30 strict/true/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,\n    \n    \n    \n    \n    \n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    // \"outDir\": \"lib\", /* Redirect output structure to the directory. */\n    // \"rootDir\": \"src\", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    \"noEmit\": true, /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,              /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n    /* Advanced Options */\n    \"skipLibCheck\": true, /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true /* Disallow inconsistently-cased references to the same file. */\n  }\n}"
  },
  {
    "path": "typescript/31 null undefined/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/31 null undefined/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/31 null undefined/src/example.ts",
    "content": "\ndeclare function someBooleanOrNullOrUndefined(): boolean | null | undefined;"
  },
  {
    "path": "typescript/31 null undefined/src/index.ts",
    "content": "console.log(null == null);           // true (of course)\nconsole.log(undefined == undefined); // true (of course)\n\nconsole.log(undefined == null);      // true\n\nconsole.log(false == null);          // false\nconsole.log(0 == null);              // false\nconsole.log('' == null);             // false\n\nconst result = someBooleanOrNullOrUndefined();\nif (result == null) {\n  console.log('Null or Undefined', result); // null | undefined\n}\nif (result != null) {\n  console.log('Boolean', result); // true | false\n}"
  },
  {
    "path": "typescript/31 null undefined/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/32 intersection/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/32 intersection/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/32 intersection/src/example.ts",
    "content": "\ndeclare function someBooleanOrNullOrUndefined(): boolean | null | undefined;"
  },
  {
    "path": "typescript/32 intersection/src/index.ts",
    "content": "type Person = {\n  name: string,\n};\n\ntype Email = {\n  email: string,\n};\n\ntype Phone = {\n  phone: string,\n};\n\ntype ContactDetails =\n  & Person\n  & Email\n  & Phone;\n\nfunction contact(details: ContactDetails) {\n  console.log(`Dear ${details.name}. \n  I hope you received our email at ${details.email}.\n  We will call you at ${details.phone} shortly.\n  `);\n}\n"
  },
  {
    "path": "typescript/32 intersection/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/33 optional/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/33 optional/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/33 optional/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/33 optional/src/example.ts",
    "content": "\ndeclare function someBooleanOrNullOrUndefined(): boolean | null | undefined;"
  },
  {
    "path": "typescript/33 optional/src/index.ts",
    "content": "class Point {\n  x?: number;\n  y?: number;\n}\n\nconst point = new Point();\n\nconsole.log(point.x); // undefined"
  },
  {
    "path": "typescript/33 optional/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/34 non-null/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/34 non-null/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/34 non-null/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/34 non-null/src/example.ts",
    "content": "\ndeclare function someBooleanOrNullOrUndefined(): boolean | null | undefined;"
  },
  {
    "path": "typescript/34 non-null/src/index.ts",
    "content": ""
  },
  {
    "path": "typescript/34 non-null/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/35 interface/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/35 interface/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/35 interface/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/35 interface/src/interface.ts",
    "content": "interface Point2D {\n  x: number,\n  y: number,\n}\n\ninterface Point3D extends Point2D {\n  z: number,\n}\n\nexport const point: Point3D = {\n  x: 0,\n  y: 0,\n  z: 0,\n};"
  },
  {
    "path": "typescript/35 interface/src/type.ts",
    "content": "type Point2D = {\n  x: number,\n  y: number,\n};\n\ntype Point3D = Point2D & {\n  z: number,\n};\n\nexport const point: Point3D = {\n  x: 0,\n  y: 0,\n  z: 0,\n};"
  },
  {
    "path": "typescript/35 interface/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/36 declaration merging/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/36 declaration merging/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/36 declaration merging/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/36 declaration merging/src/index.ts",
    "content": "// Express Base\nexport interface Request {\n  body: any;\n}\n\n// Express JSON\nexport interface Request {\n  json: any;\n}\n\n// Our App\nfunction handleRequest(req: Request) {\n  req.body;\n  req.json;\n}"
  },
  {
    "path": "typescript/36 declaration merging/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/37 types vs interfaces/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/37 types vs interfaces/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/37 types vs interfaces/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/37 types vs interfaces/src/interfaces.ts",
    "content": "export interface InputProps {\n  type: 'text' | 'email',\n  value: string,\n  onChange: (newValue: string) => void,\n}"
  },
  {
    "path": "typescript/37 types vs interfaces/src/types.ts",
    "content": "type InputOnChange = (newValue: InputValue) => void;\n\ntype InputValue = string;\n\ntype InputType = 'text' | 'email';\n\nexport type InputProps = {\n  type: InputType,\n  value: InputValue,\n  onChange: InputOnChange,\n};"
  },
  {
    "path": "typescript/37 types vs interfaces/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/38 never/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/38 never/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/38 never/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/38 never/src/index.ts",
    "content": "type Square = {\n  kind: 'square',\n  size: number,\n};\n\ntype Rectangle = {\n  kind: 'rectangle',\n  width: number,\n  height: number,\n};\n\ntype Circle = {\n  kind: 'circle',\n  radius: number,\n};\n\ntype Shape =\n  | Square\n  | Rectangle\n  | Circle;\n\nfunction area(s: Shape) {\n  if (s.kind === 'square') {\n    return s.size * s.size;\n  } else if (s.kind === 'rectangle') {\n    return s.width * s.height;\n  } else if (s.kind === 'circle') {\n    return Math.PI * (s.radius ** 2);\n  } \n  const _ensureAllCasesAreHandled: never = s;\n  return _ensureAllCasesAreHandled;\n}"
  },
  {
    "path": "typescript/38 never/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/39 implements/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/39 implements/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/39 implements/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/39 implements/src/index.ts",
    "content": "type Animal = {\n  name: string,\n  voice(): string,\n};\n\nfunction log(animal: Animal) {\n  console.log(`Animal ${animal.name}: ${animal.voice()}`);\n}\n\nclass Cat implements Animal {\n  constructor(public name: string) { }\n  voice() { return 'meow'; };\n}\n\nclass Dog implements Animal {\n  constructor(public name: string) { }\n  voice() { return 'woof'; };\n}\n\nlog(new Cat('Salem'));\nlog(new Dog('Lassie'));"
  },
  {
    "path": "typescript/39 implements/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/40 definite/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/40 definite/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/40 definite/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/40 definite/src/index.ts",
    "content": "class Point {\n  x!: number;\n  y!: number;\n  constructor() {\n    this.moveRandom();\n  }\n  moveRandom() {\n    this.x = Math.random();\n    this.y = Math.random();\n  }\n}"
  },
  {
    "path": "typescript/40 definite/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/41 type guard/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/41 type guard/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/41 type guard/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/41 type guard/src/index.ts",
    "content": "type Square = {\n  size: number,\n};\ntype Rectangle = {\n  width: number,\n  height: number,\n};\ntype Shape = Square | Rectangle;\n\nfunction isSquare(shape: Shape): shape is Square {\n\treturn 'size' in shape;\n}\n\nfunction isRectangle(shape: Shape): shape is Rectangle {\n\treturn 'width' in shape;\n}\n\nfunction area(shape: Shape) {\n  if (isSquare(shape)) {\n    return shape.size * shape.size;\n  }\n  if (isRectangle(shape)) {\n    return shape.width * shape.height;\n  }\n  const _ensure: never = shape;\n  return _ensure;\n}"
  },
  {
    "path": "typescript/41 type guard/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/42 assert/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/42 assert/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/42 assert/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/42 assert/src/example.ts",
    "content": "function loadPerson(): Person | null {\n  return null;\n}"
  },
  {
    "path": "typescript/42 assert/src/index.ts",
    "content": "type Person = {\n  name: string,\n  dateOfBirth?: Date,\n};\n\nfunction assert(condition: unknown, message: string): asserts condition {\n  if (!condition) throw new Error(message);\n}\n\nfunction assertDate(value: unknown): asserts value is Date {\n  if (value instanceof Date) return;\n  else throw new TypeError('value is not a Date');\n}\n\nconst maybePerson = loadPerson();\n\nassert(maybePerson != null, 'Could not load person');\nconsole.log('Name:', maybePerson.name);\n\nassertDate(maybePerson.dateOfBirth);\nconsole.log('Date Of Birth:', maybePerson.dateOfBirth.toISOString());"
  },
  {
    "path": "typescript/42 assert/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/43 overloads/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/43 overloads/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/43 overloads/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/43 overloads/src/example.ts",
    "content": "function loadPerson(): Person | null {\n  return null;\n}"
  },
  {
    "path": "typescript/43 overloads/src/index.ts",
    "content": "function makeDate(timestamp: number): Date;\nfunction makeDate(year: number, month: number, day: number): Date;\nfunction makeDate(timestampOrYear: number, month?: number, day?: number): Date {\n  if (month != null && day != null) {\n    return new Date(timestampOrYear, month - 1, day);\n  } else {\n    return new Date(timestampOrYear);\n  }\n}\n\nconst doomsday = makeDate(2000, 1, 1); // 1 Jan 2000\nconst epoch = makeDate(0); // 1 Jun 1970"
  },
  {
    "path": "typescript/43 overloads/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/44 call signature/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/44 call signature/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/44 call signature/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/44 call signature/src/example.ts",
    "content": "function loadPerson(): Person | null {\n  return null;\n}"
  },
  {
    "path": "typescript/44 call signature/src/index.ts",
    "content": ""
  },
  {
    "path": "typescript/44 call signature/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/45 abstract/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/45 abstract/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/45 abstract/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/45 abstract/src/example.ts",
    "content": ""
  },
  {
    "path": "typescript/45 abstract/src/index.ts",
    "content": ""
  },
  {
    "path": "typescript/45 abstract/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/46 index/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/46 index/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/46 index/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/46 index/src/example.ts",
    "content": "namespace final {\n  type Person = {\n    displayName: string,\n    email: string,\n  };\n\n  type PersonDictionary = {\n    [username: string]: Person | undefined,\n  };\n\n  const persons: PersonDictionary = {\n    // jane: { displayName: 'Jane Doe', email: 'jane@example.com' },\n  };\n\n  persons['john'] = { displayName: 'John Doe', email: 'john@example.com' };\n\n  console.log(persons['john']);\n\n  delete persons['john'];\n\n  const result = persons['missing'];\n  console.log(result, result.email); // undefined, Error\n\n  persons['john'] = { displayName: 'John Doe', emale: 'john@example.com' }; // Error\n}"
  },
  {
    "path": "typescript/46 index/src/index.ts",
    "content": "type Person = {\n  displayName: string,\n  email: string,\n};\n\ntype PersonDictionary = {\n  [username: string]: Person,\n};\n\nconst persons: PersonDictionary = {\n  // jane: { displayName: 'Jane Doe', email: 'jane@example.com' },\n};\n\npersons['john'] = { displayName: 'John Doe', email: 'john@example.com' };\n\nconsole.log(persons['john']);\n\ndelete persons['john'];"
  },
  {
    "path": "typescript/46 index/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n  \n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  // \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/47 readonly array/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/47 readonly array/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/47 readonly array/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/47 readonly array/src/example.ts",
    "content": "namespace final {\n  type Person = {\n    displayName: string,\n    email: string,\n  };\n\n  type PersonDictionary = {\n    [username: string]: Person | undefined,\n  };\n\n  const persons: PersonDictionary = {\n    // jane: { displayName: 'Jane Doe', email: 'jane@example.com' },\n  };\n\n  persons['john'] = { displayName: 'John Doe', email: 'john@example.com' };\n\n  console.log(persons['john']);\n\n  delete persons['john'];\n\n  const result = persons['missing'];\n  console.log(result, result.email); // undefined, Error\n\n  persons['john'] = { displayName: 'John Doe', emale: 'john@example.com' }; // Error\n}"
  },
  {
    "path": "typescript/47 readonly array/src/index.ts",
    "content": ""
  },
  {
    "path": "typescript/47 readonly array/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": false,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/48 double assertion/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/48 double assertion/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/48 double assertion/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/48 double assertion/src/example.ts",
    "content": "namespace final {\n  type Person = {\n    displayName: string,\n    email: string,\n  };\n\n  type PersonDictionary = {\n    [username: string]: Person | undefined,\n  };\n\n  const persons: PersonDictionary = {\n    // jane: { displayName: 'Jane Doe', email: 'jane@example.com' },\n  };\n\n  persons['john'] = { displayName: 'John Doe', email: 'john@example.com' };\n\n  console.log(persons['john']);\n\n  delete persons['john'];\n\n  const result = persons['missing'];\n  console.log(result, result.email); // undefined, Error\n\n  persons['john'] = { displayName: 'John Doe', emale: 'john@example.com' }; // Error\n}"
  },
  {
    "path": "typescript/48 double assertion/src/index.ts",
    "content": "type Point2D = { x: number, y: number };\ntype Point3D = { x: number, y: number, z: number };\ntype Person = { name: string, email: string };\n\nlet point2: Point2D = { x: 0, y: 0 };\nlet point3: Point3D = { x: 10, y: 10, z: 10 };\nlet person: Person = { name: 'john', email: 'john@example.com' };\n\npoint2 = point3;\npoint3 = point2; // Error\npoint3 = point2 as Point3D; // Ok: I trust you\n\nperson = point3; // Error\npoint3 = person; // Error\npoint3 = person as Point3D; // Error: I don't trust you enough\npoint3 = person as unknown as Point3D; // Ok: I doubly trust you"
  },
  {
    "path": "typescript/48 double assertion/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": false,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/49 this/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/49 this/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/49 this/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/49 this/src/example.ts",
    "content": "namespace final {\n  type Person = {\n    displayName: string,\n    email: string,\n  };\n\n  type PersonDictionary = {\n    [username: string]: Person | undefined,\n  };\n\n  const persons: PersonDictionary = {\n    // jane: { displayName: 'Jane Doe', email: 'jane@example.com' },\n  };\n\n  persons['john'] = { displayName: 'John Doe', email: 'john@example.com' };\n\n  console.log(persons['john']);\n\n  delete persons['john'];\n\n  const result = persons['missing'];\n  console.log(result, result.email); // undefined, Error\n\n  persons['john'] = { displayName: 'John Doe', emale: 'john@example.com' }; // Error\n}"
  },
  {
    "path": "typescript/49 this/src/index.ts",
    "content": "function double(this: { value: number }) {\n  this.value = this.value * 2;\n}\n\nconst valid = {\n  value: 10,\n  double,\n};\n\nvalid.double();\n\nconsole.log(valid.value); // 20\n\nconst invalid = {\n  value: 10,\n  double,\n};\n\ninvalid.double(); // Error"
  },
  {
    "path": "typescript/49 this/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": false,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/50 generic constraint/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/50 generic constraint/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/50 generic constraint/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/50 generic constraint/src/index.ts",
    "content": "type NameFields = { firstName: string, lastName: string };\n\nfunction addFullName<T extends NameFields>(obj: T): T & { fullName: string } {\n  return {\n    ...obj,\n    fullName: `${obj.firstName} ${obj.lastName}`,\n  };\n}\n\nconst john = addFullName({\n  email: 'john@example.com',\n  firstName: 'John',\n  lastName: 'Doe'\n});\n\nconsole.log(john.email); // john@example.com\nconsole.log(john.fullName); // John Doe\n\nconst jane = addFullName({ firstName: 'Jane', lastName: 'Austen' });"
  },
  {
    "path": "typescript/50 generic constraint/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": false,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/51 typeof/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/51 typeof/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/51 typeof/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/51 typeof/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/51 typeof/src/index.ts",
    "content": "const personResponse = {\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n};\n\ntype PersonResponse = typeof personResponse;\n\nfunction processResponse(person: PersonResponse) {\n  console.log('Full name:', `${person.firstName} ${person.lastName}`);\n}"
  },
  {
    "path": "typescript/51 typeof/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/52 lookup/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/52 lookup/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/52 lookup/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/52 lookup/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/52 lookup/src/index.ts",
    "content": "export type SubmitRequest = {\n  transactionId: string,\n  personal: {\n    title: string,\n    driverFirstName: string,\n    driverMiddleName: string,\n    driverLastName: string,\n    email: string,\n    phone: string,\n    previousAliases: {\n      firstName: string,\n      middleName: string,\n      lastName: string,\n    }[],\n    gender: string,\n    dob: string,\n    birthCountry: string,\n  },\n  driver: {\n    licenceNumber: string,\n    expiryDate: string,\n    hasLicenceForMin6Months: boolean,\n    hasTerritoryLicence: boolean,\n    territoryLicenceStates?: string[],\n    hasDriverAccreditation: boolean,\n    driverAccreditationNumber?: string,\n    vehicleClasses: string[],\n    tandc: true,\n  },\n  consent: {\n    understandInformation: boolean,\n    informationTrue: boolean,\n    informationConsidered: boolean,\n    medicalVicRoadsPoliceCheckConsent: boolean,\n    consentToDisclosing: boolean,\n    indemnifyAgainstLiability: boolean,\n    acicCheckConsent: boolean,\n    childrenCheckConsent: boolean,\n    personalInfoCheckConsent: boolean,\n    trafficOffences: boolean,\n    assessAcicCheckConsent: boolean,\n    criminalOffences: boolean,\n    licenceCancelledSuspended: boolean,\n    sexOffendersReporting: boolean,\n    ausWorkRights: boolean,\n    additionalInformation: string,\n  },\n  payment: {\n    creditCardToken: string,\n  }\n};\n\n// UI\ntype PaymentRequest = SubmitRequest['payment'];\ntype PreviousAliasRequest = SubmitRequest['personal']['previousAliases'][0];\n\nexport function getPayment(): PaymentRequest {\n  return {\n    creditCardToken: '124q234n12l!@#$3412n34!@#$'\n  }\n}"
  },
  {
    "path": "typescript/52 lookup/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/53 keyof/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/53 keyof/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/53 keyof/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/53 keyof/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/53 keyof/src/index.ts",
    "content": "type Person = {\n  name: string,\n  age: number,\n  location: string,\n};\n\nconst john: Person = {\n  name: 'John',\n  age: 35,\n  location: 'Melbourne',\n};\n\nfunction logGet<Obj, Key extends keyof Obj>(obj: Obj, key: Key) {\n  const value = obj[key];\n  console.log('Getting:', key, value);\n  return value;\n}\n\nconst age = logGet(john, 'age'); // 35\nconsole.log(logGet(john, 'email')); // Error"
  },
  {
    "path": "typescript/53 keyof/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/54 conditional/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/54 conditional/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/54 conditional/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/54 conditional/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/54 conditional/src/index.ts",
    "content": "export type TypeName<T> =\n  T extends string ? 'string' :\n  T extends number ? 'number' :\n  T extends boolean ? 'boolean' :\n  T extends undefined ? 'undefined' :\n  T extends symbol ? 'symbol' :\n  T extends bigint ? 'bigint' :\n  T extends Function ? 'function' :\n  'object';\n\nfunction typeName<T>(t: T): TypeName<T> {\n  return typeof t as TypeName<T>;\n}\n\nconst str = typeName('hello world');\nconst num = typeName(123);\nconst bool = typeName(true);\nconst undef = typeName(undefined);\nconst sym = typeName(Symbol('star'));\nconst big = typeName(24n);\nconst func = typeName(function () { });\nconst obj = typeName(null);"
  },
  {
    "path": "typescript/54 conditional/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/55 infer/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/55 infer/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/55 infer/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/55 infer/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/55 infer/src/index.ts",
    "content": "export function createPerson(firstName: string, lastName: string) {\n  return {\n    firstName,\n    lastName,\n  };\n}\n\nfunction logPerson(person: ReturnType<typeof createPerson>) {\n  console.log(\n    'Person:',\n    person.firstName,\n    person.lastName,\n  );\n}"
  },
  {
    "path": "typescript/55 infer/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/56 mapped/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/56 mapped/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/56 mapped/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/56 mapped/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/56 mapped/src/index.ts",
    "content": "export type Point = {\n  x: number,\n  y: number,\n  z: number,\n};\n\nconst center: Readonly<Point> = {\n  x: 0,\n  y: 0,\n  z: 0,\n};"
  },
  {
    "path": "typescript/56 mapped/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/57 mapped type modifiers/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/57 mapped type modifiers/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/57 mapped type modifiers/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/57 mapped type modifiers/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/57 mapped type modifiers/src/index.ts",
    "content": "export class State<T> {\n  constructor(public current: T) { }\n  update(next: Partial<T>) {\n    this.current = { ...this.current, ...next };\n  }\n}\n\nconst state = new State({ x: 0, y: 0 });\nstate.update({ y: 123 });\nconsole.log(state.current); // { x: 0, y: 123 }"
  },
  {
    "path": "typescript/57 mapped type modifiers/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/58 as const/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/58 as const/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/58 as const/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.0.2\"\n  }\n}\n"
  },
  {
    "path": "typescript/58 as const/src/example.json",
    "content": "{\n  \"name\": \"john\",\n  \"email\": \"john@example.com\",\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\"\n}"
  },
  {
    "path": "typescript/58 as const/src/index.ts",
    "content": "function layout(settings: {\n  align: 'left' | 'center' | 'right',\n  padding: number,\n}) {\n  console.log('Performing layout:', settings);\n}\n\nconst example = {\n  align: 'left',\n  padding: 0,\n};\n\nlayout(example);"
  },
  {
    "path": "typescript/58 as const/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Strict Type-Checking Options */\n    \"strict\": true,                          /* Enable all strict type-checking options. */\n    \"strictNullChecks\": true,                /* Enable strict null checks. */\n    \"noImplicitThis\": true,                /* Raise error on 'this' expressions with an implied 'any' type. */\n  \n  \n  \n  // \"noImplicitAny\": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */\n  // \"strictFunctionTypes\": true,           /* Enable strict checking of function types. */\n  // \"strictBindCallApply\": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n  // \"strictPropertyInitialization\": true,  /* Enable strict checking of property initialization in classes. */\n  \n  // \"alwaysStrict\": true,                  /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Basic Options */\n    // \"incremental\": true,                   /* Enable incremental compilation */\n    \"target\": \"esnext\",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                             /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                       /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                       /* Report errors in .js files. */\n    \"jsx\": \"react\",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */\n    // \"declaration\": true,                   /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                     /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                       /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                          /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                         /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                     /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",               /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                /* Do not emit comments to output. */\n    // \"noEmit\": true,                        /* Do not emit outputs. */\n    // \"importHelpers\": true,                 /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,            /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,             /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,    /* Report errors for fallthrough cases in switch statement. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                       /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                       /* List of folders to include type definitions from. */\n    // \"types\": [],                           /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,              /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,          /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                         /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,               /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,        /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,         /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                     /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true  /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/59 override/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/59 override/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/59 override/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.3.0-beta\"\n  }\n}\n"
  },
  {
    "path": "typescript/59 override/src/another.ts",
    "content": "export class Disposible {\n  isDisposed = false;\n  dispose() {\n    this.isDisposed = true;\n    this.log('disposed');\n  }\n  log(message: string) {\n    console.log(message);\n  }\n}\n\nexport class File extends Disposible {\n  write(contents: string) {\n    // ... write to file\n  }\n}"
  },
  {
    "path": "typescript/59 override/src/index.ts",
    "content": "class Visibility {\n  visible = true;\n  setVisible(visible: boolean) {\n   this.visible = visible;\n  }\n}\nclass MockVisibility extends Visibility {\n  override setVisible(visible: boolean) {\n   console.log(visible ? 'Shown' : 'Hidden');\n }\n}\n// app code\nconst real = new Visibility();\nreal.setVisible(true);\nreal.setVisible(false);\n// test code\nconst mock = new MockVisibility();\nmock.setVisible(true);\nmock.setVisible(false);"
  },
  {
    "path": "typescript/59 override/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Ensure overriding members are marked with an 'override' modifier */\n    \"noImplicitOverride\": true,\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"es5\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                                 /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/60 pick/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/60 pick/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/60 pick/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.3.0-beta\"\n  }\n}\n"
  },
  {
    "path": "typescript/60 pick/src/index.ts",
    "content": "// All the CSSProperties\ntype CSSProperties = {\n  color?: string,\n  backgroundColor?: string,\n  width?: number,\n  height?: number,\n  // ... lots more\n};\n\nfunction setSize(\n  element: HTMLElement,\n  // Usage: Just need the size properties\n  size: Pick<CSSProperties, 'width' | 'height'>\n) {\n  element.setAttribute('width', (size.width ?? 0) + 'px');\n  element.setAttribute('height', (size.height ?? 0) + 'px');\n}"
  },
  {
    "path": "typescript/60 pick/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Ensure overriding members are marked with an 'override' modifier */\n    \"noImplicitOverride\": true,\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"es5\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                                 /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/61 object/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/61 object/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/61 object/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.3.0-beta\"\n  }\n}\n"
  },
  {
    "path": "typescript/61 object/src/index.ts",
    "content": "let car = { company: 'ford', model: 'mustang' };\nlet person = { name: 'John', age: 23 };\n\nconst objectToValue = new WeakMap();\nobjectToValue.set(car, 50000);\nobjectToValue.set(person, Infinity);\n\nobjectToValue.set(456, 123);"
  },
  {
    "path": "typescript/61 object/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Visit https://aka.ms/tsconfig.json to read more about this file */\n\n    /* Ensure overriding members are marked with an 'override' modifier */\n    \"noImplicitOverride\": true,\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    \"strict\": true,                                 /* Enable all strict type-checking options. */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/62 noUncheckedIndexAccess/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/62 noUncheckedIndexAccess/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/62 noUncheckedIndexAccess/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.3.0-beta\"\n  }\n}\n"
  },
  {
    "path": "typescript/62 noUncheckedIndexAccess/src/index.ts",
    "content": "const nums = [0, 1, 2];\n\nif (nums[3] != null) {\n  const example: number = nums[3];  // Not okay!\n  console.log(example.toFixed(2)); // Error at runtime\n}\n\nfor (const num of nums) {\n  console.log(num.toFixed(2));\n}\n\nnums.forEach(num => console.log(num.toFixed(2)));\n\nconst trusted = [0, 1, 2];\nconsole.log(trusted[2]?.toFixed(2));"
  },
  {
    "path": "typescript/62 noUncheckedIndexAccess/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/63 satisfies/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/63 satisfies/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/63 satisfies/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/63 satisfies/src/index.ts",
    "content": "type Color = ColorString | ColorRGB;\ntype ColorString = 'red' | 'blue' | 'yellow' | 'purple';\ntype ColorRGB = [red: number, green: number, blue: number];\n\ntype Theme = Record<string, Color>;\n\nconst theme = {\n  primary: 'red',\n  secondary: [0, 255, 0],\n  tertiary: 'purple',\n} satisfies Theme;\n\nconst [r, g, b] = theme.secondary;"
  },
  {
    "path": "typescript/63 satisfies/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/64 PropertyKey/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/64 PropertyKey/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/64 PropertyKey/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/64 PropertyKey/src/index.ts",
    "content": "const str: string = 'key';\nconst num: number = 1337;\nconst sym: symbol = Symbol();\n\nconst valid = {\n  [str]: 'valid',\n  [num]: 'valid',\n  [sym]: 'valid',\n};\n\nconst obj = {};\n\nconst invalid = {\n  [obj]: 'invalid',\n};\n\nlet example: PropertyKey;\nexample = str;\nexample = num;\nexample = sym;\nexample = obj;"
  },
  {
    "path": "typescript/64 PropertyKey/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    \"outDir\": \"lib\",                              /* Redirect output structure to the directory. */\n    \"rootDir\": \"src\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  },\n  \"include\": [\"src\"],\n  \"exclude\": [\"node_modules\", \"lib\"]\n}\n"
  },
  {
    "path": "typescript/65 thisType/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/65 thisType/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/65 thisType/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/65 thisType/src/index.ts",
    "content": "type StateDescription<D, M> = {\n  data: D;\n  methods: M & ThisType<D & M>;\n};\n\nfunction createState<D, M>(desc: StateDescription<D, M>): D & M {\n  return { ...desc.data, ...desc.methods };\n}\n\nlet state = createState({\n  data: { x: 0, y: 0 },\n  methods: {\n    moveBy(dx: number, dy: number) {\n      this.x += dx;\n      this.y += dy;\n    },\n  },\n});\n\nstate.x = 10;\nstate.y = 20;\nstate.moveBy(5, 5);"
  },
  {
    "path": "typescript/65 thisType/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/66 Awaited/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/66 Awaited/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/66 Awaited/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/66 Awaited/src/index.ts",
    "content": "async function example<T>(input: T) {\n  const output: Awaited<T> = await input;\n}"
  },
  {
    "path": "typescript/66 Awaited/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/67 intrinsic string/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/67 intrinsic string/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/67 intrinsic string/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/67 intrinsic string/src/index.ts",
    "content": "type Getter<T extends string> = `get${Capitalize<T>}`;\ntype Setter<T extends string> = `set${Capitalize<T>}`;\n\ntype Name = 'name';\n\ntype GetName = Getter<Name>;\ntype SetName = Setter<Name>;"
  },
  {
    "path": "typescript/67 intrinsic string/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/68 mapped type as clause/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/68 mapped type as clause/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/68 mapped type as clause/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/68 mapped type as clause/src/index.ts",
    "content": "type Getter<T extends string> = `get${Capitalize<T>}`;\ntype Setter<T extends string> = `set${Capitalize<T>}`;\n\ntype Name = 'name';\n\ntype GetName = Getter<Name>;\ntype SetName = Setter<Name>;"
  },
  {
    "path": "typescript/68 mapped type as clause/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/69 union vs intersection venn diagrams/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/69 union vs intersection venn diagrams/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/69 union vs intersection venn diagrams/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/69 union vs intersection venn diagrams/src/index.ts",
    "content": "export type Name = { name: string };\nexport type Age = { age: number };\n\ntype Union = Name | Age | (Name & Age);\n\nlet union: Union;\nunion = { name: 'Jane' };\nunion = { age: 29 }\nunion = { name: 'Jane', age: 29 };\n\nfunction filter(union: Union) {\n  if ('name' in union) { // Name\n    union.name; // string\n  }\n\n  if ('age' in union) { // Age\n    union.age; // number\n  }\n\n  if ('name' in union && 'age' in union) { // Name & Age\n    union.name;\n    union.age;\n  }\n}"
  },
  {
    "path": "typescript/69 union vs intersection venn diagrams/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  },
  {
    "path": "typescript/70 enums are bad/.vscode/extensions.json",
    "content": "{\n\t// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.\n\t// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp\n\n\t// List of extensions which should be recommended for users of this workspace.\n\t\"recommendations\": [\n\t\t\n\t],\n\t// List of extensions recommended by VS Code that should not be recommended for users of this workspace.\n\t\"unwantedRecommendations\": [\n\t\t\n\t]\n}"
  },
  {
    "path": "typescript/70 enums are bad/.vscode/settings.json",
    "content": "{\n    \"typescript.tsdk\": \"node_modules/typescript/lib\"\n}"
  },
  {
    "path": "typescript/70 enums are bad/package.json",
    "content": "{\n  \"name\": \"intro\",\n  \"version\": \"1.0.0\",\n  \"description\": \"\",\n  \"main\": \"index.js\",\n  \"scripts\": {\n    \"start\": \"tsc --watch\"\n  },\n  \"keywords\": [],\n  \"author\": \"\",\n  \"license\": \"ISC\",\n  \"dependencies\": {\n    \"typescript\": \"^4.9.0-dev.20220925\"\n  }\n}\n"
  },
  {
    "path": "typescript/70 enums are bad/src/app.ts",
    "content": "// import { initiateLogin } from './initiateLogin';\n// import { LoginMode } from './index';\n\n// initiateLogin('app'); // Error\n// initiateLogin(LoginMode.app);"
  },
  {
    "path": "typescript/70 enums are bad/src/index.ts",
    "content": "export const LoginMode = {\n  device: 'device',\n  email: 'email',\n  social: 'social',\n} as const;\n\nexport type LoginMode = keyof typeof LoginMode;\n\nexport function initiateLogin(mode: LoginMode) {\n  // ... \n}\n\ninitiateLogin('device');\n\ninitiateLogin(LoginMode.device);\n\nObject.keys(LoginMode); // ['device', 'email', 'social']"
  },
  {
    "path": "typescript/70 enums are bad/src/initiateLogin.ts",
    "content": "// import { LoginMode } from './index';\n\n// export function initiateLogin(mode: LoginMode) {\n//   // ...\n// }"
  },
  {
    "path": "typescript/70 enums are bad/tsconfig.json",
    "content": "{\n  \"compilerOptions\": {\n    /* Enable all strict type-checking options. */\n    \"strict\": true,\n    \"noUncheckedIndexedAccess\": true,\n\n\n\n\n\n\n\n    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n    /* Basic Options */\n    // \"incremental\": true,                         /* Enable incremental compilation */\n    \"target\": \"esnext\",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */\n    \"module\": \"commonjs\",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */\n    // \"lib\": [],                                   /* Specify library files to be included in the compilation. */\n    // \"allowJs\": true,                             /* Allow javascript files to be compiled. */\n    // \"checkJs\": true,                             /* Report errors in .js files. */\n    // \"jsx\": \"preserve\",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */\n    // \"declaration\": true,                         /* Generates corresponding '.d.ts' file. */\n    // \"declarationMap\": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */\n    // \"sourceMap\": true,                           /* Generates corresponding '.map' file. */\n    // \"outFile\": \"./\",                             /* Concatenate and emit output to single file. */\n    // \"outDir\": \"./\",                              /* Redirect output structure to the directory. */\n    // \"rootDir\": \"./\",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */\n    // \"composite\": true,                           /* Enable project compilation */\n    // \"tsBuildInfoFile\": \"./\",                     /* Specify file to store incremental compilation information */\n    // \"removeComments\": true,                      /* Do not emit comments to output. */\n    // \"noEmit\": true,                              /* Do not emit outputs. */\n    // \"importHelpers\": true,                       /* Import emit helpers from 'tslib'. */\n    // \"downlevelIteration\": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */\n    // \"isolatedModules\": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */\n\n    /* Strict Type-Checking Options */\n    // \"noImplicitAny\": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */\n    // \"strictNullChecks\": true,                    /* Enable strict null checks. */\n    // \"strictFunctionTypes\": true,                 /* Enable strict checking of function types. */\n    // \"strictBindCallApply\": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */\n    // \"strictPropertyInitialization\": true,        /* Enable strict checking of property initialization in classes. */\n    // \"noImplicitThis\": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */\n    // \"alwaysStrict\": true,                        /* Parse in strict mode and emit \"use strict\" for each source file. */\n\n    /* Additional Checks */\n    // \"noUnusedLocals\": true,                      /* Report errors on unused locals. */\n    // \"noUnusedParameters\": true,                  /* Report errors on unused parameters. */\n    // \"noImplicitReturns\": true,                   /* Report error when not all code paths in function return a value. */\n    // \"noFallthroughCasesInSwitch\": true,          /* Report errors for fallthrough cases in switch statement. */\n    // \"noUncheckedIndexedAccess\": true,            /* Include 'undefined' in index signature results */\n    // \"noPropertyAccessFromIndexSignature\": true,  /* Require undeclared properties from index signatures to use element accesses. */\n\n    /* Module Resolution Options */\n    // \"moduleResolution\": \"node\",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */\n    // \"baseUrl\": \"./\",                             /* Base directory to resolve non-absolute module names. */\n    // \"paths\": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */\n    // \"rootDirs\": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */\n    // \"typeRoots\": [],                             /* List of folders to include type definitions from. */\n    // \"types\": [],                                 /* Type declaration files to be included in compilation. */\n    // \"allowSyntheticDefaultImports\": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */\n    \"esModuleInterop\": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */\n    // \"preserveSymlinks\": true,                    /* Do not resolve the real path of symlinks. */\n    // \"allowUmdGlobalAccess\": true,                /* Allow accessing UMD globals from modules. */\n\n    /* Source Map Options */\n    // \"sourceRoot\": \"\",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */\n    // \"mapRoot\": \"\",                               /* Specify the location where debugger should locate map files instead of generated locations. */\n    // \"inlineSourceMap\": true,                     /* Emit a single file with source maps instead of having a separate file. */\n    // \"inlineSources\": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */\n\n    /* Experimental Options */\n    // \"experimentalDecorators\": true,              /* Enables experimental support for ES7 decorators. */\n    // \"emitDecoratorMetadata\": true,               /* Enables experimental support for emitting type metadata for decorators. */\n\n    /* Advanced Options */\n    \"skipLibCheck\": true,                           /* Skip type checking of declaration files. */\n    \"forceConsistentCasingInFileNames\": true        /* Disallow inconsistently-cased references to the same file. */\n  }\n}\n"
  }
]