[ { "path": ".gitignore", "content": "node_modules\n*.js\n*.log\n*.d.ts\n!global.d.ts\n" }, { "path": ".npmignore", "content": "node_modules\n*.log\n" }, { "path": "CODE_OF_CONDUCT.md", "content": "This project is governed by [Lyft's code of conduct](https://github.com/lyft/code-of-conduct). All contributors and participants agree to abide by its terms.\n" }, { "path": "CaptureChunks.tsx", "content": "/// \n\nimport * as React from 'react';\n\nexport interface CaptureChunksProps {\n /** Output of webpack stats when \"chunks\" filed is enabled */\n statsChunks: Array<{\n id: string;\n modules: Array<{\n name: string;\n id: string;\n }>;\n }>;\n /** Pass an empty array to get required chunks pushed to it */\n additionalChunks: Array;\n}\n\n/**\n * Capture additional chunks required to render the children.\n * This works with the SyncImportServer TypeScript transformer and UniversalLazyComponent components\n */\nexport const CaptureChunks: React.StatelessComponent =\n({ statsChunks, additionalChunks, children }) => {\n if (typeof global !== 'undefined') {\n global.__webpack_report_dynamic_module__ = (moduleId) => {\n statsChunks.forEach(chunk => {\n chunk.modules.forEach(module => {\n if (module.id === moduleId) {\n additionalChunks.push(chunk.id);\n }\n });\n });\n }\n }\n return React.Children.only(children);\n}\n" }, { "path": "LICENSE.md", "content": "\n Apache License\n Version 2.0, January 2004\n http://www.apache.org/licenses/\n\n TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION\n\n 1. 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We also recommend that a\n file or class name and description of purpose be included on the\n same \"printed page\" as the copyright notice for easier\n identification within third-party archives.\n\n Copyright 2017 Lyft, Inc.\n\n Licensed under the Apache License, Version 2.0 (the \"License\");\n you may not use this file except in compliance with the License.\n You may obtain a copy of the License at\n\n http://www.apache.org/licenses/LICENSE-2.0\n\n Unless required by applicable law or agreed to in writing, software\n distributed under the License is distributed on an \"AS IS\" BASIS,\n WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n See the License for the specific language governing permissions and\n limitations under the License.\n" }, { "path": "NOTICE", "content": "universal-async-component\nCopyright 2016-2017 Lyft Inc.\n\nThis product includes software developed at Lyft Inc.\n" }, { "path": "README.md", "content": "# Universal Async Component\n\nAsync component that works in server and client. It will allows code splitting that works for universal apps.\n\n## What is this?\nThis is solving the [hard problem](https://github.com/ReactTraining/react-router/blob/d64ed0150b41df02b083f090b6682261c819a91e/packages/react-router-dom/docs/guides/code-splitting.md#code-splitting--server-rendering) of mixing code splitting and server side rendering. To avoid \"flash of contents\" in the initial page load server must include dynamic chunks required to render that screen in the HTML response. Using this library and adding corresponding components to your build system you can achieve that.\n\n\n## Example project\nSee the [**example repo**](https://github.com/mohsen1/universal-async-component-example)\n\n## Usage\n\n```js\nimport { getComponentAsync } from 'universal-async-component';\n\nconst AsyncHelloWorld = getComponentAsync({ loader: () => import('./hello') });\n\nconst App = () => \n```\n\n## Server side rendering\n\nTo make server-side rendering work you should update your server code to collect additional required chunks and also update your Webpack config to replace `import()` calls with something special that makes all of this work.\n\n### 1. Add `CaptureChunks`\nWrap you app with `CaptureChunks` in your server renderer. You need to provide Webpack client side stats to it. Also, pass an empty array\n\n```jsx\nconst additionalChunks = [];\nvar htmlString = ReactDOM.renderToString(\n \n \n \n);\n```\nAfter above code is run, `additionalChunks` is populated with all chunkIds that is required to render current `App`.\n\nUse Webpack [`StatsPlugin`](https://www.npmjs.com/package/webpack-stats-plugin) you can write the stats to disk:\n\n```js\nnew StatsPlugin({\n filename: 'client-stats.json',\n fields: ['chunks', 'publicPath', 'assets'],\n})\n```\n\n### 2. Use `additionalChunks`\nUse `additionalChunks` retrieved from `CaptureChunks` to append required chunks\n\n```js\nres.send(`\n\n \n
${htmlString}
\n \n ${additionalChunks.map(chunkId => ``)}\n \n \n\n`)\n```\nNote that additional chunks must come before the main bundle and after Webpack bootstrap script. It's easy to extract out Webpack bootstrap by using `CommonsChunkPlugin` plugin:\n\n```js\nnew webpack.optimize.CommonsChunkPlugin({\n names: ['bootstrap'],\n filename: 'webpack-bootstrap.js',\n minChunks: Infinity\n}),\n```\n\n### 3. Add `\"string-replace-loader\"`\nAdd `\"string-replace-loader\"` before any of other loaders in your **client and server** Webpack config and require options from `\"universal-async-component\"`:\n\n```js\nconst { stringReplaceLoaderOptions } = require('universal-async-component');\nconst config = {\n rules: [\n test: /\\.jsx?/,\n use: {\n loader: \"string-replace-loader\",\n options: stringReplaceLoaderOptions,\n },\n ],\n}\n```\nNote: this will go away once React can render async components\n\n\n\n\n" }, { "path": "getComponentAsync.tsx", "content": "import * as React from 'react';\n\nexport type ModuleNamespace = any; // TODO\n\n/** Props passed to the loading component */\nexport interface LoadingProps {\n isLoading: boolean;\n error: any;\n timedOut: boolean;\n}\n\nexport interface GetComponentAsyncConfiguration {\n /** A function that returns promise of a module namespace or a module namespace */\n loader: () => Promise & { resolvedValue?: ModuleNamespace };\n /** Props to pass to loaded component */\n props?: T;\n /** Loading component */\n loading?: React.ComponentType;\n /** Exported member of module returned by the loader function */\n exportKey?: string;\n /** Timeout to give up loading (in milliseconds) */\n timeout?: number;\n}\n\n/**\n * Get a component asynchronously by providing a loader function that resolves to the module that contains\n * the component.\n */\nexport function getComponentAsync(getComponentAsyncProps: GetComponentAsyncConfiguration) {\n\n return class AsyncComponent extends React.Component<{}, { ResultComponent: React.ComponentType }> {\n state = { ResultComponent: null as any };\n\n componentWillMount() {\n const exportKey = getComponentAsyncProps.exportKey || 'default';\n const loaderResult = getComponentAsyncProps.loader();\n if (loaderResult.resolvedValue) {\n this.setState({ ResultComponent: loaderResult.resolvedValue[exportKey] });\n } else {\n loaderResult.then(result => {\n this.setState({ ResultComponent: result[exportKey] });\n });\n }\n }\n\n render() {\n // TODO: Timeout\n if (this.state.ResultComponent) {\n return \n }\n if (getComponentAsyncProps.loading) {\n return \n }\n return null;\n }\n }\n}\n\n" }, { "path": "global.d.ts", "content": "declare module NodeJS {\n export interface Global {\n /** Report a dynamic module is being required and sent in sync instead */\n __webpack_report_dynamic_module__?: (moduleId: string | number) => void;\n }\n}\n" }, { "path": "index.ts", "content": "export * from './CaptureChunks';\nexport * from './getComponentAsync';\nexport * from './webpack';\n" }, { "path": "package.json", "content": "{\n \"name\": \"universal-async-component\",\n \"version\": \"1.0.1\",\n \"description\": \"Universal Async Component\",\n \"main\": \"index.js\",\n \"repository\": {\n \"type\": \"git\",\n \"url\": \"git@github.com:lyft/universal-async-component.git\"\n },\n \"author\": \"Mohsen Azimi \",\n \"license\": {\n \"type\": \"Apache-2.0\",\n \"url\": \"https://github.com/lyft/universal-async-component/LICENSE\"\n },\n \"typeings\": \"./index.d.ts\",\n \"peerDependencies\": {\n \"react\": \"^15.6.1\"\n },\n \"devDependencies\": {\n \"@types/node\": \"^8.0.15\",\n \"@types/react\": \"^15.0.38\",\n \"@types/webpack\": \"^3.0.5\",\n \"typescript\": \"^2.4.2\"\n },\n \"scripts\": {\n \"prepublish\": \"tsc\"\n }\n}\n" }, { "path": "tsconfig.json", "content": "{\n \"compilerOptions\": {\n \"jsx\": \"react\",\n \"declaration\": true\n }\n}\n" }, { "path": "webpack.ts", "content": "const replace =\n`/* import($1) */(function() {\n var __module_id__ = require.resolveWeak($1)\n var __module_sync__\n if (__webpack_modules__ && __webpack_modules__[__module_id__]) {\n if (typeof global !== \"undefined\" && typeof global.__webpack_report_dynamic_module__ === \"function\") {\n global.__webpack_report_dynamic_module__(__module_id__)\n }\n __module_sync__ = __webpack_require__(__module_id__);\n }\n var __promise__ = import($1)\n if (__module_sync__) { __promise__.resolvedValue = __module_sync__; }\n return __promise__;\n\n})()`;\n\n/** Provide this option object to \"string-replace-loader\" */\nexport const stringReplaceLoaderOptions = {\n // This is a big hack until this issue is resolved:\n // https://github.com/webpack/webpack/issues/5344\n search: /import\\((.*)\\)/,\n replace,\n};\n" } ]