\n )\n)\n\nconst Block = memo(({ methodData, setForceShowTest, id, openModal }) =>\n Object.keys(methodData)\n .filter(variant => !['notes', 'resources', 'spec'].includes(variant))\n .map(variant => (\n \n ))\n)\n\nexport default memo(({ methodData, showTests, id, openModal }) => {\n const [forceShowTest, setForceShowTest] = useState(false)\n return (\n \n \n \n \n \n {methodData.spec && (showTests || forceShowTest) ? (\n \n ) : null}\n \n )\n})\n"
},
{
"path": "src/components/ContentBlock.js",
"content": "import styled from 'styled-components'\n\nconst Content = styled.div`\n padding: 3em 3em 1em;\n max-width: 50em;\n margin: auto;\n\n h1 {\n font-size: 2.6rem;\n strong {\n font-size: clamp(3.9rem, -0.875rem + 8.333vw, 5.2rem);\n display: block;\n }\n }\n\n & + & {\n padding-top: 0;\n }\n\n a del {\n font-size: 85%;\n color: var(--nc-tx-2);\n }\n\n p {\n line-height: 1.8;\n }\n`\n\nexport default Content\n"
},
{
"path": "src/components/Embed.js",
"content": "import React from 'react'\nimport codesandboxUrls from '../code-sandbox.json'\nimport styled from 'styled-components'\n\nconst Embed = styled.iframe`\n width: 100%;\n height: 100%;\n border: 0;\n position: relative;\n`\n\nexport default ({ id }) => {\n console.log(id)\n const url = codesandboxUrls[id]\n return (\n \n )\n}\n"
},
{
"path": "src/components/Footer.js",
"content": "import React from 'react'\nimport Content from './ContentBlock'\n\nexport default ({ footer }) => (\n \n)\n"
},
{
"path": "src/components/Heading.js",
"content": "import React from 'react'\nimport styled from 'styled-components'\n\nconst Heading = styled.h1`\n text-transform: capitalize;\n margin: auto;\n text-align: ${({ hierarchy }) =>\n parseInt(hierarchy, 10) < 3 ? 'center' : 'left'};\n`\n\nexport default ({ hierarchy, children }) => (\n \n {children}\n \n)\n"
},
{
"path": "src/components/LibPage.js",
"content": "import React, { Fragment, useCallback, useState, memo, useEffect } from 'react'\nimport ScrollToTop from 'react-scroll-up'\nimport styled from 'styled-components'\nimport Content from './ContentBlock'\nimport AnchoredBlock from './AnchoredBlock'\nimport Search from './Search'\nimport CodeComparison from './CodeComparison'\nimport dataFilter from '../helpers/data-filter'\nimport ShowTests from './ShowTests'\nimport Modal from './Modal'\n\nconst Row = styled.div`\n background: var(--nc-bg-1);\n padding: 3em;\n\n &:nth-child(2n) {\n background: var(--nc-bg-2);\n border-bottom: 1px solid var(--nc-bg-2);\n }\n`\n\nconst Section = memo(({ method, data, section, showTests, frw, openModal }) => (\n \n \n \n))\n\nconst Block = memo(({ data, showTests, section, frw, openModal }) =>\n Object.keys(data).map(method => (\n \n ))\n)\n\nexport default memo(({ data: initialData, frw }) => {\n const [showTests, setShowTests] = useState(false)\n const [value, setValue] = useState('')\n const [data, setData] = useState(initialData)\n const [embed, setEmbed] = useState()\n\n const onChange = useCallback(\n ({ target: { value } }) => {\n setValue(value)\n setData(dataFilter(initialData, value))\n },\n [initialData]\n )\n\n useEffect(() => {\n setShowTests(false)\n setValue('')\n setData(initialData)\n }, [initialData])\n\n const showTestsToggle = useCallback(\n () => setShowTests(showTests => !showTests),\n []\n )\n\n const closeModal = useCallback(() => setEmbed(), [])\n const openModal = useCallback(id => setEmbed(id), [])\n\n return (\n \n \n \n \n \n {Object.keys(data).map(section => (\n \n \n \n \n \n ))}\n\n \n \n 🔝\n \n \n \n \n )\n})\n"
},
{
"path": "src/components/Modal.js",
"content": "import React, { memo, Suspense, lazy } from 'react'\nimport Modal from 'react-modal'\nimport styled from 'styled-components'\nimport { isMobile } from 'is-mobile'\n\nconst EmbedComponent = lazy(() => import('./Embed'))\n\nModal.setAppElement('#modal-root')\n\nconst Loader = styled.div`\n width: 100%;\n height: 100%;\n background: rgba(255, 255, 255, 0.9);\n\n @keyframes spinner {\n to {\n transform: rotate(360deg);\n }\n }\n\n &:before {\n content: '';\n box-sizing: border-box;\n position: absolute;\n z-index: 0;\n top: 50%;\n left: 50%;\n width: 20px;\n height: 20px;\n margin-top: -10px;\n margin-left: -10px;\n border-radius: 50%;\n border: 2px solid #ccc;\n border-top-color: #000;\n animation: spinner 0.6s linear infinite;\n }\n`\n\nconst CloseBtn = styled.button`\n z-index: 10;\n border: 0;\n cursor: pointer;\n background: #222;\n border-radius: 50px;\n display: inline-block;\n width: 20px;\n height: 20px;\n overflow: hidden;\n text-decoration: none;\n padding: 0;\n font-size: 10px;\n color: white;\n line-height: 2;\n box-shadow: 1px 1px 3px #999;\n position: absolute;\n right: -10px;\n top: -10px;\n\n span {\n text-indent: 100px;\n }\n\n &::before {\n content: '✕';\n display: block;\n }\n`\n\nconst style = {\n overlay: {\n zIndex: 1000,\n background: 'rgba(0,0,0,.5)',\n },\n content: {\n overflow: 'visible',\n color: 'black',\n background: 'none',\n border: 0,\n padding: 0,\n right: 'calc(2vw + 10px)',\n top: 'calc(2vw + 10px)',\n left: 'calc(2vw + 10px)',\n bottom: 'calc(2vw + 10px)',\n },\n}\n\nconst useScrollBodyLock = () => {\n const lock = () => {\n if (isMobile()) {\n const scrollY = `${window.scrollY}px`\n const body = document.body\n body.style.position = 'fixed'\n body.style.top = `-${scrollY}`\n return\n }\n }\n\n const unlock = () => {\n if (isMobile()) {\n const body = document.body\n const scrollY = body.style.top\n const parsedScrollY = parseInt(scrollY || '0') * -1\n\n body.style.position = ''\n body.style.top = ''\n\n if (parsedScrollY) {\n window.scrollTo(0, parseInt(scrollY || '0') * -1)\n }\n return\n }\n }\n\n return { lock, unlock }\n}\n\nexport default memo(({ close, id }) => {\n const { lock, unlock } = useScrollBodyLock()\n\n return (\n \n \n close\n \n\n {id && (\n }>\n \n \n \n \n )}\n \n )\n})\n"
},
{
"path": "src/components/Nav.js",
"content": "import React, { memo } from 'react'\nimport Link from 'next/link'\nimport { useRouter } from 'next/router'\nimport Badge from './Badge'\n\nexport default memo(({ themeToggler }) => {\n const router = useRouter()\n\n return (\n \n )\n})\n"
},
{
"path": "src/components/Page.js",
"content": "import React, { Fragment } from 'react'\nimport Head from 'next/head'\nimport Content from './ContentBlock'\nimport Footer from './Footer'\n\nexport default ({ content, title, children, footer, siteRoot }) => (\n \n \n {title}\n \n \n \n \n \n {children}\n \n \n)\n"
},
{
"path": "src/components/ResponsiveVideo.js",
"content": "import React from 'react'\nimport styled from 'styled-components'\nimport Content from './ContentBlock'\n\nconst VideoContainer = styled.div`\n margin: auto;\n position: relative;\n padding-bottom: 56.25%;\n padding-top: 35px;\n height: 0;\n overflow: hidden;\n\n iframe {\n position: absolute;\n top: 0;\n left: 0;\n width: 100%;\n height: 100%;\n }\n`\n\nexport default ({ title, embedUrl }) => (\n \n \n \n \n \n)\n"
},
{
"path": "src/components/Search.js",
"content": "import React from 'react'\nimport styled from 'styled-components'\n\nconst Input = styled.input`\n width: 100%;\n padding: 0.5em;\n font-size: 120%;\n`\n\nexport default props => \n"
},
{
"path": "src/components/ShowTests.js",
"content": "import React, { memo } from 'react'\nimport styled from 'styled-components'\n\nconst ShowTests = styled.div`\n text-align: right;\n`\n\nexport default memo(({ onChange, checked }) => (\n \n \n \n))\n"
},
{
"path": "src/components/Spec.js",
"content": "import React from 'react'\nimport styled from 'styled-components'\nimport Hightlight from 'react-highlight/lib/optimized'\nimport Heading from './Heading'\n\nconst Tests = styled.div`\n padding-bottom: 4em;\n\n code {\n display: block;\n padding: 15px;\n background: var(--custom-bk-code);\n border: 0;\n border-left: 3px solid var(--nc-lk-1);\n border-radius: 0;\n }\n`\n\nexport default ({ code }) => (\n \n Test\n {code}\n \n)\n"
},
{
"path": "src/content/.eslintrc",
"content": "{\n \"rules\": {\n \"no-console\": 0\n }\n}\n"
},
{
"path": "src/content/css.md",
"content": "# YOU MIGHT NOT NEED **CSS**\n\nSorry, this was clickbait.\n\nThis topic polarised the community in the last few years; you might have landed here either excited or frustrated – in which case I recommend reading [Why is CSS Frustrating?](https://css-tricks.com/why-is-css-frustrating/)\n\nAll I can offer is this talk, which helped me understand where some of the following [experiments](https://github.com/MicheleBertoli/css-in-js) came from. Arguably, some of the solutions out there aren't suitable for most use cases. But having a sense of why people invested in them and what problems they were trying to solve could prove helpful.\n"
},
{
"path": "src/content/date-fns/00-generic/closestIndexTo/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/closestIndexTo\nimport { closestIndexTo } from 'date-fns'\n\n// Which date is closer to 6 September 2015?\nconst dateToCompare = new Date(2015, 8, 6)\nconst datesArray = [\n new Date(2015, 0, 1),\n new Date(2016, 0, 1),\n new Date(2017, 0, 1),\n]\n\nmodule.exports = closestIndexTo(dateToCompare, datesArray)\n// => 1\n"
},
{
"path": "src/content/date-fns/00-generic/closestIndexTo/notes.md",
"content": "Return an index of the closest date from the array comparing to the given date."
},
{
"path": "src/content/date-fns/00-generic/closestIndexTo/spec.js",
"content": "const expected = 1\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('closestIndexTo', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/closestIndexTo/vanilla.js",
"content": "const closestIndexTo = (dateToCompare, datesArray) => {\n const distances = datesArray.map(date => Math.abs(date - dateToCompare))\n return distances.indexOf(Math.min(...distances))\n}\n\n// Which date is closer to 6 September 2015?\nconst dateToCompare = new Date(2015, 8, 6)\nconst datesArray = [\n new Date(2015, 0, 1),\n new Date(2016, 0, 1),\n new Date(2017, 0, 1),\n]\nmodule.exports = closestIndexTo(dateToCompare, datesArray)\n// => 1\n"
},
{
"path": "src/content/date-fns/00-generic/closestTo/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/closestTo\nimport { closestTo } from 'date-fns'\n\n// Which date is closer to 6 September 2015: 1 January 2000 or 1 January 2030?\nconst dateToCompare = new Date(2015, 8, 6)\nmodule.exports = closestTo(dateToCompare, [\n new Date(2000, 0, 1),\n new Date(2030, 0, 1),\n])\n// => Tue Jan 01 2030 00:00:00\n"
},
{
"path": "src/content/date-fns/00-generic/closestTo/notes.md",
"content": "Return a date from the array closest to the given date."
},
{
"path": "src/content/date-fns/00-generic/closestTo/spec.js",
"content": "const expected = new Date(2030, 0, 1)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('closestTo', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/closestTo/vanilla.js",
"content": "const closestTo = (dateToCompare, datesArray) => {\n const distances = datesArray.map(date => Math.abs(date - dateToCompare))\n return datesArray[distances.indexOf(Math.min(...distances))]\n}\n\n// Which date is closer to 6 September 2015: 1 January 2000 or 1 January 2030?\nconst dateToCompare = new Date(2015, 8, 6)\nmodule.exports = closestTo(dateToCompare, [\n new Date(2000, 0, 1),\n new Date(2030, 0, 1),\n])\n// => Tue Jan 01 2030 00:00:00\n"
},
{
"path": "src/content/date-fns/00-generic/compareAsc/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/compareAsc\nimport { compareAsc } from 'date-fns'\n\n// Compare 11 February 1987 and 11 February 1987:\nexports.equal = compareAsc(new Date(1987, 1, 11), new Date(1987, 1, 11))\n// => 0\n\n// Compare 11 February 1987 and 10 July 1989:\nexports.compare = compareAsc(new Date(1987, 1, 11), new Date(1989, 6, 10))\n// => -1\n\n// Sort the array of dates:\nexports.sort = [\n new Date(1995, 6, 2),\n new Date(1987, 1, 11),\n new Date(1989, 6, 10),\n].sort(compareAsc)\n// => [\n// Wed Feb 11 1987 00:00:00,\n// Mon Jul 10 1989 00:00:00,\n// Sun Jul 02 1995 00:00:00\n// ]\n"
},
{
"path": "src/content/date-fns/00-generic/compareAsc/notes.md",
"content": "Compare the two dates and return -1, 0 or 1."
},
{
"path": "src/content/date-fns/00-generic/compareAsc/spec.js",
"content": "const expected = {\n compare: -1,\n equal: 0,\n sort: [new Date(1987, 1, 11), new Date(1989, 6, 10), new Date(1995, 6, 2)],\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('compareAsc', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/compareAsc/vanilla.js",
"content": "const compareAsc = (dateA, dateB) => {\n if (dateA.getTime() === dateB.getTime()) return 0\n return dateA > dateB ? 1 : -1\n}\n\n// Compare 11 February 1987 and 11 February 1987:\nexports.equal = compareAsc(new Date(1987, 1, 11), new Date(1987, 1, 11))\n// => 0\n\n// Compare 11 February 1987 and 10 July 1989:\nexports.compare = compareAsc(new Date(1987, 1, 11), new Date(1989, 6, 10))\n// => -1\n\n// Sort the array of dates:\nexports.sort = [\n new Date(1995, 6, 2),\n new Date(1987, 1, 11),\n new Date(1989, 6, 10),\n].sort(compareAsc)\n// => [\n// Wed Feb 11 1987 00:00:00,\n// Mon Jul 10 1989 00:00:00,\n// Sun Jul 02 1995 00:00:00\n// ]\n"
},
{
"path": "src/content/date-fns/00-generic/compareDesc/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/compareDesc\nimport { compareDesc } from 'date-fns'\n\n// Compare 11 February 1987 and 11 February 1987:\nexports.equal = compareDesc(new Date(1987, 1, 11), new Date(1987, 1, 11))\n// => 0\n\n// Compare 11 February 1987 and 10 July 1989:\nexports.compare = compareDesc(new Date(1987, 1, 11), new Date(1989, 6, 10))\n// => -1\n\n// Sort the array of dates in reverse chronological order:\nexports.sort = [\n new Date(1995, 6, 2),\n new Date(1987, 1, 11),\n new Date(1989, 6, 10),\n].sort(compareDesc)\n// => [\n// Sun Jul 02 1995 00:00:00,\n// Mon Jul 10 1989 00:00:00,\n// Wed Feb 11 1987 00:00:00\n// ]\n"
},
{
"path": "src/content/date-fns/00-generic/compareDesc/notes.md",
"content": "Compare the two dates reverse chronologically and return -1, 0 or 1."
},
{
"path": "src/content/date-fns/00-generic/compareDesc/spec.js",
"content": "const expected = {\n compare: 1,\n equal: 0,\n sort: [new Date(1995, 6, 2), new Date(1989, 6, 10), new Date(1987, 1, 11)],\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('compareDesc', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/compareDesc/vanilla.js",
"content": "const compareDesc = (dateA, dateB) => {\n if (dateA.getTime() === dateB.getTime()) return 0\n return dateA > dateB ? -1 : 1\n}\n\n// Compare 11 February 1987 and 11 February 1987:\nexports.equal = compareDesc(new Date(1987, 1, 11), new Date(1987, 1, 11))\n// => 0\n\n// Compare 11 February 1987 and 10 July 1989:\nexports.compare = compareDesc(new Date(1987, 1, 11), new Date(1989, 6, 10))\n// => -1\n\n// Sort the array of dates in reverse chronological order:\nexports.sort = [\n new Date(1995, 6, 2),\n new Date(1987, 1, 11),\n new Date(1989, 6, 10),\n].sort(compareDesc)\n// => [\n// Sun Jul 02 1995 00:00:00,\n// Mon Jul 10 1989 00:00:00,\n// Wed Feb 11 1987 00:00:00\n// ]\n"
},
{
"path": "src/content/date-fns/00-generic/isAfter/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isAfter\nimport { isAfter } from 'date-fns'\n\nexports.before = isAfter(new Date(1987, 6, 10), new Date(1989, 1, 11))\n// => true\n\nexports.equal = isAfter(new Date(1989, 6, 10), new Date(1989, 6, 10))\n// => false\n\nexports.after = isAfter(new Date(1989, 6, 10), new Date(1987, 1, 11))\n// => true\n"
},
{
"path": "src/content/date-fns/00-generic/isAfter/notes.md",
"content": "Is the first date after the second one?"
},
{
"path": "src/content/date-fns/00-generic/isAfter/spec.js",
"content": "const expected = {\n before: false,\n equal: false,\n after: true,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isAfter', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isAfter/vanilla.js",
"content": "const isAfter = (dateA, dateB) => dateA > dateB\n\nexports.before = isAfter(new Date(1987, 6, 10), new Date(1989, 1, 11))\n// => true\n\nexports.equal = isAfter(new Date(1989, 6, 10), new Date(1989, 6, 10))\n// => false\n\nexports.after = isAfter(new Date(1989, 6, 10), new Date(1987, 1, 11))\n// => true\n"
},
{
"path": "src/content/date-fns/00-generic/isBefore/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isBefore\nimport { isBefore } from 'date-fns'\n\nexports.before = isBefore(new Date(1987, 6, 10), new Date(1989, 1, 11))\n// => true\n\nexports.equal = isBefore(new Date(1989, 6, 10), new Date(1989, 6, 10))\n// => false\n\nexports.after = isBefore(new Date(1989, 6, 10), new Date(1987, 1, 11))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isBefore/notes.md",
"content": "Is the first date before the second one?"
},
{
"path": "src/content/date-fns/00-generic/isBefore/spec.js",
"content": "const expected = {\n before: true,\n equal: false,\n after: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isBefore', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isBefore/vanilla.js",
"content": "const isBefore = (dateA, dateB) => dateA < dateB\n\nexports.before = isBefore(new Date(1987, 6, 10), new Date(1989, 1, 11))\n// => true\n\nexports.equal = isBefore(new Date(1989, 6, 10), new Date(1989, 6, 10))\n// => false\n\nexports.after = isBefore(new Date(1989, 6, 10), new Date(1987, 1, 11))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isDate/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isDate\nimport { isDate } from 'date-fns'\n\n// For a valid date:\nexports.valid = isDate(new Date())\n// => true\n\n// For an invalid date:\nexports.invalid = isDate(new Date(NaN))\n// => true\n\n// For some value:\nexports.string = isDate('2014-02-31')\n// => false\n\n// For an object:\nexports.object = isDate({})\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isDate/notes.md",
"content": "Is the given value a date?"
},
{
"path": "src/content/date-fns/00-generic/isDate/spec.js",
"content": "const expected = {\n valid: true,\n invalid: true,\n string: false,\n object: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isDate', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isDate/vanilla.js",
"content": "const isDate = date => date instanceof Date\n\n// For a valid date:\nexports.valid = isDate(new Date())\n// => true\n\n// For an invalid date:\nexports.invalid = isDate(new Date(NaN))\n// => true\n\n// For some value:\nexports.string = isDate('2014-02-31')\n// => false\n\n// For an object:\nexports.object = isDate({})\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isEqual/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isEqual\nimport { isEqual } from 'date-fns'\n\n// Are 2 July 2014 06:30:45.000 and 2 July 2014 06:30:45.500 equal?\nexports.notEqual = isEqual(\n new Date(2014, 6, 2, 6, 30, 45, 0),\n new Date(2014, 6, 2, 6, 30, 45, 500)\n)\n// => false\n\nexports.equal = isEqual(\n new Date(2014, 6, 2, 6, 30, 45, 500),\n new Date(2014, 6, 2, 6, 30, 45, 500)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/00-generic/isEqual/notes.md",
"content": "Are the given dates equal?"
},
{
"path": "src/content/date-fns/00-generic/isEqual/spec.js",
"content": "const expected = {\n equal: true,\n notEqual: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isEqual', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isEqual/vanilla.js",
"content": "const isEqual = (dateA, dateB) => dateA.getTime() === dateB.getTime()\n\n// Are 2 July 2014 06:30:45.000 and 2 July 2014 06:30:45.500 equal?\nexports.notEqual = isEqual(\n new Date(2014, 6, 2, 6, 30, 45, 0),\n new Date(2014, 6, 2, 6, 30, 45, 500)\n)\n// => false\n\nexports.equal = isEqual(\n new Date(2014, 6, 2, 6, 30, 45, 500),\n new Date(2014, 6, 2, 6, 30, 45, 500)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/00-generic/isExists/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isExists\nimport { isExists } from 'date-fns'\n\n// For the valid date:\nexports.valid = isExists(2018, 0, 31)\n// => true\n\n// For the invalid date:\nexports.invalid = isExists(2018, 1, 31)\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isExists/notes.md",
"content": "Is the given date exists?"
},
{
"path": "src/content/date-fns/00-generic/isExists/spec.js",
"content": "const expected = {\n valid: true,\n invalid: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isExists', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isExists/vanilla.js",
"content": "const isExists = (y, m, d) => {\n const date = new Date(y, m, d)\n\n return (\n date.getDate() === d && date.getMonth() === m && date.getFullYear() === y\n )\n}\n\n// For the valid date:\nexports.valid = isExists(2018, 0, 31)\n// => true\n\n// For the invalid date:\nexports.invalid = isExists(2018, 1, 31)\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isFuture/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isFuture\nimport { isFuture } from 'date-fns'\n\n// If today is 25 September 2014, Is 31 December 2014 in the future?\nexports.future = isFuture(new Date(2014, 11, 31))\n// => true\n\n// If today is 25 September 2014, Is 31 December 1980 in the future?\nexports.past = isFuture(new Date(1980, 11, 31))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isFuture/notes.md",
"content": "Is the given date in the future?"
},
{
"path": "src/content/date-fns/00-generic/isFuture/spec.js",
"content": "const expected = {\n future: true,\n past: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isFuture', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isFuture/vanilla.js",
"content": "const isFuture = date => date > new Date()\n\n// Is 31 December 2214 in the future?\nexports.future = isFuture(new Date(2214, 11, 31))\n// => true\n\n// Is 31 December 1980 in the future?\nexports.past = isFuture(new Date(1980, 11, 31))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isPast/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isPast\nimport { isPast } from 'date-fns'\n\n// If today is 25 September 2014, Is 2 July 2014 in the past?\nexports.past = isPast(new Date(2014, 6, 2))\n// => true\n\n// If today is 25 September 2014, Is 2 July 2015 in the past?\nexports.future = isPast(new Date(2015, 6, 2))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isPast/notes.md",
"content": "Is the given date in the past?"
},
{
"path": "src/content/date-fns/00-generic/isPast/spec.js",
"content": "const expected = {\n past: true,\n future: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isPast', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isPast/vanilla.js",
"content": "const isPast = date => date < new Date()\n\n// Is 2 July 2014 in the past?\nexports.past = isPast(new Date(2014, 6, 2))\n// => true\n\n// Is 2 July 2214 in the past?\nexports.future = isPast(new Date(2214, 6, 2))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isValid/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isValid\nimport { isValid } from 'date-fns'\n\n// For the valid date:\nexports.valid = isValid(new Date(2014, 1, 31))\n// => true\n\n// For the value, convertable into a date:\nexports.convertible = isValid(1393804800000)\n// => true\n\n// For the invalid date:\nexports.invalid = isValid(new Date(''))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/isValid/notes.md",
"content": "Is the given date valid?"
},
{
"path": "src/content/date-fns/00-generic/isValid/spec.js",
"content": "const expected = {\n valid: true,\n convertible: true,\n invalid: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isValid', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/isValid/vanilla.js",
"content": "/* eslint-disable no-restricted-globals */\nconst isValid = date =>\n !isNaN((date instanceof Date ? date : new Date(date)).getTime())\n\n// For the valid date:\nexports.valid = isValid(new Date(2014, 1, 31))\n// => true\n\n// For the value, convertable into a date:\nexports.convertible = isValid(1393804800000)\n// => true\n\n// For the invalid date:\nexports.invalid = isValid(new Date(''))\n// => false\n"
},
{
"path": "src/content/date-fns/00-generic/max/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/max\nimport { max } from 'date-fns'\n\n// Which of these dates is the latest?\nmodule.exports = max([\n new Date(1989, 6, 10),\n new Date(1987, 1, 11),\n new Date(1995, 6, 2),\n new Date(1990, 0, 1),\n])\n// => Sun Jul 02 1995 00:00:00\n"
},
{
"path": "src/content/date-fns/00-generic/max/notes.md",
"content": "Return the latest of the given dates."
},
{
"path": "src/content/date-fns/00-generic/max/spec.js",
"content": "const expected = new Date(1995, 6, 2)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('max', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/max/vanilla.js",
"content": "const max = dates => new Date(Math.max(...dates.map(date => date.getTime())))\n\n// Which of these dates is the latest?\nmodule.exports = max([\n new Date(1989, 6, 10),\n new Date(1987, 1, 11),\n new Date(1995, 6, 2),\n new Date(1990, 0, 1),\n])\n// => Sun Jul 02 1995 00:00:00\n"
},
{
"path": "src/content/date-fns/00-generic/min/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/min\nimport { min } from 'date-fns'\n\n// Which of these dates is the earliest?\nmodule.exports = min([\n new Date(1989, 6, 10),\n new Date(1987, 1, 11),\n new Date(1995, 6, 2),\n new Date(1990, 0, 1),\n])\n// => Wed Feb 11 1987 00:00:00\n"
},
{
"path": "src/content/date-fns/00-generic/min/notes.md",
"content": "Return the earliest of the given dates."
},
{
"path": "src/content/date-fns/00-generic/min/spec.js",
"content": "const expected = new Date(1987, 1, 11)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('min', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/00-generic/min/vanilla.js",
"content": "const min = dates => new Date(Math.min(...dates.map(date => date.getTime())))\n\n// Which of these dates is the earliest?\nmodule.exports = min([\n new Date(1989, 6, 10),\n new Date(1987, 1, 11),\n new Date(1995, 6, 2),\n new Date(1990, 0, 1),\n])\n// => Wed Feb 11 1987 00:00:00\n"
},
{
"path": "src/content/date-fns/01-interval/areIntervalsOverlapping/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/areIntervalsOverlapping\nimport { areIntervalsOverlapping } from 'date-fns'\n\nexports.overlapping = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 17), end: new Date(2014, 0, 21) }\n)\n//=> true\n\nexports.nonOverlapping = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 21), end: new Date(2014, 0, 22) }\n)\n//=> false\n\nexports.adjacent = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) }\n)\n//=> false\n\nexports.inclusive = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) },\n { inclusive: true }\n)\n//=> true\n"
},
{
"path": "src/content/date-fns/01-interval/areIntervalsOverlapping/notes.md",
"content": "Is the given time interval overlapping with another time interval? Adjacent intervals do not count as overlapping unless inclusive is set to true.\n\nResources: [Date#getTime](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime)\n"
},
{
"path": "src/content/date-fns/01-interval/areIntervalsOverlapping/spec.js",
"content": "const expected = {\n 'adjacent': false,\n 'inclusive': true,\n 'nonOverlapping': false,\n 'overlapping': true,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('areIntervalsOverlapping', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/01-interval/areIntervalsOverlapping/vanilla.js",
"content": "const areIntervalsOverlapping = (\n { start: rxStart, end: rxEnd },\n { start: ryStart, end: ryEnd },\n { inclusive } = {}\n) =>\n !!(\n (ryStart > rxStart && ryStart < rxEnd) ||\n (ryEnd > rxStart && ryStart < rxEnd) ||\n (inclusive && rxEnd.getTime() === ryStart.getTime()) ||\n (inclusive && ryEnd.getTime() === rxStart.getTime())\n )\n\nexports.overlapping = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 17), end: new Date(2014, 0, 21) }\n)\n//=> true\n\nexports.nonOverlapping = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 21), end: new Date(2014, 0, 22) }\n)\n//=> false\n\nexports.adjacent = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 20), end: new Date(2014, 0, 30) }\n)\n//=> false\n\nexports.inclusive = areIntervalsOverlapping(\n { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) },\n { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) },\n { inclusive: true }\n)\n//=> true\n"
},
{
"path": "src/content/date-fns/01-interval/eachDayOfInterval/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/eachDayOfInterval\nimport { eachDayOfInterval } from 'date-fns'\n\nexports.default = eachDayOfInterval({\n start: new Date(2014, 9, 6),\n end: new Date(2014, 9, 10),\n})\n//=> [\n// Mon Oct 06 2014 00:00:00,\n// Tue Oct 07 2014 00:00:00,\n// Wed Oct 08 2014 00:00:00,\n// Thu Oct 09 2014 00:00:00,\n// Fri Oct 10 2014 00:00:00\n// ]\n\nexports.stepped = eachDayOfInterval(\n {\n start: new Date(2014, 9, 6),\n end: new Date(2014, 9, 10),\n },\n { step: 3 }\n)\n\n//=> [\n// Wed Oct 06 2014 00:00:00,\n// Mon Oct 09 2014 00:00:00,\n// ]\n"
},
{
"path": "src/content/date-fns/01-interval/eachDayOfInterval/notes.md",
"content": ""
},
{
"path": "src/content/date-fns/01-interval/eachDayOfInterval/spec.js",
"content": "const expected = {\n 'default': [\n new Date(2014, 9, 6).toString(),\n new Date(2014, 9, 7).toString(),\n new Date(2014, 9, 8).toString(),\n new Date(2014, 9, 9).toString(),\n new Date(2014, 9, 10).toString(),\n ],\n 'stepped': [new Date(2014, 9, 6).toString(), new Date(2014, 9, 9).toString()],\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('eachDayOfInterval', () => {\n expect({\n default: datefns.default.map(a => a.toString()),\n stepped: datefns.stepped.map(a => a.toString()),\n }).toEqual(expected)\n expect({\n default: plain.default.map(a => a.toString()),\n stepped: plain.stepped.map(a => a.toString()),\n }).toEqual(expected)\n})\n"
},
{
"path": "src/content/date-fns/01-interval/eachDayOfInterval/vanilla.js",
"content": "const eachDayOfInterval = ({ start, end }, { step } = { step: 1 }) => {\n const retArr = []\n start.setHours(0, 0, 0, 0)\n end.setHours(0, 0, 0, 0)\n\n do {\n retArr.push(new Date(start.getTime()))\n start.setDate(start.getDate() + step)\n } while (start.getTime() <= end.getTime())\n\n return retArr\n}\n\nexports.default = eachDayOfInterval({\n start: new Date(2014, 9, 6),\n end: new Date(2014, 9, 10),\n})\n\n//=> [\n// Mon Oct 06 2014 00:00:00,\n// Tue Oct 07 2014 00:00:00,\n// Wed Oct 08 2014 00:00:00,\n// Thu Oct 09 2014 00:00:00,\n// Fri Oct 10 2014 00:00:00\n// ]\n\nexports.stepped = eachDayOfInterval(\n {\n start: new Date(2014, 9, 6),\n end: new Date(2014, 9, 10),\n },\n { step: 3 }\n)\n//=> [\n// Wed Oct 06 2014 00:00:00,\n// Mon Oct 08 2014 00:00:00,\n// ]\n"
},
{
"path": "src/content/date-fns/01-interval/isWithinInterval/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isWithinInterval\nimport { isWithinInterval } from 'date-fns'\n\nexports.in = isWithinInterval(new Date(2014, 0, 3), {\n start: new Date(2014, 0, 1),\n end: new Date(2014, 0, 7),\n})\n//=> true\n\nexports.out = isWithinInterval(new Date(2014, 0, 10), {\n start: new Date(2014, 0, 1),\n end: new Date(2014, 0, 7),\n})\n//=> false\n\nconst date = new Date()\n\nexports.start = isWithinInterval(date, {\n start: date,\n end: new Date(2500, 0, 1),\n})\n// => true\n\nexports.end = isWithinInterval(date, {\n start: new Date(2020, 0, 1),\n end: date,\n})\n// => true\n"
},
{
"path": "src/content/date-fns/01-interval/isWithinInterval/notes.md",
"content": ""
},
{
"path": "src/content/date-fns/01-interval/isWithinInterval/spec.js",
"content": "const expected = { 'in': true, 'out': false, 'start': true, 'end': true }\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isWithinInterval', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/01-interval/isWithinInterval/vanilla.js",
"content": "const isWithinInterval = (date, { start, end }) =>\n date.getTime() >= start.getTime() && date.getTime() <= end.getTime()\n\nexports.in = isWithinInterval(new Date(2014, 0, 3), {\n start: new Date(2014, 0, 1),\n end: new Date(2014, 0, 7),\n})\n//=> true\n\nexports.out = isWithinInterval(new Date(2014, 0, 10), {\n start: new Date(2014, 0, 1),\n end: new Date(2014, 0, 7),\n})\n//=> false\n\n// new Date is mocked as\n// new Date(2014, 8, 25, 18, 30, 15, 500)\nconst date = new Date()\n\nexports.start = isWithinInterval(date, {\n start: date,\n end: new Date(2020, 0, 1),\n})\n// => true\n\nexports.end = isWithinInterval(date, {\n start: new Date(2000, 0, 1),\n end: date,\n})\n// => true\n"
},
{
"path": "src/content/date-fns/01-timestamp/fromUnixTime/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/fromUnixTime\nimport { fromUnixTime } from 'date-fns'\n\n// Create the date 29 February 2012 11:45:05:\nmodule.exports = fromUnixTime(1330515905)\n// => Wed Feb 29 2012 11:45:05\n"
},
{
"path": "src/content/date-fns/01-timestamp/fromUnixTime/notes.md",
"content": "Create a date from a Unix timestamp."
},
{
"path": "src/content/date-fns/01-timestamp/fromUnixTime/spec.js",
"content": "const expected = new Date(Date.UTC(2012, 1, 29, 11, 45, 5))\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('fromUnixTime', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/01-timestamp/fromUnixTime/vanilla.js",
"content": "const fromUnixTime = unixTime => new Date(unixTime * 1000)\n\n// Create the date 29 February 2012 11:45:05:\nmodule.exports = fromUnixTime(1330515905)\n// => Wed Feb 29 2012 11:45:05\n"
},
{
"path": "src/content/date-fns/01-timestamp/getTime/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getTime\nimport { getTime } from 'date-fns'\n\n// Get the timestamp of 29 February 2012 11:45:05.123:\nmodule.exports = getTime(new Date(Date.UTC(2012, 1, 29, 11, 45, 5, 123)))\n// => 1330515905123\n"
},
{
"path": "src/content/date-fns/01-timestamp/getTime/notes.md",
"content": "Get the milliseconds timestamp of the given date."
},
{
"path": "src/content/date-fns/01-timestamp/getTime/spec.js",
"content": "const expected = 1330515905123\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getTime', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/01-timestamp/getTime/vanilla.js",
"content": "const getTime = date => date.getTime()\n\n// Get the timestamp of 29 February 2012 11:45:05.123:\nmodule.exports = getTime(new Date(Date.UTC(2012, 1, 29, 11, 45, 5, 123)))\n// => 1330515905123\n"
},
{
"path": "src/content/date-fns/01-timestamp/getUnixTime/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getUnixTime\nimport { getUnixTime } from 'date-fns'\n\n// Get the timestamp of 29 February 2012 11:45:05 CET:\nmodule.exports = getUnixTime(new Date(Date.UTC(2012, 1, 29, 11, 45, 5)))\n// => 1330515905\n"
},
{
"path": "src/content/date-fns/01-timestamp/getUnixTime/notes.md",
"content": "Get the seconds timestamp of the given date."
},
{
"path": "src/content/date-fns/01-timestamp/getUnixTime/spec.js",
"content": "const expected = 1330515905\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getUnixTime', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/01-timestamp/getUnixTime/vanilla.js",
"content": "const getUnixTime = date => Math.trunc(date / 1000)\n\n// Get the timestamp of 29 February 2012 11:45:05 CET:\nmodule.exports = getUnixTime(new Date(Date.UTC(2012, 1, 29, 11, 45, 5)))\n// => 1330512305\n"
},
{
"path": "src/content/date-fns/02-millisecond/addMilliseconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addMilliseconds\nimport { addMilliseconds } from 'date-fns'\n\n// Add 750 milliseconds to 10 July 2014 12:45:30.000:\nmodule.exports = addMilliseconds(new Date(2014, 6, 10, 12, 45, 30, 0), 750)\n// => Thu Jul 10 2014 12:45:30.750\n"
},
{
"path": "src/content/date-fns/02-millisecond/addMilliseconds/notes.md",
"content": "Add the specified number of milliseconds to the given date."
},
{
"path": "src/content/date-fns/02-millisecond/addMilliseconds/spec.js",
"content": "const expected = new Date(2014, 6, 10, 12, 45, 30, 750)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addMilliseconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-millisecond/addMilliseconds/vanilla.js",
"content": "const addMilliseconds = (date, ms) => {\n date.setMilliseconds(date.getMilliseconds() + ms)\n return date\n}\n\n// Add 750 milliseconds to 10 July 2014 12:45:30.000:\nmodule.exports = addMilliseconds(new Date(2014, 6, 10, 12, 45, 30, 0), 750)\n// => Thu Jul 10 2014 12:45:30.750\n"
},
{
"path": "src/content/date-fns/02-millisecond/differenceInMilliseconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInMilliseconds\nimport { differenceInMilliseconds } from 'date-fns'\n\n// How many milliseconds are between\n// 2 July 2014 12:30:20.600 and 2 July 2014 12:30:21.700?\nmodule.exports = differenceInMilliseconds(\n new Date(2014, 6, 2, 12, 30, 21, 700),\n new Date(2014, 6, 2, 12, 30, 20, 600)\n)\n// => 1100\n"
},
{
"path": "src/content/date-fns/02-millisecond/differenceInMilliseconds/notes.md",
"content": "Get the number of milliseconds between the given dates."
},
{
"path": "src/content/date-fns/02-millisecond/differenceInMilliseconds/spec.js",
"content": "const expected = 1100\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInMilliseconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-millisecond/differenceInMilliseconds/vanilla.js",
"content": "const differenceInMilliseconds = (dateA, dateB) => dateA - dateB\n\n// How many milliseconds are between\n// 2 July 2014 12:30:20.600 and 2 July 2014 12:30:21.700?\nmodule.exports = differenceInMilliseconds(\n new Date(2014, 6, 2, 12, 30, 21, 700),\n new Date(2014, 6, 2, 12, 30, 20, 600)\n)\n// => 1100\n"
},
{
"path": "src/content/date-fns/02-millisecond/getMilliseconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getMilliseconds\nimport { getMilliseconds } from 'date-fns'\n\n// Get the milliseconds of 29 February 2012 11:45:05.123:\nmodule.exports = getMilliseconds(new Date(2012, 1, 29, 11, 45, 5, 123))\n// => 123\n"
},
{
"path": "src/content/date-fns/02-millisecond/getMilliseconds/notes.md",
"content": "Get the milliseconds of the given date."
},
{
"path": "src/content/date-fns/02-millisecond/getMilliseconds/spec.js",
"content": "const expected = 123\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getMilliseconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-millisecond/getMilliseconds/vanilla.js",
"content": "const getMilliseconds = date => date.getMilliseconds()\n\n// Get the milliseconds of 29 February 2012 11:45:05.123:\nmodule.exports = getMilliseconds(new Date(2012, 1, 29, 11, 45, 5, 123))\n// => 123\n"
},
{
"path": "src/content/date-fns/02-millisecond/setMilliseconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setMilliseconds\nimport { setMilliseconds } from 'date-fns'\n\n// Set 300 milliseconds to 1 September 2014 11:30:40.500:\nmodule.exports = setMilliseconds(new Date(2014, 8, 1, 11, 30, 40, 500), 300)\n// => Mon Sep 01 2014 11:30:40.300\n"
},
{
"path": "src/content/date-fns/02-millisecond/setMilliseconds/notes.md",
"content": "Set the milliseconds to the given date."
},
{
"path": "src/content/date-fns/02-millisecond/setMilliseconds/spec.js",
"content": "const expected = new Date(2014, 8, 1, 11, 30, 40, 300)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setMilliseconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-millisecond/setMilliseconds/vanilla.js",
"content": "const setMilliseconds = (date, ms) => {\n date.setMilliseconds(ms)\n return date\n}\n\n// Set 300 milliseconds to 1 September 2014 11:30:40.500:\nmodule.exports = setMilliseconds(new Date(2014, 8, 1, 11, 30, 40, 500), 300)\n// => Mon Sep 01 2014 11:30:40.300\n"
},
{
"path": "src/content/date-fns/02-millisecond/subMilliseconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subMilliseconds\nimport { subMilliseconds } from 'date-fns'\n\n// Subtract 750 milliseconds from 10 July 2014 12:45:30.000:\nmodule.exports = subMilliseconds(new Date(2014, 6, 10, 12, 45, 30, 0), 750)\n// => Thu Jul 10 2014 12:45:29.250\n"
},
{
"path": "src/content/date-fns/02-millisecond/subMilliseconds/notes.md",
"content": "Subtract the specified number of milliseconds from the given date."
},
{
"path": "src/content/date-fns/02-millisecond/subMilliseconds/spec.js",
"content": "const expected = new Date(2014, 6, 10, 12, 45, 29, 250)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subMilliseconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-millisecond/subMilliseconds/vanilla.js",
"content": "const subMilliseconds = (date, ms) => {\n date.setMilliseconds(date.getMilliseconds() - ms)\n return date\n}\n\n// Subtract 750 milliseconds from 10 July 2014 12:45:30.000:\nmodule.exports = subMilliseconds(new Date(2014, 6, 10, 12, 45, 30, 0), 750)\n// => Thu Jul 10 2014 12:45:29.250\n"
},
{
"path": "src/content/date-fns/02-second/addSeconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addSeconds\nimport { addSeconds } from 'date-fns'\n\n// Add 30 seconds to 10 July 2014 12:45:00:\nmodule.exports = addSeconds(new Date(2014, 6, 10, 12, 45, 0), 30)\n// => Thu Jul 10 2014 12:45:30\n"
},
{
"path": "src/content/date-fns/02-second/addSeconds/notes.md",
"content": "Add the specified number of seconds to the given date."
},
{
"path": "src/content/date-fns/02-second/addSeconds/spec.js",
"content": "const expected = new Date(2014, 6, 10, 12, 45, 30)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addSeconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/addSeconds/vanilla.js",
"content": "const addSeconds = (date, s) => {\n date.setSeconds(date.getSeconds() + s)\n return date\n}\n\n// Add 30 seconds to 10 July 2014 12:45:00:\nmodule.exports = addSeconds(new Date(2014, 6, 10, 12, 45, 0), 30)\n// => Thu Jul 10 2014 12:45:30\n"
},
{
"path": "src/content/date-fns/02-second/differenceInSeconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInSeconds\nimport { differenceInSeconds } from 'date-fns'\n\n// How many seconds are between\n// 2 July 2014 12:30:07.999 and 2 July 2014 12:30:20.000?\nmodule.exports = differenceInSeconds(\n new Date(2014, 6, 2, 12, 30, 20, 0),\n new Date(2014, 6, 2, 12, 30, 7, 999)\n)\n// => 12\n"
},
{
"path": "src/content/date-fns/02-second/differenceInSeconds/notes.md",
"content": "Get the number of seconds between the given dates."
},
{
"path": "src/content/date-fns/02-second/differenceInSeconds/spec.js",
"content": "const expected = 12\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInSeconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/differenceInSeconds/vanilla.js",
"content": "const differenceInSeconds = (dateA, dateB) => Math.trunc((dateA - dateB) / 1000)\n\n// How many seconds are between\n// 2 July 2014 12:30:07.999 and 2 July 2014 12:30:20.000?\nmodule.exports = differenceInSeconds(\n new Date(2014, 6, 2, 12, 30, 20, 0),\n new Date(2014, 6, 2, 12, 30, 7, 999)\n)\n// => 12\n"
},
{
"path": "src/content/date-fns/02-second/endOfSecond/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/endOfSecond\nimport { endOfSecond } from 'date-fns'\n\n// The end of a second for 1 December 2014 22:15:45.400:\nmodule.exports = endOfSecond(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:45.999\n"
},
{
"path": "src/content/date-fns/02-second/endOfSecond/notes.md",
"content": "Return the end of a second for the given date."
},
{
"path": "src/content/date-fns/02-second/endOfSecond/spec.js",
"content": "const expected = new Date(2014, 11, 1, 22, 15, 45, 999)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('endOfSecond', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/endOfSecond/vanilla.js",
"content": "const endOfSecond = date => new Date(Math.ceil(date / 1000) * 1000 - 1)\n\n// The end of a second for 1 December 2014 22:15:45.400:\nmodule.exports = endOfSecond(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:45.999\n"
},
{
"path": "src/content/date-fns/02-second/getSeconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getSeconds\nimport { getSeconds } from 'date-fns'\n\n// Get the seconds of 29 February 2012 11:45:05.123:\nmodule.exports = getSeconds(new Date(2012, 1, 29, 11, 45, 5, 123))\n// => 5\n"
},
{
"path": "src/content/date-fns/02-second/getSeconds/notes.md",
"content": "Get the seconds of the given date."
},
{
"path": "src/content/date-fns/02-second/getSeconds/spec.js",
"content": "const expected = 5\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getSeconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/getSeconds/vanilla.js",
"content": "const getSeconds = date => date.getSeconds()\n\n// Get the seconds of 29 February 2012 11:45:05.123:\nmodule.exports = getSeconds(new Date(2012, 1, 29, 11, 45, 5, 123))\n// => 5\n"
},
{
"path": "src/content/date-fns/02-second/isSameSecond/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSameSecond\nimport { isSameSecond } from 'date-fns'\n\n// Are 4 September 2014 06:30:15.000 and 4 September 2014 06:30.15.500\n// in the same second?\nmodule.exports = isSameSecond(\n new Date(2014, 8, 4, 6, 30, 15),\n new Date(2014, 8, 4, 6, 30, 15, 500)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/02-second/isSameSecond/notes.md",
"content": "Are the given dates in the same second?"
},
{
"path": "src/content/date-fns/02-second/isSameSecond/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSameSecond', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/isSameSecond/vanilla.js",
"content": "const isSameSecond = (dateA, dateB) =>\n Math.abs(dateA - dateB) < 1000 && dateA.getSeconds() === dateB.getSeconds()\n\n// Are 4 September 2014 06:30:15.000 and 4 September 2014 06:30.15.500\n// in the same second?\nmodule.exports = isSameSecond(\n new Date(2014, 8, 4, 6, 30, 15, 0),\n new Date(2014, 8, 4, 6, 30, 15, 500)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/02-second/isThisSecond/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isThisSecond\nimport { isThisSecond } from 'date-fns'\n\n// If now is 25 September 2014 18:30:15.500,\n// is 25 September 2014 18:30:15.000 in this second?\nmodule.exports = isThisSecond(new Date(2014, 8, 25, 18, 30, 15))\n// => true\n"
},
{
"path": "src/content/date-fns/02-second/isThisSecond/notes.md",
"content": "Is the given date in the same second as the current date?"
},
{
"path": "src/content/date-fns/02-second/isThisSecond/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isThisSecond', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/isThisSecond/vanilla.js",
"content": "const isThisSecond = (dateA, dateB = new Date()) =>\n Math.abs(dateA - dateB) < 1000 && dateA.getSeconds() === dateB.getSeconds()\n\n// If now is 25 September 2014 18:30:15.500,\n// is 25 September 2014 18:30:15.000 in this second?\nmodule.exports = isThisSecond(new Date(2014, 8, 25, 18, 30, 15))\n// => true\n"
},
{
"path": "src/content/date-fns/02-second/setSeconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setSeconds\nimport { setSeconds } from 'date-fns'\n\n// Set 45 seconds to 1 September 2014 11:30:40:\nmodule.exports = setSeconds(new Date(2014, 8, 1, 11, 30, 40), 45)\n// => Mon Sep 01 2014 11:30:45\n"
},
{
"path": "src/content/date-fns/02-second/setSeconds/notes.md",
"content": "Set the seconds to the given date."
},
{
"path": "src/content/date-fns/02-second/setSeconds/spec.js",
"content": "const expected = new Date(2014, 8, 1, 11, 30, 45)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setSeconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/setSeconds/vanilla.js",
"content": "const setSeconds = (date, s) => {\n date.setSeconds(s)\n return date\n}\n\n// Set 45 seconds to 1 September 2014 11:30:40:\nmodule.exports = setSeconds(new Date(2014, 8, 1, 11, 30, 40), 45)\n// => Mon Sep 01 2014 11:30:45\n"
},
{
"path": "src/content/date-fns/02-second/startOfSecond/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/startOfSecond\nimport { startOfSecond } from 'date-fns'\n\n// The start of a second for 1 December 2014 22:15:45.400:\nmodule.exports = startOfSecond(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:45.000\n"
},
{
"path": "src/content/date-fns/02-second/startOfSecond/notes.md",
"content": "Return the start of a second for the given date."
},
{
"path": "src/content/date-fns/02-second/startOfSecond/spec.js",
"content": "const expected = new Date(2014, 11, 1, 22, 15, 45)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('startOfSecond', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/startOfSecond/vanilla.js",
"content": "const startOfSecond = date => new Date(Math.floor(date / 1000) * 1000)\n\n// The start of a second for 1 December 2014 22:15:45.400:\nmodule.exports = startOfSecond(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:45.000\n"
},
{
"path": "src/content/date-fns/02-second/subSeconds/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subSeconds\nimport { subSeconds } from 'date-fns'\n\n// Subtract 30 seconds from 10 July 2014 12:45:00:\nmodule.exports = subSeconds(new Date(2014, 6, 10, 12, 45, 0), 30)\n// => Thu Jul 10 2014 12:44:30\n"
},
{
"path": "src/content/date-fns/02-second/subSeconds/notes.md",
"content": "Subtract the specified number of seconds from the given date."
},
{
"path": "src/content/date-fns/02-second/subSeconds/spec.js",
"content": "const expected = new Date(2014, 6, 10, 12, 44, 30)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subSeconds', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/02-second/subSeconds/vanilla.js",
"content": "const subSeconds = (date, s) => {\n date.setSeconds(date.getSeconds() - s)\n return date\n}\n\n// Subtract 30 seconds from 10 July 2014 12:45:00:\nmodule.exports = subSeconds(new Date(2014, 6, 10, 12, 45, 0), 30)\n// => Thu Jul 10 2014 12:44:30\n"
},
{
"path": "src/content/date-fns/03-minute/addMinutes/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addMinutes\nimport { addMinutes } from 'date-fns'\n\n// Add 30 minutes to 10 July 2014 12:00:00:\nmodule.exports = addMinutes(new Date(2014, 6, 10, 12, 0), 30)\n// => Thu Jul 10 2014 12:30:00\n"
},
{
"path": "src/content/date-fns/03-minute/addMinutes/notes.md",
"content": "Add the specified number of minutes to the given date."
},
{
"path": "src/content/date-fns/03-minute/addMinutes/spec.js",
"content": "const expected = new Date(2014, 6, 10, 12, 30)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addMinutes', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/addMinutes/vanilla.js",
"content": "const addMinutes = (date, m) => {\n date.setMinutes(date.getMinutes() + m)\n return date\n}\n\n// Add 30 minutes to 10 July 2014 12:00:00:\nmodule.exports = addMinutes(new Date(2014, 6, 10, 12, 0), 30)\n// => Thu Jul 10 2014 12:30:00\n"
},
{
"path": "src/content/date-fns/03-minute/differenceInMinutes/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInMinutes\nimport { differenceInMinutes } from 'date-fns'\n\n// How many minutes are between 2 July 2014 12:07:59 and 2 July 2014 12:20:00?\nexports.positive = differenceInMinutes(\n new Date(2014, 6, 2, 12, 20, 0),\n new Date(2014, 6, 2, 12, 7, 59)\n)\n// => 12\n\n// How many minutes are from 10:01:59 to 10:00:00\nexports.negative = differenceInMinutes(\n new Date(2000, 0, 1, 10, 0, 0),\n new Date(2000, 0, 1, 10, 1, 59)\n)\n// => -1\n"
},
{
"path": "src/content/date-fns/03-minute/differenceInMinutes/notes.md",
"content": "Get the number of minutes between the given dates."
},
{
"path": "src/content/date-fns/03-minute/differenceInMinutes/spec.js",
"content": "const expected = {\n positive: 12,\n negative: -1,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInMinutes', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/differenceInMinutes/vanilla.js",
"content": "const differenceInMinutes = (dateA, dateB) =>\n Math.trunc((dateA - dateB) / (1000 * 60))\n\n// How many minutes are between 2 July 2014 12:07:59 and 2 July 2014 12:20:00?\nexports.positive = differenceInMinutes(\n new Date(2014, 6, 2, 12, 20, 0),\n new Date(2014, 6, 2, 12, 7, 59)\n)\n// => 12\n\n// How many minutes are from 10:01:59 to 10:00:00\nexports.negative = differenceInMinutes(\n new Date(2000, 0, 1, 10, 0, 0),\n new Date(2000, 0, 1, 10, 1, 59)\n)\n// => -1\n"
},
{
"path": "src/content/date-fns/03-minute/endOfMinute/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/endOfMinute\nimport { endOfMinute } from 'date-fns'\n\n// The end of a minute for 1 December 2014 22:15:45.400:\nmodule.exports = endOfMinute(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:59.999\n"
},
{
"path": "src/content/date-fns/03-minute/endOfMinute/notes.md",
"content": "Return the end of a minute for the given date."
},
{
"path": "src/content/date-fns/03-minute/endOfMinute/spec.js",
"content": "const expected = new Date(2014, 11, 1, 22, 15, 59, 999)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('endOfMinute', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/endOfMinute/vanilla.js",
"content": "const endOfMinute = date =>\n new Date(Math.ceil(date / (1000 * 60)) * 1000 * 60 - 1)\n\n// The end of a minute for 1 December 2014 22:15:45.400:\nmodule.exports = endOfMinute(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:59.999\n"
},
{
"path": "src/content/date-fns/03-minute/getMinutes/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getMinutes\nimport { getMinutes } from 'date-fns'\n\n// Get the minutes of 29 February 2012 11:45:05:\nmodule.exports = getMinutes(new Date(2012, 1, 29, 11, 45, 5))\n// => 45\n"
},
{
"path": "src/content/date-fns/03-minute/getMinutes/notes.md",
"content": "Get the minutes of the given date."
},
{
"path": "src/content/date-fns/03-minute/getMinutes/spec.js",
"content": "const expected = 45\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getMinutes', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/getMinutes/vanilla.js",
"content": "const getMinutes = date => date.getMinutes()\n\n// Get the minutes of 29 February 2012 11:45:05:\nmodule.exports = getMinutes(new Date(2012, 1, 29, 11, 45, 5))\n// => 45\n"
},
{
"path": "src/content/date-fns/03-minute/isSameMinute/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSameMinute\nimport { isSameMinute } from 'date-fns'\n\n// Are 4 September 2014 06:30:00 and 4 September 2014 06:30:15\n// in the same minute?\nmodule.exports = isSameMinute(\n new Date(2014, 8, 4, 6, 30),\n new Date(2014, 8, 4, 6, 30, 15)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/03-minute/isSameMinute/notes.md",
"content": "Are the given dates in the same minute?"
},
{
"path": "src/content/date-fns/03-minute/isSameMinute/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSameMinute', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/isSameMinute/vanilla.js",
"content": "const isSameMinute = (dateA, dateB) =>\n Math.abs(dateA - dateB) < 1000 * 60 &&\n dateA.getMinutes() === dateB.getMinutes()\n\n// Are 4 September 2014 06:30:00 and 4 September 2014 06:30:15\n// in the same minute?\nmodule.exports = isSameMinute(\n new Date(2014, 8, 4, 6, 30),\n new Date(2014, 8, 4, 6, 30, 15)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/03-minute/isThisMinute/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isThisMinute\nimport { isThisMinute } from 'date-fns'\n\n// If now is 25 September 2014 18:30:15.500,\n// is 25 September 2014 18:30:00 in this minute?\nmodule.exports = isThisMinute(new Date(2014, 8, 25, 18, 30))\n// => true\n"
},
{
"path": "src/content/date-fns/03-minute/isThisMinute/notes.md",
"content": "Is the given date in the same minute as the current date?"
},
{
"path": "src/content/date-fns/03-minute/isThisMinute/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isThisMinute', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/isThisMinute/vanilla.js",
"content": "const isThisMinute = (dateA, dateB = new Date()) =>\n Math.abs(dateA - dateB) < 1000 * 60 &&\n dateA.getMinutes() === dateB.getMinutes()\n\n// If now is 25 September 2014 18:30:15.500,\n// is 25 September 2014 18:30:00 in this minute?\nmodule.exports = isThisMinute(new Date(2014, 8, 25, 18, 30))\n// => true\n"
},
{
"path": "src/content/date-fns/03-minute/roundToNearestMinutes/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/roundToNearestMinutes\nimport { roundToNearestMinutes } from 'date-fns'\n\n// Round 10 July 2014 12:12:34 to nearest minute:\nmodule.exports = roundToNearestMinutes(new Date(2014, 6, 10, 12, 12, 34))\n// => Thu Jul 10 2014 12:13:00\n"
},
{
"path": "src/content/date-fns/03-minute/roundToNearestMinutes/notes.md",
"content": "Rounds the given date to the nearest minute"
},
{
"path": "src/content/date-fns/03-minute/roundToNearestMinutes/spec.js",
"content": "const expected = new Date(2014, 6, 10, 12, 13)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('roundToNearestMinutes', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/roundToNearestMinutes/vanilla.js",
"content": "const roundToNearestMinutes = date =>\n new Date(Math.round(date / (1000 * 60)) * 1000 * 60)\n\n// Round 10 July 2014 12:12:34 to nearest minute:\nmodule.exports = roundToNearestMinutes(new Date(2014, 6, 10, 12, 12, 34))\n// => Thu Jul 10 2014 12:13:00\n"
},
{
"path": "src/content/date-fns/03-minute/setMinutes/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setMinutes\nimport { setMinutes } from 'date-fns'\n\n// Set 45 minutes to 1 September 2014 11:30:40:\nmodule.exports = setMinutes(new Date(2014, 8, 1, 11, 30, 40), 45)\n// => Mon Sep 01 2014 11:45:40\n"
},
{
"path": "src/content/date-fns/03-minute/setMinutes/notes.md",
"content": "Set the minutes to the given date."
},
{
"path": "src/content/date-fns/03-minute/setMinutes/spec.js",
"content": "const expected = new Date(2014, 8, 1, 11, 45, 40)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setMinutes', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/setMinutes/vanilla.js",
"content": "const setMinutes = (date, m) => {\n date.setMinutes(m)\n return date\n}\n\n// Set 45 minutes to 1 September 2014 11:30:40:\nmodule.exports = setMinutes(new Date(2014, 8, 1, 11, 30, 40), 45)\n// => Mon Sep 01 2014 11:45:40\n"
},
{
"path": "src/content/date-fns/03-minute/startOfMinute/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/startOfMinute\nimport { startOfMinute } from 'date-fns'\n\n// The start of a minute for 1 December 2014 22:15:45.400:\nmodule.exports = startOfMinute(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:00\n"
},
{
"path": "src/content/date-fns/03-minute/startOfMinute/notes.md",
"content": "Return the start of a minute for the given date."
},
{
"path": "src/content/date-fns/03-minute/startOfMinute/spec.js",
"content": "const expected = new Date(2014, 11, 1, 22, 15)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('startOfMinute', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/startOfMinute/vanilla.js",
"content": "const startOfMinute = date =>\n new Date(Math.floor(date / (1000 * 60)) * 1000 * 60)\n\n// The start of a minute for 1 December 2014 22:15:45.400:\nmodule.exports = startOfMinute(new Date(2014, 11, 1, 22, 15, 45, 400))\n// => Mon Dec 01 2014 22:15:00\n"
},
{
"path": "src/content/date-fns/03-minute/subMinutes/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subMinutes\nimport { subMinutes } from 'date-fns'\n\n// Subtract 30 minutes from 10 July 2014 12:00:00:\nmodule.exports = subMinutes(new Date(2014, 6, 10, 12, 0), 30)\n// => Thu Jul 10 2014 11:30:00\n"
},
{
"path": "src/content/date-fns/03-minute/subMinutes/notes.md",
"content": "Subtract the specified number of minutes from the given date."
},
{
"path": "src/content/date-fns/03-minute/subMinutes/spec.js",
"content": "const expected = new Date(2014, 6, 10, 11, 30)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subMinutes', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/03-minute/subMinutes/vanilla.js",
"content": "const subMinutes = (date, m) => {\n date.setMinutes(date.getMinutes() - m)\n return date\n}\n\n// Subtract 30 minutes from 10 July 2014 12:00:00:\nmodule.exports = subMinutes(new Date(2014, 6, 10, 12, 0), 30)\n// => Thu Jul 10 2014 11:30:00\n"
},
{
"path": "src/content/date-fns/04-hour/addHours/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addHours\nimport { addHours } from 'date-fns'\n\n// Add 2 hours to 10 July 2014 23:00:00:\nmodule.exports = addHours(new Date(2014, 6, 10, 23, 0), 2)\n// => Fri Jul 11 2014 01:00:00\n"
},
{
"path": "src/content/date-fns/04-hour/addHours/notes.md",
"content": "Add the specified number of hours to the given date."
},
{
"path": "src/content/date-fns/04-hour/addHours/spec.js",
"content": "const expected = new Date(2014, 6, 11, 1, 0)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addHours', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/addHours/vanilla.js",
"content": "const addHours = (date, h) => {\n date.setHours(date.getHours() + h)\n return date\n}\n\n// Add 2 hours to 10 July 2014 23:00:00:\nmodule.exports = addHours(new Date(2014, 6, 10, 23, 0), 2)\n// => Fri Jul 11 2014 01:00:00\n"
},
{
"path": "src/content/date-fns/04-hour/differenceInHours/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInHours\nimport { differenceInHours } from 'date-fns'\n\n// How many hours are between 2 July 2014 06:50:00 and 2 July 2014 19:00:00?\nmodule.exports = differenceInHours(\n new Date(2014, 6, 2, 19, 0),\n new Date(2014, 6, 2, 6, 50)\n)\n// => 12\n"
},
{
"path": "src/content/date-fns/04-hour/differenceInHours/notes.md",
"content": "Get the number of hours between the given dates."
},
{
"path": "src/content/date-fns/04-hour/differenceInHours/spec.js",
"content": "const expected = 12\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInHours', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/differenceInHours/vanilla.js",
"content": "const HOUR_IN_MS = 1000 * 60 * 60\n\nconst differenceInHours = (dateA, dateB) =>\n Math.trunc((dateA - dateB) / HOUR_IN_MS)\n\n// How many hours are between 2 July 2014 06:50:00 and 2 July 2014 19:00:00?\nmodule.exports = differenceInHours(\n new Date(2014, 6, 2, 19, 0),\n new Date(2014, 6, 2, 6, 50)\n)\n// => 12\n"
},
{
"path": "src/content/date-fns/04-hour/endOfHour/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/endOfHour\nimport { endOfHour } from 'date-fns'\n\n// The end of an hour for 2 September 2014 11:55:00:\nmodule.exports = endOfHour(new Date(2014, 8, 2, 11, 55))\n// => Tue Sep 02 2014 11:59:59.999\n"
},
{
"path": "src/content/date-fns/04-hour/endOfHour/notes.md",
"content": "Return the end of an hour for the given date."
},
{
"path": "src/content/date-fns/04-hour/endOfHour/spec.js",
"content": "const expected = new Date(2014, 8, 2, 11, 59, 59, 999)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('endOfHour', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/endOfHour/vanilla.js",
"content": "const HOUR_IN_MS = 1000 * 60 * 60\n\nconst endOfHour = date =>\n new Date(Math.ceil(date.getTime() / HOUR_IN_MS) * HOUR_IN_MS - 1)\n\n// The end of an hour for 2 September 2014 11:55:00:\nmodule.exports = endOfHour(new Date(2014, 8, 2, 11, 55))\n// => Tue Sep 02 2014 11:59:59.999\n"
},
{
"path": "src/content/date-fns/04-hour/getHours/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getHours\nimport { getHours } from 'date-fns'\n\n// Get the hours of 29 February 2012 11:45:00:\nmodule.exports = getHours(new Date(2012, 1, 29, 11, 45))\n// => 11\n"
},
{
"path": "src/content/date-fns/04-hour/getHours/notes.md",
"content": "Get the hours of the given date."
},
{
"path": "src/content/date-fns/04-hour/getHours/spec.js",
"content": "const expected = 11\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getHours', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/getHours/vanilla.js",
"content": "const getHours = date => date.getHours()\n\n// Get the hours of 29 February 2012 11:45:00:\nmodule.exports = getHours(new Date(2012, 1, 29, 11, 45))\n// => 11\n"
},
{
"path": "src/content/date-fns/04-hour/isSameHour/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSameHour\nimport { isSameHour } from 'date-fns'\n\n// Are 4 September 2014 06:00:00 and 4 September 06:30:00 in the same hour?\nmodule.exports = isSameHour(\n new Date(2014, 8, 4, 6, 0),\n new Date(2014, 8, 4, 6, 30)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/04-hour/isSameHour/notes.md",
"content": "Are the given dates in the same hour?"
},
{
"path": "src/content/date-fns/04-hour/isSameHour/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSameHour', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/isSameHour/vanilla.js",
"content": "const HOUR_IN_MS = 1000 * 60 * 60\n\nconst isSameHour = (dateA, dateB) =>\n Math.abs(dateA - dateB) < HOUR_IN_MS && dateA.getHours() === dateB.getHours()\n\n// Are 4 September 2014 06:00:00 and 4 September 06:30:00 in the same hour?\nmodule.exports = isSameHour(\n new Date(2014, 8, 4, 6, 0),\n new Date(2014, 8, 4, 6, 30)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/04-hour/isThisHour/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isThisHour\nimport { isThisHour } from 'date-fns'\n\n// If now is 25 September 2014 18:30:15.500,\n// is 25 September 2014 18:00:00 in this hour?\nmodule.exports = isThisHour(new Date(2014, 8, 25, 18))\n// => true\n"
},
{
"path": "src/content/date-fns/04-hour/isThisHour/notes.md",
"content": "Is the given date in the same hour as the current date?"
},
{
"path": "src/content/date-fns/04-hour/isThisHour/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isThisHour', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/isThisHour/vanilla.js",
"content": "const HOUR_IN_MS = 1000 * 60 * 60\n\nconst isThisHour = (dateA, dateB = new Date()) =>\n Math.abs(dateA - dateB) < HOUR_IN_MS && dateA.getHours() === dateB.getHours()\n\n// If now is 25 September 2014 18:30:15.500,\n// is 25 September 2014 18:00:00 in this hour?\nmodule.exports = isThisHour(new Date(2014, 8, 25, 18))\n// => true\n"
},
{
"path": "src/content/date-fns/04-hour/setHours/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setHours\nimport { setHours } from 'date-fns'\n\n// Set 4 hours to 1 September 2014 11:30:00:\nmodule.exports = setHours(new Date(2014, 8, 1, 11, 30), 4)\n// => Mon Sep 01 2014 04:30:00\n"
},
{
"path": "src/content/date-fns/04-hour/setHours/notes.md",
"content": "Set the hours to the given date."
},
{
"path": "src/content/date-fns/04-hour/setHours/spec.js",
"content": "const expected = new Date(2014, 8, 1, 4, 30)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setHours', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/setHours/vanilla.js",
"content": "const setHours = (date, h) => {\n date.setHours(h)\n return date\n}\n\n// Set 4 hours to 1 September 2014 11:30:00:\nmodule.exports = setHours(new Date(2014, 8, 1, 11, 30), 4)\n// => Mon Sep 01 2014 04:30:00\n"
},
{
"path": "src/content/date-fns/04-hour/startOfHour/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/startOfHour\nimport { startOfHour } from 'date-fns'\n\n// The start of an hour for 2 September 2014 11:55:00:\nmodule.exports = startOfHour(new Date(2014, 8, 2, 11, 55))\n// => Tue Sep 02 2014 11:00:00\n"
},
{
"path": "src/content/date-fns/04-hour/startOfHour/notes.md",
"content": "Return the start of an hour for the given date."
},
{
"path": "src/content/date-fns/04-hour/startOfHour/spec.js",
"content": "const expected = new Date(2014, 8, 2, 11)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('startOfHour', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/startOfHour/vanilla.js",
"content": "const HOUR_IN_MS = 1000 * 60 * 60\n\nconst startOfHour = date => new Date(Math.floor(date / HOUR_IN_MS) * HOUR_IN_MS)\n\n// The start of an hour for 2 September 2014 11:55:00:\nmodule.exports = startOfHour(new Date(2014, 8, 2, 11, 55))\n// => Tue Sep 02 2014 11:00:00\n"
},
{
"path": "src/content/date-fns/04-hour/subHours/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subHours\nimport { subHours } from 'date-fns'\n\n// Subtract 2 hours from 11 July 2014 01:00:00:\nmodule.exports = subHours(new Date(2014, 6, 11, 1, 0), 2)\n// => Thu Jul 10 2014 23:00:00\n"
},
{
"path": "src/content/date-fns/04-hour/subHours/notes.md",
"content": "Subtract the specified number of hours from the given date."
},
{
"path": "src/content/date-fns/04-hour/subHours/spec.js",
"content": "const expected = new Date(2014, 6, 10, 23, 0)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subHours', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/04-hour/subHours/vanilla.js",
"content": "const subHours = (date, h) => {\n date.setHours(date.getHours() - h)\n return date\n}\n\n// Subtract 2 hours from 11 July 2014 01:00:00:\nmodule.exports = subHours(new Date(2014, 6, 11, 1, 0), 2)\n// => Thu Jul 10 2014 23:00:00\n"
},
{
"path": "src/content/date-fns/05-day/addDays/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addDays\nimport { addDays } from 'date-fns'\n\n// Add 10 days to 1 September 2014:\nmodule.exports = addDays(new Date(2014, 8, 1), 10)\n// => Thu Sep 11 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/05-day/addDays/notes.md",
"content": "Add the specified number of days to the given date."
},
{
"path": "src/content/date-fns/05-day/addDays/spec.js",
"content": "const expected = new Date(2014, 8, 11)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addDays', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/addDays/vanilla.js",
"content": "const addDays = (date, d) => {\n date.setDate(date.getDate() + d)\n return date\n}\n\n// Add 10 days to 1 September 2014:\nmodule.exports = addDays(new Date(2014, 8, 1), 10)\n// => Thu Sep 11 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/05-day/differenceInDays/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInDays\nimport { differenceInDays } from 'date-fns'\n\n// How many full days are between\n// 2 July 2011 23:00:00 and 2 July 2012 00:00:00?\nexports.year = differenceInDays(\n new Date(2012, 6, 2, 0, 0),\n new Date(2011, 6, 2, 23, 0)\n)\n// => 365\n\n// How many full days are between\n// 2 July 2011 23:59:00 and 3 July 2011 00:01:00?\nexports.none = differenceInDays(\n new Date(2011, 6, 3, 0, 1),\n new Date(2011, 6, 2, 23, 59)\n)\n// => 0\n\n// How many full days are between\n// 1 March 2020 0:00 and 1 June 2020 0:00 ?\nexports.nintytwo = differenceInDays(new Date(2020, 5, 1), new Date(2020, 2, 1))\n// => 92\n"
},
{
"path": "src/content/date-fns/05-day/differenceInDays/notes.md",
"content": "Get the number of full days between the given dates."
},
{
"path": "src/content/date-fns/05-day/differenceInDays/spec.js",
"content": "const expected = {\n year: 365,\n none: 0,\n nintytwo: 92,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInDays', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/differenceInDays/vanilla.js",
"content": "const differenceInDays = (dateA, dateB) =>\n Math.round((dateA - dateB) / (1000 * 60 * 60 * 24))\n\n// How many full days are between\n// 2 July 2011 23:00:00 and 2 July 2012 00:00:00?\nexports.year = differenceInDays(\n new Date(2012, 6, 2, 0, 0),\n new Date(2011, 6, 2, 23, 0)\n)\n// => 365\n\n// How many full days are between\n// 2 July 2011 23:59:00 and 3 July 2011 00:01:00?\nexports.none = differenceInDays(\n new Date(2011, 6, 3, 0, 1),\n new Date(2011, 6, 2, 23, 59)\n)\n// => 0\n\n// How many full days are between\n// 1 March 2020 0:00 and 1 June 2020 0:00 ?\nexports.nintytwo = differenceInDays(new Date(2020, 5, 1), new Date(2020, 2, 1))\n// => 92\n"
},
{
"path": "src/content/date-fns/05-day/getDate/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getDate\nimport { getDate } from 'date-fns'\n\n// Which day of the month is 29 February 2012?\nmodule.exports = getDate(new Date(2012, 1, 29))\n// => 29\n"
},
{
"path": "src/content/date-fns/05-day/getDate/notes.md",
"content": "Get the day of the month of the given date."
},
{
"path": "src/content/date-fns/05-day/getDate/spec.js",
"content": "const expected = 29\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getDate', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/getDate/vanilla.js",
"content": "const getDate = date => date.getDate()\n\n// Which day of the month is 29 February 2012?\nmodule.exports = getDate(new Date(2012, 1, 29))\n// => 29\n"
},
{
"path": "src/content/date-fns/05-day/getDayOfYear/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getDayOfYear\nimport { getDayOfYear } from 'date-fns'\n\n// Which day of the year is 2 July 2014?\nmodule.exports = getDayOfYear(new Date(2014, 6, 2))\n// => 183\n"
},
{
"path": "src/content/date-fns/05-day/getDayOfYear/notes.md",
"content": "Get the day of the year of the given date."
},
{
"path": "src/content/date-fns/05-day/getDayOfYear/spec.js",
"content": "const expected = 183\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getDayOfYear', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/getDayOfYear/vanilla.js",
"content": "const DAY_IN_MS = 1000 * 60 * 60 * 24\nconst getDayOfYear = date =>\n (Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()) -\n Date.UTC(date.getFullYear(), 0, 0)) /\n DAY_IN_MS\n\n// Which day of the year is 2 July 2014?\nmodule.exports = getDayOfYear(new Date(2014, 6, 2))\n// => 183\n"
},
{
"path": "src/content/date-fns/05-day/isSameDay/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSameDay\nimport { isSameDay } from 'date-fns'\n\n// Are 4 September 06:00:00 and 4 September 18:00:00 in the same day?\nmodule.exports = isSameDay(\n new Date(2014, 8, 4, 6, 0),\n new Date(2014, 8, 4, 18, 0)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isSameDay/notes.md",
"content": "Are the given dates in the same day?"
},
{
"path": "src/content/date-fns/05-day/isSameDay/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSameDay', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/isSameDay/vanilla.js",
"content": "const isSameDay = (dateA, dateB) =>\n dateA.toLocaleDateString() === dateB.toLocaleDateString()\n\n// Are 4 September 06:00:00 and 4 September 18:00:00 in the same day?\nmodule.exports = isSameDay(\n new Date(2014, 8, 4, 6, 0),\n new Date(2014, 8, 4, 18, 0)\n)\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isToday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isToday\nimport { isToday } from 'date-fns'\n\n// If today is 25 September 2014, is 25 September 14:00 today?\nmodule.exports = isToday(new Date(2014, 8, 25, 14, 0))\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isToday/notes.md",
"content": "Is the given date today?"
},
{
"path": "src/content/date-fns/05-day/isToday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isToday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/isToday/vanilla.js",
"content": "const isToday = date => {\n const yesterday = new Date()\n return yesterday.toLocaleDateString() === date.toLocaleDateString()\n}\n\n// If today is 25 September 2014, is 25 September 14:00 today?\nmodule.exports = isToday(new Date(2014, 8, 25, 14, 0))\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isTomorrow/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isTomorrow\nimport { isTomorrow } from 'date-fns'\n\n// If today is 25 September 2014, is 24 September tomorrow?\nmodule.exports = isTomorrow(new Date(2014, 8, 26, 14, 0))\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isTomorrow/notes.md",
"content": "Is the given date tomorrow?"
},
{
"path": "src/content/date-fns/05-day/isTomorrow/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isTomorrow', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/isTomorrow/vanilla.js",
"content": "const isTomorrow = date => {\n const yesterday = new Date()\n yesterday.setDate(yesterday.getDate() + 1)\n return yesterday.toLocaleDateString() === date.toLocaleDateString()\n}\n\n// If today is 25 September 2014, is 24 September tomorrow?\nmodule.exports = isTomorrow(new Date(2014, 8, 26, 14, 0))\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isYesterday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isYesterday\nimport { isYesterday } from 'date-fns'\n\n// If today is 25 September 2014, is 24 September yesterday?\nmodule.exports = isYesterday(new Date(2014, 8, 24, 14, 0))\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/isYesterday/notes.md",
"content": "Is the given date yesterday?"
},
{
"path": "src/content/date-fns/05-day/isYesterday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isYesterday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/isYesterday/vanilla.js",
"content": "const isYesterday = date => {\n const yesterday = new Date()\n yesterday.setDate(yesterday.getDate() - 1)\n return yesterday.toLocaleDateString() === date.toLocaleDateString()\n}\n\n// If today is 25 September 2014, is 24 September yesterday?\nmodule.exports = isYesterday(new Date(2014, 8, 24, 14, 0))\n// => true\n"
},
{
"path": "src/content/date-fns/05-day/setDate/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setDate\nimport { setDate } from 'date-fns'\n\n// Set the 30th day of the month to 1 September 2014:\nmodule.exports = setDate(new Date(2014, 8, 1), 30)\n// => Tue Sep 30 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/05-day/setDate/notes.md",
"content": "Set the day of the month to the given date."
},
{
"path": "src/content/date-fns/05-day/setDate/spec.js",
"content": "const expected = new Date(2014, 8, 30)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setDate', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/setDate/vanilla.js",
"content": "const setDate = (date, d) => {\n date.setDate(d)\n return date\n}\n\n// Set the 30th day of the month to 1 September 2014:\nmodule.exports = setDate(new Date(2014, 8, 1), 30)\n// => Tue Sep 30 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/05-day/subDays/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subDays\nimport { subDays } from 'date-fns'\n\n// Subtract 10 days from 1 September 2014:\nmodule.exports = subDays(new Date(2014, 8, 1), 10)\n// => Fri Aug 22 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/05-day/subDays/notes.md",
"content": "Subtract the specified number of days from the given date."
},
{
"path": "src/content/date-fns/05-day/subDays/spec.js",
"content": "const expected = new Date(2014, 7, 22)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subDays', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/05-day/subDays/vanilla.js",
"content": "const subDays = (date, d) => {\n date.setDate(date.getDate() - d)\n return date\n}\n\n// Subtract 10 days from 1 September 2014:\nmodule.exports = subDays(new Date(2014, 8, 1), 10)\n// => Fri Aug 22 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/06-weekday/getDay/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getDay\nimport { getDay } from 'date-fns'\n\n// Which day of the week is 29 February 2012?\nexports.randomday = getDay(new Date(2012, 1, 29))\n// => 3\n\n// Which day of the week is 26 February 2012?\nexports.sunday = getDay(new Date(2012, 1, 26))\n// => 0\n"
},
{
"path": "src/content/date-fns/06-weekday/getDay/notes.md",
"content": "Get the day of the week of the given date."
},
{
"path": "src/content/date-fns/06-weekday/getDay/spec.js",
"content": "const expected = {\n randomday: 3,\n sunday: 0,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getDay', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/getDay/vanilla.js",
"content": "const getDay = date => date.getDay()\n\n// Which day of the week is 29 February 2012?\nexports.randomday = getDay(new Date(2012, 1, 29))\n// => 3\n\n// Which day of the week is 26 February 2012?\nexports.sunday = getDay(new Date(2012, 1, 26))\n// => 0\n"
},
{
"path": "src/content/date-fns/06-weekday/getISODay/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getISODay\nimport { getISODay } from 'date-fns'\n\n// Which day of the week is 29 February 2012?\nexports.day = getISODay(new Date(2012, 1, 29))\n// => 3\n\n// Which day of the week is 26 February 2012?\nexports.sunday = getISODay(new Date(2012, 1, 26))\n// => 7\n"
},
{
"path": "src/content/date-fns/06-weekday/getISODay/notes.md",
"content": "Get the day of the ISO week of the given date."
},
{
"path": "src/content/date-fns/06-weekday/getISODay/spec.js",
"content": "const expected = {\n day: 3,\n sunday: 7,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getISODay', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/getISODay/vanilla.js",
"content": "const getISODay = date => date.getDay() || 7\n\n// Which day of the week is 29 February 2012?\nexports.day = getISODay(new Date(2012, 1, 29))\n// => 3\n\n// Which day of the week is 26 February 2012?\nexports.sunday = getISODay(new Date(2012, 1, 26))\n// => 7\n"
},
{
"path": "src/content/date-fns/06-weekday/isFriday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isFriday\nimport { isFriday } from 'date-fns'\n\n// Is 26 September 2014 Friday?\nmodule.exports = isFriday(new Date(2014, 8, 26))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isFriday/notes.md",
"content": "Is the given date Friday?"
},
{
"path": "src/content/date-fns/06-weekday/isFriday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isFriday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isFriday/vanilla.js",
"content": "const isFriday = date => date.getDay() === 5\n\n// Is 26 September 2014 Friday?\nmodule.exports = isFriday(new Date(2014, 8, 26))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isMonday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isMonday\nimport { isMonday } from 'date-fns'\n\n// Is 22 September 2014 Monday?\nmodule.exports = isMonday(new Date(2014, 8, 22))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isMonday/notes.md",
"content": "Is the given date Monday? (you could also check [Mondays](https://www.npmjs.com/package/mondays))\n"
},
{
"path": "src/content/date-fns/06-weekday/isMonday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isMonday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isMonday/vanilla.js",
"content": "const isMonday = date => date.getDay() === 1\n\n// Is 22 September 2014 Monday?\nmodule.exports = isMonday(new Date(2014, 8, 22))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isSaturday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSaturday\nimport { isSaturday } from 'date-fns'\n\n// Is 27 September 2014 Saturday?\nmodule.exports = isSaturday(new Date(2014, 8, 27))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isSaturday/notes.md",
"content": "Is the given date Saturday?"
},
{
"path": "src/content/date-fns/06-weekday/isSaturday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSaturday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isSaturday/vanilla.js",
"content": "const isSaturday = date => date.getDay() === 6\n\n// Is 27 September 2014 Saturday?\nmodule.exports = isSaturday(new Date(2014, 8, 27))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isSunday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSunday\nimport { isSunday } from 'date-fns'\n\n// Is 21 September 2014 Sunday?\nmodule.exports = isSunday(new Date(2014, 8, 21))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isSunday/notes.md",
"content": "Is the given date Sunday?"
},
{
"path": "src/content/date-fns/06-weekday/isSunday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSunday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isSunday/vanilla.js",
"content": "const isSunday = date => date.getDay() === 0\n\n// Is 21 September 2014 Sunday?\nmodule.exports = isSunday(new Date(2014, 8, 21))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isThursday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isThursday\nimport { isThursday } from 'date-fns'\n\n// Is 25 September 2014 Thursday?\nmodule.exports = isThursday(new Date(2014, 8, 25))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isThursday/notes.md",
"content": "Is the given date Thursday?"
},
{
"path": "src/content/date-fns/06-weekday/isThursday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isThursday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isThursday/vanilla.js",
"content": "const isThursday = date => date.getDay() === 4\n\n// Is 25 September 2014 Thursday?\nmodule.exports = isThursday(new Date(2014, 8, 25))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isTuesday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isTuesday\nimport { isTuesday } from 'date-fns'\n\n// Is 23 September 2014 Tuesday?\nmodule.exports = isTuesday(new Date(2014, 8, 23))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isTuesday/notes.md",
"content": "Is the given date Tuesday?"
},
{
"path": "src/content/date-fns/06-weekday/isTuesday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isTuesday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isTuesday/vanilla.js",
"content": "const isTuesday = date => date.getDay() === 2\n\n// Is 23 September 2014 Tuesday?\nmodule.exports = isTuesday(new Date(2014, 8, 23))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isWednesday/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isWednesday\nimport { isWednesday } from 'date-fns'\n\n// Is 24 September 2014 Wednesday?\nmodule.exports = isWednesday(new Date(2014, 8, 24))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isWednesday/notes.md",
"content": "Is the given date Wednesday?"
},
{
"path": "src/content/date-fns/06-weekday/isWednesday/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isWednesday', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isWednesday/vanilla.js",
"content": "const isWednesday = date => date.getDay() === 3\n\n// Is 24 September 2014 Wednesday?\nmodule.exports = isWednesday(new Date(2014, 8, 24))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isWeekend/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isWeekend\nimport { isWeekend } from 'date-fns'\n\n// Does 5 October 2014 fall on a weekend?\nmodule.exports = isWeekend(new Date(2014, 9, 5))\n// => true\n"
},
{
"path": "src/content/date-fns/06-weekday/isWeekend/notes.md",
"content": "Does the given date fall on a weekend?"
},
{
"path": "src/content/date-fns/06-weekday/isWeekend/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isWeekend', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/06-weekday/isWeekend/vanilla.js",
"content": "const isWeekend = date => [0, 6].includes(date.getDay())\n\n// Does 5 October 2014 fall on a weekend?\nmodule.exports = isWeekend(new Date(2014, 9, 5))\n// => true\n"
},
{
"path": "src/content/date-fns/07-week/addWeeks/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addWeeks\nimport { addWeeks } from 'date-fns'\n\n// Add 4 weeks to 1 September 2014:\nmodule.exports = addWeeks(new Date(2014, 8, 1), 4)\n// => Mon Sep 29 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/07-week/addWeeks/notes.md",
"content": "Add the specified number of weeks to the given date."
},
{
"path": "src/content/date-fns/07-week/addWeeks/spec.js",
"content": "const expected = new Date(2014, 8, 29)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addWeeks', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/07-week/addWeeks/vanilla.js",
"content": "const addWeeks = (date, w) => {\n date.setDate(date.getDate() + w * 7)\n return date\n}\n\n// Add 4 weeks to 1 September 2014:\nmodule.exports = addWeeks(new Date(2014, 8, 1), 4)\n// => Mon Sep 29 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/07-week/subWeeks/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subWeeks\nimport { subWeeks } from 'date-fns'\n\n// Subtract 4 weeks from 1 September 2014:\nmodule.exports = subWeeks(new Date(2014, 8, 1), 4)\n// => Mon Aug 04 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/07-week/subWeeks/notes.md",
"content": "Subtract the specified number of weeks from the given date."
},
{
"path": "src/content/date-fns/07-week/subWeeks/spec.js",
"content": "const expected = new Date(2014, 7, 4)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subWeeks', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/07-week/subWeeks/vanilla.js",
"content": "const subWeeks = (date, w) => {\n date.setDate(date.getDate() - w * 7)\n return date\n}\n\n// Subtract 4 weeks from 1 September 2014:\nmodule.exports = subWeeks(new Date(2014, 8, 1), 4)\n// => Mon Aug 04 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/08-month/addMonths/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addMonths\nimport { addMonths } from 'date-fns'\n\n// Add 5 months to 1 September 2014:\nmodule.exports = addMonths(new Date(2014, 8, 1), 5)\n// => Sun Feb 01 2015 00:00:00\n"
},
{
"path": "src/content/date-fns/08-month/addMonths/notes.md",
"content": "Add the specified number of months to the given date."
},
{
"path": "src/content/date-fns/08-month/addMonths/spec.js",
"content": "const expected = new Date(2015, 1, 1)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addMonths', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/addMonths/vanilla.js",
"content": "const addMonths = (date, m) => {\n date.setMonth(date.getMonth() + m)\n return date\n}\n\n// Add 5 months to 1 September 2014:\nmodule.exports = addMonths(new Date(2014, 8, 1), 5)\n// => Sun Feb 01 2015 00:00:00\n"
},
{
"path": "src/content/date-fns/08-month/getMonth/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getMonth\nimport { getMonth } from 'date-fns'\n\n// Which month is 29 February 2012?\nmodule.exports = getMonth(new Date(2012, 1, 29))\n// => 1\n"
},
{
"path": "src/content/date-fns/08-month/getMonth/notes.md",
"content": "Get the month of the given date."
},
{
"path": "src/content/date-fns/08-month/getMonth/spec.js",
"content": "const expected = 1\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/getMonth/vanilla.js",
"content": "const getMonth = date => date.getMonth()\n\n// Which month is 29 February 2012?\nmodule.exports = getMonth(new Date(2012, 1, 29))\n// => 1\n"
},
{
"path": "src/content/date-fns/08-month/isFirstDayOfMonth/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isFirstDayOfMonth\nimport { isFirstDayOfMonth } from 'date-fns'\n\n// Is 1 September 2014 the first day of a month?\nmodule.exports = isFirstDayOfMonth(new Date(2014, 8, 1))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isFirstDayOfMonth/notes.md",
"content": "Is the given date the first day of a month?"
},
{
"path": "src/content/date-fns/08-month/isFirstDayOfMonth/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isFirstDayOfMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/isFirstDayOfMonth/vanilla.js",
"content": "const isFirstDayOfMonth = date => date.getDate() === 1\n\n// Is 1 September 2014 the first day of a month?\nmodule.exports = isFirstDayOfMonth(new Date(2014, 8, 1))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isLastDayOfMonth/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isLastDayOfMonth\nimport { isLastDayOfMonth } from 'date-fns'\n\n// Is 28 February 2014 the last day of a month?\nmodule.exports = isLastDayOfMonth(new Date(2014, 1, 28))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isLastDayOfMonth/notes.md",
"content": "Is the given date the last day of a month?"
},
{
"path": "src/content/date-fns/08-month/isLastDayOfMonth/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isLastDayOfMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/isLastDayOfMonth/vanilla.js",
"content": "const isLastDayOfMonth = date => {\n const dateClone = new Date(date.getTime())\n dateClone.setDate(date.getDate() + 1)\n return date.getMonth() === dateClone.getMonth() - 1\n}\n\n// Is 28 February 2014 the last day of a month?\nmodule.exports = isLastDayOfMonth(new Date(2014, 1, 28))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isSameMonth/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSameMonth\nimport { isSameMonth } from 'date-fns'\n\n// Are 2 September 2014 and 25 September 2014 in the same month?\nmodule.exports = isSameMonth(new Date(2014, 8, 2), new Date(2014, 8, 25))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isSameMonth/notes.md",
"content": "Are the given dates in the same month?"
},
{
"path": "src/content/date-fns/08-month/isSameMonth/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSameMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/isSameMonth/vanilla.js",
"content": "const isSameMonth = (dateA, dateB) =>\n dateA.getYear() === dateB.getYear() && dateA.getMonth() === dateB.getMonth()\n\n// Are 2 September 2014 and 25 September 2014 in the same month?\nmodule.exports = isSameMonth(new Date(2014, 8, 2), new Date(2014, 8, 25))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isThisMonth/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isThisMonth\nimport { isThisMonth } from 'date-fns'\n\n// If today is 25 September 2014, is 15 September 2014 in this month?\nmodule.exports = isThisMonth(new Date(2014, 8, 15))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/isThisMonth/notes.md",
"content": "Is the given date in the same month as the current date?"
},
{
"path": "src/content/date-fns/08-month/isThisMonth/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isThisMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/isThisMonth/vanilla.js",
"content": "const isThisMonth = date => {\n const now = new Date()\n return date.getYear() === now.getYear() && date.getMonth() === now.getMonth()\n}\n\n// If today is 25 September 2014, is 15 September 2014 in this month?\nmodule.exports = isThisMonth(new Date(2014, 8, 15))\n// => true\n"
},
{
"path": "src/content/date-fns/08-month/lastDayOfMonth/date-fns.js",
"content": "// https://date-fns.org/v2.29.3/docs/lastDayOfMonth\nimport { lastDayOfMonth } from 'date-fns'\n\n// Get the last day of a month.\nmodule.exports = lastDayOfMonth(new Date(2014, 1, 25)).toDateString()\n// => Fri Feb 28 2014\n"
},
{
"path": "src/content/date-fns/08-month/lastDayOfMonth/notes.md",
"content": "Get the last day of a month from date."
},
{
"path": "src/content/date-fns/08-month/lastDayOfMonth/spec.js",
"content": "const expected = 'Fri Feb 28 2014'\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('lastDayOfMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/lastDayOfMonth/vanilla.js",
"content": "function lastDayOfMonth(date) {\n const dateClone = new Date(date.getTime())\n const month = dateClone.getMonth()\n dateClone.setDate(1)\n dateClone.setMonth(month + 1)\n dateClone.setDate(0)\n\n return dateClone\n}\n\n// Get the last day of a month.\nmodule.exports = lastDayOfMonth(new Date(2014, 1, 25)).toDateString()\n// => Fri Feb 28 2014\n"
},
{
"path": "src/content/date-fns/08-month/setMonth/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setMonth\nimport { setMonth } from 'date-fns'\n\n// Set February to 1 September 2014:\nmodule.exports = setMonth(new Date(2014, 8, 1), 1)\n// => Sat Feb 01 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/08-month/setMonth/notes.md",
"content": "Set the month to the given date."
},
{
"path": "src/content/date-fns/08-month/setMonth/spec.js",
"content": "const expected = new Date(2014, 1, 1)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setMonth', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/setMonth/vanilla.js",
"content": "const setMonth = (date, m) => {\n date.setMonth(m)\n return date\n}\n\n// Set February to 1 September 2014:\nmodule.exports = setMonth(new Date(2014, 8, 1), 1)\n// => Sat Feb 01 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/08-month/subMonths/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/subMonths\nimport { subMonths } from 'date-fns'\n\n// Subtract 5 months from 1 February 2015:\nmodule.exports = subMonths(new Date(2015, 1, 1), 5)\n// => Mon Sep 01 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/08-month/subMonths/notes.md",
"content": "Subtract the specified number of months from the given date."
},
{
"path": "src/content/date-fns/08-month/subMonths/spec.js",
"content": "const expected = new Date(2014, 8, 1)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('subMonths', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/08-month/subMonths/vanilla.js",
"content": "const subMonths = (date, m) => {\n date.setMonth(date.getMonth() - m)\n return date\n}\n\n// Subtract 5 months from 1 February 2015:\nmodule.exports = subMonths(new Date(2015, 1, 1), 5)\n// => Mon Sep 01 2014 00:00:00\n"
},
{
"path": "src/content/date-fns/09-year/addYears/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/addYears\nimport { addYears } from 'date-fns'\n\n// Add 5 years to 1 September 2014:\nmodule.exports = addYears(new Date(2014, 8, 1), 5)\n// => Sun Sep 01 2019 00:00:00\n"
},
{
"path": "src/content/date-fns/09-year/addYears/notes.md",
"content": "Add the specified number of years to the given date."
},
{
"path": "src/content/date-fns/09-year/addYears/spec.js",
"content": "const expected = new Date(2019, 8, 1)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('addYears', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/addYears/vanilla.js",
"content": "const addYears = (date, yearsToAdd) => {\n date.setFullYear(date.getFullYear() + yearsToAdd)\n return date\n}\n\n// Add 5 years to 1 September 2014:\nmodule.exports = addYears(new Date(2014, 8, 1), 5)\n// => Sun Sep 01 2019 00:00:00\n"
},
{
"path": "src/content/date-fns/09-year/differenceInCalendarYears/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInCalendarYears\nimport { differenceInCalendarYears } from 'date-fns'\n\n// How many calendar years are between 31 December 2013 and 11 February 2015?\nmodule.exports = differenceInCalendarYears(\n new Date(2015, 1, 11),\n new Date(2013, 11, 31)\n)\n// => 2\n"
},
{
"path": "src/content/date-fns/09-year/differenceInCalendarYears/notes.md",
"content": "Get the number of calendar years between the given dates."
},
{
"path": "src/content/date-fns/09-year/differenceInCalendarYears/spec.js",
"content": "const expected = 2\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInCalendarYears', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/differenceInCalendarYears/vanilla.js",
"content": "const differenceInCalendarYears = (dateA, dateB) =>\n Math.abs(dateA.getFullYear() - dateB.getFullYear())\n\n// How many calendar years are between 31 December 2013 and 11 February 2015?\nmodule.exports = differenceInCalendarYears(\n new Date(2015, 1, 11),\n new Date(2013, 11, 31)\n)\n// => 2\n"
},
{
"path": "src/content/date-fns/09-year/differenceInYears/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/differenceInYears\nimport { differenceInYears } from 'date-fns'\n\n// How many full years are between 31 December 2013 and 11 February 2015?\nmodule.exports = differenceInYears(\n new Date(2015, 1, 11),\n new Date(2013, 11, 31)\n)\n// => 1\n"
},
{
"path": "src/content/date-fns/09-year/differenceInYears/notes.md",
"content": "Get the number of full years between the given dates."
},
{
"path": "src/content/date-fns/09-year/differenceInYears/spec.js",
"content": "const expected = 1\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('differenceInYears', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/differenceInYears/vanilla.js",
"content": "const YEAR_IN_MS = 1000 * 60 * 60 * 24 * 365\n\nconst differenceInYears = (dateA, dateB) =>\n Math.floor((dateA - dateB) / YEAR_IN_MS)\n\n// How many full years are between 31 December 2013 and 11 February 2015?\nmodule.exports = differenceInYears(\n new Date(2015, 1, 11),\n new Date(2013, 11, 31)\n)\n// => 1\n"
},
{
"path": "src/content/date-fns/09-year/getYear/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/getYear\nimport { getYear } from 'date-fns'\n\n// Which year is 2 July 2014?\nmodule.exports = getYear(new Date(2014, 6, 2))\n// => 2014\n"
},
{
"path": "src/content/date-fns/09-year/getYear/notes.md",
"content": "Get the year of the given date."
},
{
"path": "src/content/date-fns/09-year/getYear/spec.js",
"content": "const expected = 2014\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('getYear', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/getYear/vanilla.js",
"content": "const getYear = date => date.getFullYear()\n\n// Which year is 2 July 2014?\nmodule.exports = getYear(new Date(2014, 6, 2))\n// => 2014\n"
},
{
"path": "src/content/date-fns/09-year/isLeapYear/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isLeapYear\nimport { isLeapYear } from 'date-fns'\n\n// Is 1 September 2012 in the leap year?\nexports.leap = isLeapYear(new Date(2012, 8, 1))\n// => true\n\n// Is 1 September 2013 in the leap year?\nexports.notLeap = isLeapYear(new Date(2013, 8, 1))\n// => false\n"
},
{
"path": "src/content/date-fns/09-year/isLeapYear/notes.md",
"content": "Is the given date in the leap year?"
},
{
"path": "src/content/date-fns/09-year/isLeapYear/spec.js",
"content": "const expected = {\n leap: true,\n notLeap: false,\n}\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isLeapYear', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/isLeapYear/vanilla.js",
"content": "const isLeapYear = date => {\n const year = date.getFullYear()\n return year % 100 === 0 ? year % 400 === 0 : year % 4 === 0\n}\n\n// Is 1 September 2012 in the leap year?\nexports.leap = isLeapYear(new Date(2012, 8, 1))\n// => true\n\n// Is 1 September 2013 in the leap year?\nexports.notLeap = isLeapYear(new Date(2013, 8, 1))\n// => false\n"
},
{
"path": "src/content/date-fns/09-year/isSameYear/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isSameYear\nimport { isSameYear } from 'date-fns'\n\n// Are 2 September 2014 and 25 September 2014 in the same year?\nmodule.exports = isSameYear(new Date(2014, 8, 2), new Date(2014, 8, 25))\n// => true\n"
},
{
"path": "src/content/date-fns/09-year/isSameYear/notes.md",
"content": "Are the given dates in the same year?"
},
{
"path": "src/content/date-fns/09-year/isSameYear/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isSameYear', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/isSameYear/vanilla.js",
"content": "const isSameYear = (dateA, dateB) => dateA.getFullYear() === dateB.getFullYear()\n\n// Are 2 September 2014 and 25 September 2014 in the same year?\nmodule.exports = isSameYear(new Date(2014, 8, 2), new Date(2014, 8, 25))\n// => true\n"
},
{
"path": "src/content/date-fns/09-year/isThisYear/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/isThisYear\nimport { isThisYear } from 'date-fns'\n\n// If today is 25 September 2014, is 2 July 2014 in this year?\nmodule.exports = isThisYear(new Date(2014, 6, 2))\n// => true\n"
},
{
"path": "src/content/date-fns/09-year/isThisYear/notes.md",
"content": "Is the given date in the same year as the current date?"
},
{
"path": "src/content/date-fns/09-year/isThisYear/spec.js",
"content": "const expected = true\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('isThisYear', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/isThisYear/vanilla.js",
"content": "const isThisYear = dateA => dateA.getFullYear() === new Date().getFullYear()\n\nmodule.exports = isThisYear(new Date())\n// => true\n"
},
{
"path": "src/content/date-fns/09-year/setYear/date-fns.js",
"content": "// https://date-fns.org/v3.5.0/docs/setYear\nimport { setYear } from 'date-fns'\n\n// Set year 2013 to 1 September 2014:\nmodule.exports = setYear(new Date(2014, 8, 1), 2013)\n// => Sun Sep 01 2013 00:00:00\n"
},
{
"path": "src/content/date-fns/09-year/setYear/notes.md",
"content": "Set the year to the given date."
},
{
"path": "src/content/date-fns/09-year/setYear/spec.js",
"content": "const expected = new Date(2013, 8, 1)\n\nconst datefns = require('./date-fns')\nconst plain = require('./vanilla')\n\ntest('setYear', () => {\n expect(datefns).toEqual(expected)\n expect(plain).toEqual(datefns)\n})\n"
},
{
"path": "src/content/date-fns/09-year/setYear/vanilla.js",
"content": "const setYear = (date, year) => {\n date.setFullYear(year)\n return date\n}\n\n// Set year 2013 to 1 September 2014:\nmodule.exports = setYear(new Date(2014, 8, 1), 2013)\n// => Sun Sep 01 2013 00:00:00\n"
},
{
"path": "src/content/date-fns-missing.md",
"content": "[<< back](/date-fns)\n\n# YOU MIGHT NOT NEED DATE-FNS\n\n## Generic Helpers\n\n[format](https://date-fns.org/v3.5.0/docs/format) \n[formatDistance](https://date-fns.org/v3.5.0/docs/formatDistance) \n[formatDistanceStrict](https://date-fns.org/v3.5.0/docs/formatDistanceStrict) \n[formatDistanceToNow](https://date-fns.org/v3.5.0/docs/formatDistanceToNow) \n[formatDistanceToNowStrict](https://date-fns.org/v3.5.0/docs/formatDistanceToNowStrict) \n[formatISO](https://date-fns.org/v3.5.0/docs/formatISO) \n[formatISO9075](https://date-fns.org/v3.5.0/docs/formatISO9075) \n[formatISODuration](https://date-fns.org/v3.5.0/docs/formatISODuration) \n[formatRFC3339](https://date-fns.org/v3.5.0/docs/formatRFC3339) \n[formatRFC7231](https://date-fns.org/v3.5.0/docs/formatRFC7231) \n[formatRelative](https://date-fns.org/v3.5.0/docs/formatRelative) \n[intervalToDuration](https://date-fns.org/v3.5.0/docs/intervalToDuration) \n[lightFormat](https://date-fns.org/v3.5.0/docs/lightFormat) \n[parse](https://date-fns.org/v3.5.0/docs/parse) \n[parseISO](https://date-fns.org/v3.5.0/docs/parseISO) \n[parseJSON](https://date-fns.org/v3.5.0/docs/parseJSON) \n[set](https://date-fns.org/v3.5.0/docs/set) \n[sub](https://date-fns.org/v3.5.0/docs/sub) \n[toDate](https://date-fns.org/v3.5.0/docs/toDate)\n\n## Interval Helpers\n\n[eachMonthOfInterval](https://date-fns.org/v3.5.0/docs/eachMonthOfInterval) \n[eachWeekOfInterval](https://date-fns.org/v3.5.0/docs/eachWeekOfInterval) \n[eachWeekendOfInterval](https://date-fns.org/v3.5.0/docs/eachWeekendOfInterval) \n[eachYearOfInterval](https://date-fns.org/v3.5.0/docs/eachYearOfInterval) \n[getOverlappingDaysInIntervals](https://date-fns.org/v3.5.0/docs/getOverlappingDaysInIntervals)\n\n## Day Helpers\n\n[addBusinessDays](https://date-fns.org/v3.5.0/docs/addBusinessDays) \n[differenceInBusinessDays](https://date-fns.org/v3.5.0/docs/differenceInBusinessDays) \n[differenceInCalendarDays](https://date-fns.org/v3.5.0/docs/differenceInCalendarDays) \n[endOfDay](https://date-fns.org/v3.5.0/docs/endOfDay) \n[endOfTomorrow](https://date-fns.org/v3.5.0/docs/endOfTomorrow) \n[endOfYesterday](https://date-fns.org/v3.5.0/docs/endOfYesterday) \n[setDayOfYear](https://date-fns.org/v3.5.0/docs/setDayOfYear) \n[startOfDay](https://date-fns.org/v3.5.0/docs/startOfDay) \n[startOfToday](https://date-fns.org/v3.5.0/docs/startOfToday) \n[startOfTomorrow](https://date-fns.org/v3.5.0/docs/startOfTomorrow) \n[startOfYesterday](https://date-fns.org/v3.5.0/docs/startOfYesterday) \n[subBusinessDays](https://date-fns.org/v3.5.0/docs/subBusinessDays)\n\n## Weekday Helpers\n\n[setDay](https://date-fns.org/v3.5.0/docs/setDay) \n[setISODay](https://date-fns.org/v3.5.0/docs/setISODay)\n\n## Week Helpers\n\n[addWeeks](https://date-fns.org/v3.5.0/docs/addWeeks) \n[differenceInCalendarWeeks](https://date-fns.org/v3.5.0/docs/differenceInCalendarWeeks) \n[differenceInWeeks](https://date-fns.org/v3.5.0/docs/differenceInWeeks) \n[endOfWeek](https://date-fns.org/v3.5.0/docs/endOfWeek) \n[getWeek](https://date-fns.org/v3.5.0/docs/getWeek) \n[getWeekOfMonth](https://date-fns.org/v3.5.0/docs/getWeekOfMonth) \n[getWeeksInMonth](https://date-fns.org/v3.5.0/docs/getWeeksInMonth) \n[isSameWeek](https://date-fns.org/v3.5.0/docs/isSameWeek) \n[isThisWeek](https://date-fns.org/v3.5.0/docs/isThisWeek) \n[lastDayOfWeek](https://date-fns.org/v3.5.0/docs/lastDayOfWeek) \n[setWeek](https://date-fns.org/v3.5.0/docs/setWeek) \n[startOfWeek](https://date-fns.org/v3.5.0/docs/startOfWeek) \n[subWeeks](https://date-fns.org/v3.5.0/docs/subWeeks)\n\n## ISO Week Helpers\n\n[differenceInCalendarISOWeeks](https://date-fns.org/v3.5.0/docs/differenceInCalendarISOWeeks) \n[endOfISOWeek](https://date-fns.org/v3.5.0/docs/endOfISOWeek) \n[getISOWeek](https://date-fns.org/v3.5.0/docs/getISOWeek) \n[isSameISOWeek](https://date-fns.org/v3.5.0/docs/isSameISOWeek) \n[isThisISOWeek](https://date-fns.org/v3.5.0/docs/isThisISOWeek) \n[lastDayOfISOWeek](https://date-fns.org/v3.5.0/docs/lastDayOfISOWeek) \n[setISOWeek](https://date-fns.org/v3.5.0/docs/setISOWeek) \n[startOfISOWeek](https://date-fns.org/v3.5.0/docs/startOfISOWeek)\n\n## Month Helpers\n\n[differenceInCalendarMonths](https://date-fns.org/v3.5.0/docs/differenceInCalendarMonths) \n[differenceInMonths](https://date-fns.org/v3.5.0/docs/differenceInMonths) \n[eachWeekendOfMonth](https://date-fns.org/v3.5.0/docs/eachWeekendOfMonth) \n[endOfMonth](https://date-fns.org/v3.5.0/docs/endOfMonth) \n[getDaysInMonth](https://date-fns.org/v3.5.0/docs/getDaysInMonth) \n[startOfMonth](https://date-fns.org/v3.5.0/docs/startOfMonth)\n\n## Quarter Helpers\n\n[addQuarters](https://date-fns.org/v3.5.0/docs/addQuarters) \n[differenceInCalendarQuarters](https://date-fns.org/v3.5.0/docs/differenceInCalendarQuarters) \n[differenceInQuarters](https://date-fns.org/v3.5.0/docs/differenceInQuarters) \n[endOfQuarter](https://date-fns.org/v3.5.0/docs/endOfQuarter) \n[getQuarter](https://date-fns.org/v3.5.0/docs/getQuarter) \n[isSameQuarter](https://date-fns.org/v3.5.0/docs/isSameQuarter) \n[isThisQuarter](https://date-fns.org/v3.5.0/docs/isThisQuarter) \n[lastDayOfQuarter](https://date-fns.org/v3.5.0/docs/lastDayOfQuarter) \n[setQuarter](https://date-fns.org/v3.5.0/docs/setQuarter) \n[startOfQuarter](https://date-fns.org/v3.5.0/docs/startOfQuarter) \n[subQuarters](https://date-fns.org/v3.5.0/docs/subQuarters)\n\n## Year Helpers\n\n[eachWeekendOfYear](https://date-fns.org/v3.5.0/docs/eachWeekendOfYear) \n[endOfYear](https://date-fns.org/v3.5.0/docs/endOfYear) \n[getDaysInYear](https://date-fns.org/v3.5.0/docs/getDaysInYear) \n[lastDayOfYear](https://date-fns.org/v3.5.0/docs/lastDayOfYear) \n[startOfYear](https://date-fns.org/v3.5.0/docs/startOfYear) \n[subYears](https://date-fns.org/v3.5.0/docs/subYears)\n\n## ISO Week-Numbering Year Helpers\n\n[addISOWeekYears](https://date-fns.org/v3.5.0/docs/addISOWeekYears) \n[differenceInCalendarISOWeekYears](https://date-fns.org/v3.5.0/docs/differenceInCalendarISOWeekYears) \n[differenceInISOWeekYears](https://date-fns.org/v3.5.0/docs/differenceInISOWeekYears) \n[endOfISOWeekYear](https://date-fns.org/v3.5.0/docs/endOfISOWeekYear) \n[getISOWeekYear](https://date-fns.org/v3.5.0/docs/getISOWeekYear) \n[getISOWeeksInYear](https://date-fns.org/v3.5.0/docs/getISOWeeksInYear) \n[isSameISOWeekYear](https://date-fns.org/v3.5.0/docs/isSameISOWeekYear) \n[lastDayOfISOWeekYear](https://date-fns.org/v3.5.0/docs/lastDayOfISOWeekYear) \n[setISOWeekYear](https://date-fns.org/v3.5.0/docs/setISOWeekYear) \n[startOfISOWeekYear](https://date-fns.org/v3.5.0/docs/startOfISOWeekYear) \n[subISOWeekYears](https://date-fns.org/v3.5.0/docs/subISOWeekYears)\n\n## Decade Helpers\n\n[endOfDecade](https://date-fns.org/v3.5.0/docs/endOfDecade) \n[getDecade](https://date-fns.org/v3.5.0/docs/getDecade) \n[lastDayOfDecade](https://date-fns.org/v3.5.0/docs/lastDayOfDecade) \n[startOfDecade](https://date-fns.org/v3.5.0/docs/startOfDecade)\n\n## Week-Numbering Year Helpers\n\n[getWeekYear](https://date-fns.org/v3.5.0/docs/getWeekYear) \n[setWeekYear](https://date-fns.org/v3.5.0/docs/setWeekYear) \n[startOfWeekYear](https://date-fns.org/v3.5.0/docs/startOfWeekYear)\n"
},
{
"path": "src/content/date-fns.md",
"content": "# YOU MIGHT NOT NEED **DATE-FNS**\n\nBut **you should use date-fns**.\n\nNot only it's a great library, battle tested and with a strong team, but also dates in javascript are a pain to work with, no point in dealing with them at a low level when there are such well crafted libraries around. **The goal of this project is _NOT_ to provide drop in replacements**, but to show how achieve similar functionalities in plain Javascript, to understand how things work behind the hood.\n\nBeing a learning platform, **some implementations have been simplified to make them more digestible, and they might miss edge cases** covered in the original version.\n\nOn top of that there are [a lot of methods yet to be ported](/date-fns/missing) including what's probably the most needed: [format](https://date-fns.org/v2.22.1/docs/format); please help [contributing on github](https://github.com/cedmax/youmightnotneed/blob/master/src/content/how-to-contribute.md).\n"
},
{
"path": "src/content/footer.md",
"content": "Curated by [cedmax](https://cedmax.com/) \nShare photo by Sydney Rae\n"
},
{
"path": "src/content/how-to-contribute.md",
"content": "# How To Contribute\n\nFeel free to open a PR on the [github repository](https://github.com/cedmax/youmightnotneed). \nIf you want to suggest any other framework or library please [open an issue](https://github.com/cedmax/youmightnotneed/issues/new), before the PR.\n\nPlease note we have a [Code of Conduct](https://github.com/cedmax/youmightnotneed/blob/master/CODE_OF_CONDUCT.md), make sure you follow it in all your interactions with the project.\n\nRun `yarn contributors` to add yourself to the Readme.md\n\n## How to add a method implementation\n\nIn order to add a method/section, run `yarn new` and follow the instructions.\n\n## File structure\n\nPlease follow the current file structure:\n\n```\nlodash.js\nnotes.md\nspec.js\nvanilla.js\n```\n\nPlease use the examples in the [lodash documentation](https://lodash.com/docs) for the lodash.js files, just add the appropriate import.\n\n##### ./lodash/array/chunk/lodash.js\n\n```javascript\nimport { chunk } from 'lodash'\n\nmodule.exports = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], 3)\n// => [['a', 'b', 'c'], ['d', 'e', 'f'], ['g']]\n```\n\nNote that both lodash and vanilla need to `module.exports` the result of their operations: it's hidden on the website, but necessary for testing purposes. If you have more example, feel free to use something like `exports.propertyNameThatMakesSense` and change the spec file accordingly.\n\n##### ./lodash/collection/find/spec.js\n\n```javascript\nconst expected = { user: 'barney', age: 36, active: true }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('find', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n```\n\nThe `notes.md` file is meant to contain external links relevant to the the vanilla implementation (where the implementation was found, if not original, mdn references or such).\n\n##### ./lodash/array/tail/notes.md\n\n```md\nDescription of the method\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Source](https://www.sitepoint.com/lodash-features-replace-es6/)\n```\n\n## How it make it work on local\n\n`yarn` to install dependencies. \n`yarn start` to launch the watch mode. \n`yarn test` to launch the tests. \n`yarn build` to create the built version in the `dist` folder.\n"
},
{
"path": "src/content/lodash/array/chunk/lodash.js",
"content": "// https://lodash.com/docs/#chunk\nimport { chunk } from 'lodash'\n\nexports.noSize = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'])\n// => [['a'], ['b'], ['c'], ['d'], ['e'], ['f'], ['g']]\n\nexports.simple = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], 3)\n// => [['a', 'b', 'c'], ['d', 'e', 'f'], ['g']]\n\nexports.chunkSizeZero = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], 0)\n// => []\n\nexports.chunkSizeNegative = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], -1)\n// => []\n"
},
{
"path": "src/content/lodash/array/chunk/notes.md",
"content": "Creates an array of elements split into groups the length of size. If array can't be split evenly, the final chunk will be the remaining elements.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#splice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)\n"
},
{
"path": "src/content/lodash/array/chunk/spec.js",
"content": "const expected = {\n noSize: [['a'], ['b'], ['c'], ['d'], ['e'], ['f'], ['g']],\n simple: [['a', 'b', 'c'], ['d', 'e', 'f'], ['g']],\n chunkSizeZero: [],\n chunkSizeNegative: [],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('chunk', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/chunk/vanilla.js",
"content": "const chunk = (arr, chunkSize = 1, cache = []) => {\n const tmp = [...arr]\n if (chunkSize <= 0) return cache\n while (tmp.length) cache.push(tmp.splice(0, chunkSize))\n return cache\n}\n\nexports.noSize = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'])\n// => [['a'], ['b'], ['c'], ['d'], ['e'], ['f'], ['g']]\n\nexports.simple = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], 3)\n// => [['a', 'b', 'c'], ['d', 'e', 'f'], ['g']]\n\nexports.chunkSizeZero = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], 0)\n// => []\n\nexports.chunkSizeNegative = chunk(['a', 'b', 'c', 'd', 'e', 'f', 'g'], -1)\n// => []\n"
},
{
"path": "src/content/lodash/array/compact/lodash.js",
"content": "// https://lodash.com/docs/#compact\nimport { compact } from 'lodash'\n\nmodule.exports = compact([0, 1, 2])\n// => [1, 2]\n"
},
{
"path": "src/content/lodash/array/compact/notes.md",
"content": "Creates an array with all falsey values removed. The values false, null, 0, "", undefined, and NaN are falsey.\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Source](https://www.reindex.io/blog/you-might-not-need-underscore/#create-a-copy-of-an-array-with-all-falsy-values-removed)\n"
},
{
"path": "src/content/lodash/array/compact/spec.js",
"content": "const expected = [1, 2]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('compact', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/compact/vanilla.js",
"content": "module.exports = [0, 1, 2].filter(x => !!x)\n// => [1, 2]\n"
},
{
"path": "src/content/lodash/array/concat/lodash.js",
"content": "// https://lodash.com/docs/#concat\nimport { concat } from 'lodash'\n\nmodule.exports = concat([1], 2, [3], [[4]])\n// => [1, 2, 3, [4]]\n"
},
{
"path": "src/content/lodash/array/concat/notes.md",
"content": "Creates a new array concatenating array with any additional arrays and/or values.\n\nResources: [Array#concat](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/concat) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_concat)\n"
},
{
"path": "src/content/lodash/array/concat/spec.js",
"content": "const expected = [1, 2, 3, [4]]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('concat', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/concat/vanilla.js",
"content": "module.exports = [1].concat(2, [3], [[4]])\n// => [1, 2, 3, [4]]\n"
},
{
"path": "src/content/lodash/array/difference/lodash.js",
"content": "// https://lodash.com/docs/#difference\nimport { difference } from 'lodash'\n\nmodule.exports = difference([2, 1], [3, 2])\n// => [1]\n"
},
{
"path": "src/content/lodash/array/difference/notes.md",
"content": "Creates an array of array values not included in the other given arrays.\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)\n"
},
{
"path": "src/content/lodash/array/difference/spec.js",
"content": "const expected = [1]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('difference', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/difference/vanilla.js",
"content": "const difference = (arr1, arr2) => arr1.filter(x => !arr2.includes(x))\n\nmodule.exports = difference([2, 1], [3, 2])\n// => [1]\n"
},
{
"path": "src/content/lodash/array/differenceBy/lodash.js",
"content": "// https://lodash.com/docs/#differenceBy\nimport { differenceBy } from 'lodash'\n\nexports.arrays = differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor)\n// => [1.2]\n\n// The `_.property` iteratee shorthand.\nexports.objects = differenceBy([{ x: 2 }, { x: 1 }], [{ x: 1 }], 'x')\n// => [{ 'x': 2 }]\n"
},
{
"path": "src/content/lodash/array/differenceBy/notes.md",
"content": "This method is like \\_.difference except that it accepts iteratee which is invoked for each element of array and values to generate the criterion by which they're compared. The order and references of result values are determined by the first array. The iteratee is invoked with one argument: (value).\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)\n"
},
{
"path": "src/content/lodash/array/differenceBy/spec.js",
"content": "const expected = {\n arrays: [1.2],\n objects: [{ x: 2 }],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('differenceBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/differenceBy/vanilla.js",
"content": "const differenceBy = (arr1, arr2, iteratee) => {\n if (typeof iteratee === 'string') {\n const prop = iteratee\n iteratee = item => item[prop]\n }\n return arr1.filter(c => !arr2.map(iteratee).includes(iteratee(c)))\n}\n\nexports.arrays = differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor)\n// => [1.2]\n\n// The `_.property` iteratee shorthand.\nexports.objects = differenceBy([{ x: 2 }, { x: 1 }], [{ x: 1 }], 'x')\n// => [{ 'x': 2 }]\n"
},
{
"path": "src/content/lodash/array/drop/lodash.js",
"content": "// https://lodash.com/docs/#drop\nimport { drop } from 'lodash'\n\nexports.simple = drop([1, 2, 3])\n// => [2, 3]\n\nexports.withNumber = drop([1, 2, 3], 2)\n// => [3]\n\nexports.withNumberVariant = drop([1, 2, 3], 5)\n// => []\n\nexports.withZero = drop([1, 2, 3], 0)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/array/drop/notes.md",
"content": "Creates a slice of array with n elements dropped from the beginning.\n\nResources: [Default parameters](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Default_parameters) [Array#slice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/slice)\n"
},
{
"path": "src/content/lodash/array/drop/spec.js",
"content": "const expected = {\n simple: [2, 3],\n withNumber: [3],\n withNumberVariant: [],\n withZero: [1, 2, 3],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('drop', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/drop/vanilla.js",
"content": "const drop = (arr, n = 1) => arr.slice(n)\n\nexports.simple = drop([1, 2, 3])\n// => [2, 3]\n\nexports.withNumber = drop([1, 2, 3], 2)\n// => [3]\n\nexports.withNumberVariant = drop([1, 2, 3], 5)\n// => []\n\nexports.withZero = drop([1, 2, 3], 0)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/array/dropRight/lodash.js",
"content": "// https://lodash.com/docs/#dropRight\nimport { dropRight } from 'lodash'\n\nexports.simple = dropRight([1, 2, 3])\n// => [1, 2]\n\nexports.withNumber = dropRight([1, 2, 3], 2)\n// => [1]\n\nexports.withNumberVariant = dropRight([1, 2, 3], 5)\n// => []\n\nexports.withZero = dropRight([1, 2, 3], 0)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/array/dropRight/notes.md",
"content": "Creates a slice of array with n elements dropped from the end.\n\nResources: [Default parameters](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Default_parameters) [Array#slice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/slice)\n"
},
{
"path": "src/content/lodash/array/dropRight/spec.js",
"content": "const expected = {\n simple: [1, 2],\n withNumber: [1],\n withNumberVariant: [],\n withZero: [1, 2, 3],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('dropRight', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/dropRight/vanilla.js",
"content": "const dropRight = (arr, n = 1) => arr.slice(0, -n || arr.length)\n\nexports.simple = dropRight([1, 2, 3])\n// => [1, 2]\n\nexports.withNumber = dropRight([1, 2, 3], 2)\n// => [1]\n\nexports.withNumberVariant = dropRight([1, 2, 3], 5)\n// => []\n\nexports.withZero = dropRight([1, 2, 3], 0)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/array/fill/lodash.js",
"content": "// https://lodash.com/docs/#fill\nimport { fill } from 'lodash'\n\nexports.array = fill([1, 2, 3], 'a')\n// => ['a', 'a', 'a']\n\nexports.arrayConstructor = fill(Array(3), 2)\n// => [2, 2, 2]\n\nexports.partial = fill([4, 6, 8, 10], '*', 1, 3)\n// => [4, '*', '*', 10]\n"
},
{
"path": "src/content/lodash/array/fill/notes.md",
"content": "Fills elements of array with value from start up to, but not including, end.\n\nResources: [Array#find](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/find) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_find)\n"
},
{
"path": "src/content/lodash/array/fill/spec.js",
"content": "const expected = {\n array: ['a', 'a', 'a'],\n arrayConstructor: [2, 2, 2],\n partial: [4, '*', '*', 10],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('fill', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/fill/vanilla.js",
"content": "exports.array = [1, 2, 3].fill('a')\n// => ['a', 'a', 'a']\n\nexports.arrayConstructor = Array(3).fill(2)\n// => [2, 2, 2]\n\nexports.partial = [4, 6, 8, 10].fill('*', 1, 3)\n// => [4, '*', '*', 10]\n"
},
{
"path": "src/content/lodash/array/findIndex/lodash.js",
"content": "// https://lodash.com/docs/#findIndex\nimport { findIndex } from 'lodash'\n\nconst users = [\n { user: 'barney', age: 36, active: true },\n { user: 'fred', age: 40, active: false },\n { user: 'pebbles', age: 1, active: true },\n]\n\nmodule.exports = findIndex(users, o => o.age >= 40)\n// => 1\n"
},
{
"path": "src/content/lodash/array/findIndex/notes.md",
"content": "This method is like \\_.find except that it returns the index of the first element predicate returns truthy for instead of the element itself.\n\nResources: [Array#findIndex](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_findindex)\n"
},
{
"path": "src/content/lodash/array/findIndex/spec.js",
"content": "const expected = 1\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('findIndex', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/findIndex/vanilla.js",
"content": "const users = [\n { user: 'barney', age: 36, active: true },\n { user: 'fred', age: 40, active: false },\n { user: 'pebbles', age: 1, active: true },\n]\n\nmodule.exports = users.findIndex(o => o.age >= 40)\n// => 1\n"
},
{
"path": "src/content/lodash/array/findLastIndex/lodash.js",
"content": "// https://lodash.com/docs/#findLastIndex\nimport { findLastIndex } from 'lodash'\n\nconst users = [\n { user: 'barney', active: true },\n { user: 'fred', active: false },\n { user: 'pebbles', active: false },\n]\n\nexports.found = findLastIndex(users, o => !o.active)\n// => 2\n\nexports.notFound = findLastIndex(users, o => !o.user)\n// => -1\n"
},
{
"path": "src/content/lodash/array/findLastIndex/notes.md",
"content": "This method is like \\_.findIndex except that it iterates over elements of collection from right to left.\n\nResources: [Array#findLastIndex](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex)\n"
},
{
"path": "src/content/lodash/array/findLastIndex/spec.js",
"content": "const expected = {\n found: 2,\n notFound: -1,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('findLastIndex', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/findLastIndex/vanilla.js",
"content": "const users = [\n { user: 'barney', active: true },\n { user: 'fred', active: false },\n { user: 'pebbles', active: false },\n]\n\nexports.found = users.findLastIndex(o => !o.active)\n// => 2\n\nexports.notFound = users.findLastIndex(o => !o.user)\n// => -1\n"
},
{
"path": "src/content/lodash/array/flatMap/lodash.js",
"content": "// https://lodash.com/docs/#flatMap\nimport { flatMap } from 'lodash'\n\nmodule.exports = flatMap([1, 2], n => [n, n])\n// => [1, 1, 2, 2]\n"
},
{
"path": "src/content/lodash/array/flatMap/notes.md",
"content": "Returns a new array formed by applying a given callback function to each element\nof the array, and then flattening the result by one level.\n\nResources:\n[Array#flatMap](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap)\n"
},
{
"path": "src/content/lodash/array/flatMap/spec.js",
"content": "const expected = [1, 1, 2, 2]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('flatMap', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/flatMap/vanilla.js",
"content": "module.exports = [1, 2].flatMap(n => [n, n])\n// => [1, 1, 2, 2]\n"
},
{
"path": "src/content/lodash/array/flatten/lodash.js",
"content": "// https://lodash.com/docs/#flatten\nimport { flatten } from 'lodash'\n\nmodule.exports = flatten([1, [2, [3, [4]], 5]])\n// => [1, 2, [3, [4]], 5]\n"
},
{
"path": "src/content/lodash/array/flatten/notes.md",
"content": "Flattens array a single level deep.\n\nResources: [Array#flat](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/flat) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_flatten)\n"
},
{
"path": "src/content/lodash/array/flatten/spec.js",
"content": "const expected = [1, 2, [3, [4]], 5]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('flatten', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/flatten/vanilla.js",
"content": "module.exports = [1, [2, [3, [4]], 5]].flat()\n// => [1, 2, [3, [4]], 5]\n"
},
{
"path": "src/content/lodash/array/flattenDeep/lodash.js",
"content": "// https://lodash.com/docs/#flattenDeep\nimport { flattenDeep } from 'lodash'\n\nmodule.exports = flattenDeep([1, [2, [3, [4]], 5]])\n// => [1, 2, 3, 4, 5]\n"
},
{
"path": "src/content/lodash/array/flattenDeep/notes.md",
"content": "Recursively flattens array.\n\nResources: [Array#flat](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/flat#flattening_nested_arrays) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_flattenDeep)\n"
},
{
"path": "src/content/lodash/array/flattenDeep/spec.js",
"content": "const expected = [1, 2, 3, 4, 5]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('flattenDeep', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/flattenDeep/vanilla.js",
"content": "module.exports = [1, [[2], [3, [4]], 5]].flat(Infinity)\n// => [1, 2, 3, 4, 5]\n"
},
{
"path": "src/content/lodash/array/flattenDepth/lodash.js",
"content": "// https://lodash.com/docs/#flattenDepth\nimport { flattenDepth } from 'lodash'\n\nvar array = [1, [2, [3, [4]], 5]]\n\nexports.example1 = flattenDepth(array, 1)\n// => [1, 2, [3, [4]], 5]\n\nexports.example2 = flattenDepth(array, 2)\n// => [1, 2, 3, [4], 5]\n"
},
{
"path": "src/content/lodash/array/flattenDepth/notes.md",
"content": "Recursively flatten array up to depth times.\n\nResources: [Array#flat](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/flat#flattening_nested_arrays)\n"
},
{
"path": "src/content/lodash/array/flattenDepth/spec.js",
"content": "const expected = {\n example1: [1, 2, [3, [4]], 5],\n example2: [1, 2, 3, [4], 5],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('flattenDepth', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/flattenDepth/vanilla.js",
"content": "const flattenDepth = (arr, depth) => arr.flat(depth)\n\nvar array = [1, [2, [3, [4]], 5]]\n\nexports.example1 = flattenDepth(array, 1)\n// => [1, 2, [3, [4]], 5]\n\nexports.example2 = flattenDepth(array, 2)\n// => [1, 2, 3, [4], 5]\n"
},
{
"path": "src/content/lodash/array/fromPairs/lodash.js",
"content": "// https://lodash.com/docs/#fromPairs\nimport { fromPairs } from 'lodash'\n\nmodule.exports = fromPairs([\n ['a', 1],\n ['b', 2],\n])\n// => { 'a': 1, 'b': 2 }\n"
},
{
"path": "src/content/lodash/array/fromPairs/notes.md",
"content": "The inverse of \\_.toPairs; this method returns an object composed from key-value pairs.\n\nResources: [Object.fromEntries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries)\n"
},
{
"path": "src/content/lodash/array/fromPairs/spec.js",
"content": "const expected = { a: 1, b: 2 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('fromPairs', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/fromPairs/vanilla.js",
"content": "module.exports = Object.fromEntries([\n ['a', 1],\n ['b', 2],\n])\n// => { 'a': 1, 'b': 2 }\n"
},
{
"path": "src/content/lodash/array/head/.eslintrc",
"content": "{\n \"rules\": {\n \"no-unused-vars\": 0\n }\n}\n"
},
{
"path": "src/content/lodash/array/head/lodash.js",
"content": "// https://lodash.com/docs/#head\nimport { head } from 'lodash'\n\nmodule.exports = head([1, 2, 3])\n// => 1\n"
},
{
"path": "src/content/lodash/array/head/notes.md",
"content": "Gets the first element of array.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Source](https://www.sitepoint.com/lodash-features-replace-es6/)\n"
},
{
"path": "src/content/lodash/array/head/spec.js",
"content": "const expected = 1\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('head', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/head/vanilla.js",
"content": "const [head] = [1, 2, 3]\nmodule.exports = head\n// => 1\n"
},
{
"path": "src/content/lodash/array/indexOf/lodash.js",
"content": "// https://lodash.com/docs/#indexOf\nimport { indexOf } from 'lodash'\n\nmodule.exports = indexOf([1, 2, 3], 3)\n// => 2\n"
},
{
"path": "src/content/lodash/array/indexOf/notes.md",
"content": "Gets the index at which the first occurrence of value is found in array.\n\nResources: [Array#indexOf](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf)\n"
},
{
"path": "src/content/lodash/array/indexOf/spec.js",
"content": "const expected = 2\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('indexOf', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/indexOf/vanilla.js",
"content": "module.exports = [1, 2, 3].indexOf(3)\n// => 2\n"
},
{
"path": "src/content/lodash/array/initial/lodash.js",
"content": "// https://lodash.com/docs/#initial\nimport { initial } from 'lodash'\n\nmodule.exports = initial([1, 2, 3])\n// => [1, 2]\n"
},
{
"path": "src/content/lodash/array/initial/notes.md",
"content": "Gets all but the last element of array.\n\nResources: [Array#slice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/slice)\n"
},
{
"path": "src/content/lodash/array/initial/spec.js",
"content": "const expected = [1, 2]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('head', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/initial/vanilla.js",
"content": "module.exports = [1, 2, 3].slice(0, -1)\n// => [1, 2]\n"
},
{
"path": "src/content/lodash/array/intersection/lodash.js",
"content": "// https://lodash.com/docs/#intersection\nimport { intersection } from 'lodash'\n\nmodule.exports = intersection([2, 1], [2, 3])\n// => [2]\n"
},
{
"path": "src/content/lodash/array/intersection/notes.md",
"content": "Creates an array of unique values that are included in all given arrays.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#every](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/every)\n"
},
{
"path": "src/content/lodash/array/intersection/spec.js",
"content": "const expected = [2]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('intersection', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/intersection/vanilla.js",
"content": "const intersection = (arr, ...args) =>\n arr.filter(item => args.every(arr => arr.includes(item)))\n\nmodule.exports = intersection([2, 1], [2, 3])\n// => [2]\n"
},
{
"path": "src/content/lodash/array/intersectionBy/lodash.js",
"content": "// https://lodash.com/docs/#intersectionBy\nimport { intersectionBy } from 'lodash'\n\nexports.default = intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor)\n// => [2.1]\n\n// The `_.property` iteratee shorthand.\nexports.property = intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x')\n// => [{ 'x': 1 }]\n"
},
{
"path": "src/content/lodash/array/intersectionBy/notes.md",
"content": "This method is like \\_.intersection except that it accepts iteratee which is invoked for each element of each arrays to generate the criterion by which they're compared. The order and references of result values are determined by the first array. The iteratee is invoked with one argument: (value).\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#pop](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/pop) [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#every](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/every) [Array#find](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/find)\n"
},
{
"path": "src/content/lodash/array/intersectionBy/spec.js",
"content": "const expected = {\n default: [2.1],\n property: [{ 'x': 1 }],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('intersectionBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/intersectionBy/vanilla.js",
"content": "const intersectionBy = (arr, ...args) => {\n let iteratee = args.pop()\n if (typeof iteratee === 'string') {\n const prop = iteratee\n iteratee = item => item[prop]\n }\n\n return arr.filter(item1 =>\n args.every(arr2 => arr2.find(item2 => iteratee(item1) === iteratee(item2)))\n )\n}\n\nexports.default = intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor)\n// => [2.1]\n\n// The `_.property` iteratee shorthand.\nexports.property = intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x')\n// => [{ 'x': 1 }]\n"
},
{
"path": "src/content/lodash/array/join/lodash.js",
"content": "// https://lodash.com/docs/#join\nimport { join } from 'lodash'\n\nmodule.exports = join(['a', 'b', 'c'], '~')\n// => 'a~b~c'\n"
},
{
"path": "src/content/lodash/array/join/notes.md",
"content": "Converts all elements in array into a string separated by separator.\n\nResources: [Array#join](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/join)\n"
},
{
"path": "src/content/lodash/array/join/spec.js",
"content": "const expected = 'a~b~c'\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('join', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/join/vanilla.js",
"content": "module.exports = ['a', 'b', 'c'].join('~')\n// => 'a~b~c'\n"
},
{
"path": "src/content/lodash/array/last/lodash.js",
"content": "// https://lodash.com/docs/#last\nimport { last } from 'lodash'\n\nmodule.exports = last(['a', 'b', 'c'])\n// => 'c'\n"
},
{
"path": "src/content/lodash/array/last/notes.md",
"content": "Gets the last element of array.\n"
},
{
"path": "src/content/lodash/array/last/spec.js",
"content": "const expected = 'c'\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('last', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/last/vanilla.js",
"content": "const arr = ['a', 'b', 'c']\n\nmodule.exports = arr[arr.length - 1]\n// => 'c'\n"
},
{
"path": "src/content/lodash/array/lastIndexOf/lodash.js",
"content": "// https://lodash.com/docs/#lastIndexOf\nimport { lastIndexOf } from 'lodash'\n\nexports.simple = lastIndexOf([1, 2, 1, 2], 2)\n// => 3\n\n// Search from the `fromIndex`\nexports.fromIndex = lastIndexOf([1, 2, 1, 2], 2, 2)\n// => 1\n"
},
{
"path": "src/content/lodash/array/lastIndexOf/notes.md",
"content": "This method is like \\_.indexOf except that it iterates over elements of array from right to left.\n\nResources: [Array#lastIndexOf](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf)\n"
},
{
"path": "src/content/lodash/array/lastIndexOf/spec.js",
"content": "const expected = {\n simple: 3,\n fromIndex: 1,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('lastIndexOf', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/lastIndexOf/vanilla.js",
"content": "exports.simple = [1, 2, 1, 2].lastIndexOf(2)\n// => 3\n\n// Search from the `fromIndex`\nexports.fromIndex = [1, 2, 1, 2].lastIndexOf(2, 2)\n// => 1\n"
},
{
"path": "src/content/lodash/array/nth/lodash.js",
"content": "// https://lodash.com/docs/#nth\nimport { nth } from 'lodash'\n\nconst array = ['a', 'b', 'c', 'd']\n\nexports.simple = nth(array, 1)\n// => 'b'\n\nexports.negative = nth(array, -2)\n// => 'c';\n"
},
{
"path": "src/content/lodash/array/nth/notes.md",
"content": "Gets the element at index n of array. If n is negative, the nth element from the end is returned.\n\nResources: [Array#slice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/slice)\n"
},
{
"path": "src/content/lodash/array/nth/spec.js",
"content": "const expected = {\n simple: 'b',\n negative: 'c',\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('nth', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/nth/vanilla.js",
"content": "const nth = (arr, idx) => arr.slice(idx, idx + 1)[0]\n\nconst array = ['a', 'b', 'c', 'd']\n\nexports.simple = nth(array, 1)\n// => 'b'\n\nexports.negative = nth(array, -2)\n// => 'c';\n"
},
{
"path": "src/content/lodash/array/pull/lodash.js",
"content": "// https://lodash.com/docs/#pull\nimport { pull } from 'lodash'\n\nvar array = ['a', 'b', 'c', 'a', 'b', 'c']\npull(array, 'a', 'c')\n\nmodule.exports = array\n// => ['b', 'b']\n"
},
{
"path": "src/content/lodash/array/pull/notes.md",
"content": "Removes all given values from array using SameValueZero for equality comparisons.
Note: Unlike _.without, this method mutates array. Use _.remove to remove elements from an array by predicate.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#forEach](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach) [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes) [Array#splice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice) [Array#indexOf](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf)\n"
},
{
"path": "src/content/lodash/array/pull/spec.js",
"content": "const expected = ['b', 'b']\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('pull', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/pull/vanilla.js",
"content": "const pull = (array, ...values) => {\n values.forEach(value => {\n while (array.includes(value)) {\n array.splice(array.indexOf(value), 1)\n }\n })\n return array\n}\n\nvar array = ['a', 'b', 'c', 'a', 'b', 'c']\npull(array, 'a', 'c')\n\nmodule.exports = array\n// => ['b', 'b']\n"
},
{
"path": "src/content/lodash/array/pullAt/lodash.js",
"content": "// https://lodash.com/docs/#pullAt\nimport { pullAt } from 'lodash'\n\nconst array = ['a', 'b', 'c', 'd']\n\nexports.return = pullAt(array, [1, 3])\n// => ['b', 'd']\n\nexports.array = array\n// => ['a', 'c']\n"
},
{
"path": "src/content/lodash/array/pullAt/notes.md",
"content": "Removes elements from array corresponding to indexes and returns an array of removed elements.\n\nResources: [Array#reverse](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse) [Array#splice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)\n"
},
{
"path": "src/content/lodash/array/pullAt/spec.js",
"content": "const expected = {\n return: ['b', 'd'],\n array: ['a', 'c'],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('pullAt', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/pullAt/vanilla.js",
"content": "const pullAt = (arr, idxs) =>\n idxs\n .reverse()\n .map(idx => arr.splice(idx, 1)[0])\n .reverse()\n\nconst array = ['a', 'b', 'c', 'd']\n\nexports.return = pullAt(array, [1, 3])\n// => ['b', 'd']\n\nexports.array = array\n// => ['a', 'c']\n"
},
{
"path": "src/content/lodash/array/reject/lodash.js",
"content": "// https://lodash.com/docs/#reject\nimport { reject } from 'lodash'\n\nmodule.exports = reject(\n ['a', 'b', 'c', 'd', 'e', 'f', 'g'],\n char => char === 'd'\n)\n// => [['a', 'b', 'c', 'e', 'f', 'g']]\n"
},
{
"path": "src/content/lodash/array/reject/notes.md",
"content": "The opposite of \\_.filter; this method returns the elements of collection that predicate does not return truthy for.\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter)\n"
},
{
"path": "src/content/lodash/array/reject/spec.js",
"content": "const expected = ['a', 'b', 'c', 'e', 'f', 'g']\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('reject', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/reject/vanilla.js",
"content": "module.exports = ['a', 'b', 'c', 'd', 'e', 'f', 'g'].filter(\n char => char !== 'd'\n)\n// => [['a', 'b', 'c', 'e', 'f', 'g']]\n"
},
{
"path": "src/content/lodash/array/remove/lodash.js",
"content": "// https://lodash.com/docs/#remove\nimport { remove } from 'lodash'\n\nconst array = [1, 2, 3, 4]\nconst evens = remove(array, n => {\n return n % 2 === 0\n})\n\nexports.array = array\n// => [1, 3]\n\nexports.evens = evens\n// => [2, 4]\n\nconst newArray = [1, 2, 3, 4, 5]\n\nexports.all = remove(newArray, () => newArray.length > 0)\n// => [1, 2, 3, 4, 5]\n\nexports.newArray = newArray\n// => []\n"
},
{
"path": "src/content/lodash/array/remove/notes.md",
"content": "Removes all elements from array that predicate returns truthy for and returns an array of the removed elements. The predicate is invoked with three arguments: (value, index, array).\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#splice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)\n"
},
{
"path": "src/content/lodash/array/remove/spec.js",
"content": "const expected = {\n array: [1, 3],\n evens: [2, 4],\n newArray: [],\n all: [1, 2, 3, 4, 5],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('remove', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/remove/vanilla.js",
"content": "const remove = (array, iteratee) => {\n // in order to not mutate the original array until the very end\n // we want to cache the indexes to remove while preparing the result to return\n const toRemove = []\n const result = array.filter((item, i) => iteratee(item) && toRemove.push(i))\n\n // just before returning, we can then remove the items, making sure we start\n // from the higher indexes: otherwise they would shift at each removal\n toRemove.reverse().forEach(i => array.splice(i, 1))\n return result\n}\n\nconst array = [1, 2, 3, 4]\nconst evens = remove(array, n => {\n return n % 2 === 0\n})\n\nexports.array = array\n// => [1, 3]\n\nexports.evens = evens\n// => [2, 4]\n\nconst newArray = [1, 2, 3, 4, 5]\n\nexports.all = remove(newArray, () => newArray.length > 0)\n// => [1, 2, 3, 4, 5]\n\nexports.newArray = newArray\n// => []\n"
},
{
"path": "src/content/lodash/array/reverse/lodash.js",
"content": "// https://lodash.com/docs/#reverse\nimport { reverse } from 'lodash'\n\nconst array = [1, 2, 3]\n\nexports.return = reverse(array)\n// => [3, 2, 1]\n\nexports.mutated = array\n// => [3, 2, 1]\n"
},
{
"path": "src/content/lodash/array/reverse/notes.md",
"content": "Reverses array so that the first element becomes the last, the second element becomes the second to last, and so on.\n\nResources: [Array#reverse](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse)\n"
},
{
"path": "src/content/lodash/array/reverse/spec.js",
"content": "const expected = {\n return: [3, 2, 1],\n mutated: [3, 2, 1],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('reverse', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/reverse/vanilla.js",
"content": "const array = [1, 2, 3]\n\nexports.return = array.reverse()\n// => [3, 2, 1]\n\nexports.mutated = array\n// => [3, 2, 1]\n"
},
{
"path": "src/content/lodash/array/slice/lodash.js",
"content": "// https://lodash.com/docs/#slice\nimport { slice } from 'lodash'\n\nexports.array = slice([1, 2, 3, 4], 2, 6)\n// => [ 3, 4 ]\n\nconst array = []\narray[6] = 6\narray[9] = 9\n\nexports.undefined = slice(array, 2, 6)\n// => [ undefined, undefined, undefined, undefined ]\n"
},
{
"path": "src/content/lodash/array/slice/notes.md",
"content": "Creates a slice of array from start up to, but not including, end.
Note: This method is used instead of Array#slice to ensure dense arrays are returned.\n\nResources: [Sparse vs Dense Arrays](https://remysharp.com/2018/06/26/an-adventure-in-sparse-arrays)\n"
},
{
"path": "src/content/lodash/array/slice/spec.js",
"content": "const expected = {\n array: [3, 4],\n undefined: [undefined, undefined, undefined, undefined],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ndescribe('slice', () => {\n test('normal behaviour', () => {\n expect(lodash.array).toEqual(expected.array)\n expect(plain.array).toEqual(lodash.array)\n })\n\n test('empty array are dense', () => {\n const denseExpected = expected.undefined.map(v => typeof v)\n const denseLodash = lodash.undefined.map(v => typeof v)\n const densePlain = plain.undefined.map(v => typeof v)\n\n expect(denseLodash).toEqual(denseExpected)\n expect(densePlain).toEqual(denseLodash)\n })\n})\n"
},
{
"path": "src/content/lodash/array/slice/vanilla.js",
"content": "const slice = (arr, start, end) => [...arr.slice(start, end)]\n\nexports.array = slice([1, 2, 3, 4], 2, 6)\n// => [ 3, 4 ]\n\nconst array = []\narray[6] = 6\narray[9] = 9\n\nexports.undefined = slice(array, 2, 6)\n// => [ undefined, undefined, undefined, undefined ]\n"
},
{
"path": "src/content/lodash/array/sortedIndexOf/lodash.js",
"content": "// https://lodash.com/docs/#sortedIndexOf\nimport { sortedIndexOf } from 'lodash'\n\nmodule.exports = sortedIndexOf([4, 5, 5, 5, 6], 5)\n// => 1\n"
},
{
"path": "src/content/lodash/array/sortedIndexOf/notes.md",
"content": "This method is like \\_.indexOf except that it performs the search on a sorted array.\n\nResources: [Array#sort](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/sort) [Array#indexOf](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf)\n"
},
{
"path": "src/content/lodash/array/sortedIndexOf/spec.js",
"content": "const expected = 1\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('sortedIndexOf', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/sortedIndexOf/vanilla.js",
"content": "const sortedIndexOf = (arr, value) => [...arr].sort().indexOf(value)\n\nmodule.exports = sortedIndexOf([4, 5, 5, 5, 6], 5)\n// => 1\n"
},
{
"path": "src/content/lodash/array/sortedLastIndexOf/lodash.js",
"content": "// https://lodash.com/docs/#sortedLastIndexOf\nimport { sortedLastIndexOf } from 'lodash'\n\nmodule.exports = sortedLastIndexOf([4, 5, 5, 5, 6], 5)\n// => 3\n"
},
{
"path": "src/content/lodash/array/sortedLastIndexOf/notes.md",
"content": "This method is like \\_.sortedIndex except that it returns the highest index at which value should be inserted into array in order to maintain its sort order.\n\nResources: [Array#sort](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/sort) [Array#lastIndexOf](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf)\n"
},
{
"path": "src/content/lodash/array/sortedLastIndexOf/spec.js",
"content": "const expected = 3\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('sortedLastIndexOf', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/sortedLastIndexOf/vanilla.js",
"content": "// https://lodash.com/docs/#sortedLastIndexOf\nconst sortedLastIndexOf = (arr, value) => [...arr].sort().lastIndexOf(value)\n\nmodule.exports = sortedLastIndexOf([4, 5, 5, 5, 6], 5)\n// => 3\n"
},
{
"path": "src/content/lodash/array/sortedUniq/lodash.js",
"content": "// https://lodash.com/docs/#sortedUniq\nimport { sortedUniq } from 'lodash'\n\nmodule.exports = sortedUniq([1, 1, 2])\n// => [1, 2]\n"
},
{
"path": "src/content/lodash/array/sortedUniq/notes.md",
"content": "This method is like \\_.uniq except that it's designed and optimized for sorted arrays.\n\nResources: [Set](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set) [Array#sort](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/sort)\n"
},
{
"path": "src/content/lodash/array/sortedUniq/spec.js",
"content": "const expected = [1, 2]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('sortedUniq', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/sortedUniq/vanilla.js",
"content": "const sortedUniq = arr => [...new Set(arr)].sort()\n\nmodule.exports = sortedUniq([1, 1, 2])\n// => [1, 2]\n"
},
{
"path": "src/content/lodash/array/tail/.eslintrc",
"content": "{\n \"rules\": {\n \"no-unused-vars\": 0\n }\n}\n"
},
{
"path": "src/content/lodash/array/tail/lodash.js",
"content": "// https://lodash.com/docs/#tail\nimport { tail } from 'lodash'\n\nmodule.exports = tail([1, 2, 3])\n// => [2, 3]\n"
},
{
"path": "src/content/lodash/array/tail/notes.md",
"content": "Gets all but the first element of array.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Source](https://www.sitepoint.com/lodash-features-replace-es6/)\n"
},
{
"path": "src/content/lodash/array/tail/spec.js",
"content": "const expected = [2, 3]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('tail', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/tail/vanilla.js",
"content": "const [, ...tail] = [1, 2, 3]\nmodule.exports = tail\n// => [2, 3]\n"
},
{
"path": "src/content/lodash/array/take/lodash.js",
"content": "// https://lodash.com/docs/#take\nimport { take } from 'lodash'\n\nexports.default = take([1, 2, 3])\n// => [1]\n\nexports.two = take([1, 2, 3], 2)\n// => [1, 2]\n\nexports.all = take([1, 2, 3], 5)\n// => [1, 2, 3]\n\nexports.none = take([1, 2, 3], 0)\n// => []\n"
},
{
"path": "src/content/lodash/array/take/notes.md",
"content": "Creates a slice of array with n elements taken from the beginning.\n\nResources: [Default parameters](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Default_parameters) [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#splice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)\n"
},
{
"path": "src/content/lodash/array/take/spec.js",
"content": "const expected = {\n default: [1],\n two: [1, 2],\n all: [1, 2, 3],\n none: [],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('take', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/take/vanilla.js",
"content": "const take = (arr, qty = 1) => [...arr].splice(0, qty)\n\nexports.default = take([1, 2, 3])\n// => [1]\n\nexports.two = take([1, 2, 3], 2)\n// => [1, 2]\n\nexports.all = take([1, 2, 3], 5)\n// => [1, 2, 3]\n\nexports.none = take([1, 2, 3], 0)\n// => []\n"
},
{
"path": "src/content/lodash/array/takeRight/lodash.js",
"content": "// https://lodash.com/docs/#takeRight\nimport { takeRight } from 'lodash'\n\nexports.default = takeRight([1, 2, 3])\n// => [3]\n\nexports.two = takeRight([1, 2, 3], 2)\n// => [2, 3]\n\nexports.all = takeRight([1, 2, 3], 5)\n// => [1, 2, 3]\n\nexports.none = takeRight([1, 2, 3], 0)\n// => []\n"
},
{
"path": "src/content/lodash/array/takeRight/notes.md",
"content": "Creates a slice of array with n elements taken from the end.\n\nResources: [Default parameters](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Default_parameters) [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#splice](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)\n"
},
{
"path": "src/content/lodash/array/takeRight/spec.js",
"content": "const expected = {\n default: [3],\n two: [2, 3],\n all: [1, 2, 3],\n none: [],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('takeRight', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/takeRight/vanilla.js",
"content": "const takeRight = (arr, qty = 1) => [...arr].splice(-qty, qty)\n\nexports.default = takeRight([1, 2, 3])\n// => [3]\n\nexports.two = takeRight([1, 2, 3], 2)\n// => [2, 3]\n\nexports.all = takeRight([1, 2, 3], 5)\n// => [1, 2, 3]\n\nexports.none = takeRight([1, 2, 3], 0)\n// => []\n"
},
{
"path": "src/content/lodash/array/toPairs/lodash.js",
"content": "// https://lodash.com/docs/#toPairs\nimport { toPairs } from 'lodash'\n\nfunction Foo() {\n this.a = 1\n this.b = 2\n}\n\nFoo.prototype.c = 3\n\nmodule.exports = toPairs(new Foo())\n// => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n"
},
{
"path": "src/content/lodash/array/toPairs/notes.md",
"content": "Creates an array of own enumerable string keyed-value pairs for object which can be consumed by \\_.fromPairs. If object is a map or set, its entries are returned.\n\nResources: [Object.entries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries)\n"
},
{
"path": "src/content/lodash/array/toPairs/spec.js",
"content": "const expected = [\n ['a', 1],\n ['b', 2],\n]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('toPairs', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/toPairs/vanilla.js",
"content": "function Foo() {\n this.a = 1\n this.b = 2\n}\n\nFoo.prototype.c = 3\n\nmodule.exports = Object.entries(new Foo())\n// => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n"
},
{
"path": "src/content/lodash/array/union/lodash.js",
"content": "// https://lodash.com/docs/#union\nimport { union } from 'lodash'\n\nmodule.exports = union([2], [1, 2], [1, 2])\n// => [2, 1]\n"
},
{
"path": "src/content/lodash/array/union/notes.md",
"content": "Creates an array of unique values, in order, from all given arrays.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Set](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set)\n"
},
{
"path": "src/content/lodash/array/union/spec.js",
"content": "const expected = [2, 1]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('union', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/union/vanilla.js",
"content": "const union = (arr, ...args) => [...new Set(arr.concat(...args))]\n\nmodule.exports = union([2], [1, 2], [1, 2])\n// => [2, 1]\n"
},
{
"path": "src/content/lodash/array/unionBy/lodash.js",
"content": "// https://lodash.com/docs/#unionBy\nimport { unionBy } from 'lodash'\n\nexports.default = unionBy([2.1], [1.2, 2.3], Math.floor)\n// => [2.1, 1.2]\n\n// The `_.property` iteratee shorthand.\nexports.property = unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x')\n// => [{ 'x': 1 }, { 'x': 2 }]\n\n// _.uniqBy example\nexports.uniqBy = unionBy([2.1, 1.2, 2.3], Math.floor)\n// => [2.1, 1.2]\n"
},
{
"path": "src/content/lodash/array/unionBy/notes.md",
"content": "This method is like \\_.union except that it accepts iteratee which is invoked for each element of each arrays to generate the criterion by which uniqueness is computed. Result values are chosen from the first array in which the value occurs. The iteratee is invoked with one argument: (value).\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#pop](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/pop) [Array#concat](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/concat) [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#findIndex](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex)\n"
},
{
"path": "src/content/lodash/array/unionBy/spec.js",
"content": "const expected = {\n default: [2.1, 1.2],\n property: [{ 'x': 1 }, { 'x': 2 }],\n uniqBy: [2.1, 1.2],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('unionBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/unionBy/vanilla.js",
"content": "// This implementation also works for\n// https://youmightnotneed.com/lodash#uniqBy\n// by passing only one array as an argument\n// before the iteratee function\nconst unionBy = (arr, ...args) => {\n let iteratee = args.pop()\n if (typeof iteratee === 'string') {\n const prop = iteratee\n iteratee = item => item[prop]\n }\n\n return arr\n .concat(...args)\n .filter(\n (x, i, self) => i === self.findIndex(y => iteratee(x) === iteratee(y))\n )\n}\n\nexports.default = unionBy([2.1], [1.2, 2.3], Math.floor)\n// => [2.1, 1.2]\n\n// The `_.property` iteratee shorthand.\nexports.property = unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x')\n// => [{ 'x': 1 }, { 'x': 2 }]\n\n// _.uniqBy example\nexports.uniqBy = unionBy([2.1, 1.2, 2.3], Math.floor)\n// => [2.1, 1.2]\n"
},
{
"path": "src/content/lodash/array/uniq/lodash.js",
"content": "// https://lodash.com/docs/#uniq\nimport { uniq } from 'lodash'\n\nmodule.exports = uniq([2, 1, 2])\n// => [2, 1]\n"
},
{
"path": "src/content/lodash/array/uniq/notes.md",
"content": "Creates a duplicate-free version of an array, in which only the first occurrence of each element is kept. The order of result values is determined by the order they occur in the array.\n\nResources: [Set](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set) [Source](https://www.reindex.io/blog/you-might-not-need-underscore/)\n"
},
{
"path": "src/content/lodash/array/uniq/spec.js",
"content": "const expected = [2, 1]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('uniq', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/uniq/vanilla.js",
"content": "module.exports = [...new Set([2, 1, 2])]\n// => [2, 1]\n"
},
{
"path": "src/content/lodash/array/uniqBy/lodash.js",
"content": "// https://lodash.com/docs/#uniqBy\nimport { uniqBy } from 'lodash'\n\nexports.default = uniqBy([2.1, 1.2, 2.3], Math.floor)\n// => [2.1, 1.2]\n\n// The `_.property` iteratee shorthand.\nexports.property = uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x')\n// => [{ 'x': 1 }, { 'x': 2 }]\n"
},
{
"path": "src/content/lodash/array/uniqBy/notes.md",
"content": "This method is like \\_.uniq except that it accepts iteratee which is invoked for each element in array to generate the criterion by which uniqueness is computed. The order of result values is determined by the order they occur in the array. The iteratee is invoked with one argument: (value).\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#findIndex](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex)\n"
},
{
"path": "src/content/lodash/array/uniqBy/spec.js",
"content": "const expected = {\n default: [2.1, 1.2],\n property: [{ 'x': 1 }, { 'x': 2 }],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('uniqBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/uniqBy/vanilla.js",
"content": "// This is a simplified implementation\n// of https://youmightnotneed.com/lodash#unionBy\n// which would work with only one array\nconst uniqBy = (arr, iteratee) => {\n if (typeof iteratee === 'string') {\n const prop = iteratee\n iteratee = item => item[prop]\n }\n\n return arr.filter(\n (x, i, self) => i === self.findIndex(y => iteratee(x) === iteratee(y))\n )\n}\n\nexports.default = uniqBy([2.1, 1.2, 2.3], Math.floor)\n// => [2.1, 1.2]\n\n// The `_.property` iteratee shorthand.\nexports.property = uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x')\n// => [{ 'x': 1 }, { 'x': 2 }]\n"
},
{
"path": "src/content/lodash/array/unzip/lodash.js",
"content": "// https://lodash.com/docs/#unzip\nimport { unzip } from 'lodash'\n\nmodule.exports = unzip([\n ['a', 1, true],\n ['b', 2, false],\n])\n// => [['a', 'b'], [1, 2], [true, false]]\n"
},
{
"path": "src/content/lodash/array/unzip/notes.md",
"content": "This method is like \\_.zip except that it accepts an array of grouped elements and creates an array regrouping the elements to their pre-zip configuration.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#map](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map)\n"
},
{
"path": "src/content/lodash/array/unzip/spec.js",
"content": "const expected = [\n ['a', 'b'],\n [1, 2],\n [true, false],\n]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('unzip', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/unzip/vanilla.js",
"content": "const zip = (arr, ...args) =>\n arr.map((value, idx) => [value, ...args.map(arr => arr[idx])])\n\nconst unzip = ([...args]) => zip(...args)\n\nmodule.exports = unzip([\n ['a', 1, true],\n ['b', 2, false],\n])\n// => [['a', 'b'], [1, 2], [true, false]]\n"
},
{
"path": "src/content/lodash/array/without/lodash.js",
"content": "// https://lodash.com/docs/#without\nimport { without } from 'lodash'\n\nconst array = [2, 1, 2, 3]\nexports.return = without(array, 1, 2)\n// => [3]\n\nexports.array = array\n// => [2, 1, 2, 3]\n"
},
{
"path": "src/content/lodash/array/without/notes.md",
"content": "Creates an array excluding all given values.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)\n"
},
{
"path": "src/content/lodash/array/without/spec.js",
"content": "const expected = {\n return: [3],\n array: [2, 1, 2, 3],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('without', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/without/vanilla.js",
"content": "const without = (arr, ...args) => arr.filter(item => !args.includes(item))\n\nconst array = [2, 1, 2, 3]\n\nexports.return = without(array, 1, 2)\n// => [3]\n\nexports.array = array\n// => [2, 1, 2, 3]\n"
},
{
"path": "src/content/lodash/array/xor/lodash.js",
"content": "// https://lodash.com/docs/#xor\nimport { xor } from 'lodash'\n\nmodule.exports.unique = xor([2, 1, 4], [2, 3, 2, 6])\n// => [1, 4, 3, 6]\n\nmodule.exports.duplicates = xor([1, 1, 2], [2, 2, 3])\n// => [1, 3]\n\nmodule.exports.variadic = xor([1], [2], [1, 3], [2, 4])\n// => [3, 4]\n"
},
{
"path": "src/content/lodash/array/xor/notes.md",
"content": "Creates an array of unique values that is the symmetric difference of the given arrays. The order of result values is determined by the order they occur in the arrays.\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)\n"
},
{
"path": "src/content/lodash/array/xor/spec.js",
"content": "const expected = {\n unique: [1, 4, 3, 6],\n duplicates: [1, 3],\n variadic: [3, 4],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('xor', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/xor/vanilla.js",
"content": "// this function can be used as a standalone xor if you only\n// ever need it to work with two arguments\nconst binaryXor = (arr1, arr2) => {\n const a = arr1.filter(x => !arr2.includes(x))\n const b = arr2.filter(x => !arr1.includes(x))\n\n return Array.from(new Set([...a, ...b]))\n}\n\nconst xor = (...arrays) => arrays.reduce(binaryXor, [])\n\nmodule.exports.unique = xor([2, 1, 4], [2, 3, 2, 6])\n// => [1, 4, 3, 6]\n\nmodule.exports.duplicates = xor([1, 1, 2], [2, 2, 3])\n// => [1, 3]\n\nmodule.exports.variadic = xor([1], [2], [1, 3], [2, 4])\n// => [3, 4]\n"
},
{
"path": "src/content/lodash/array/zip/lodash.js",
"content": "// https://lodash.com/docs/#zip\nimport { zip } from 'lodash'\n\nmodule.exports = zip(['a', 'b'], [1, 2], [true, false])\n// => [['a', 1, true], ['b', 2, false]]\n"
},
{
"path": "src/content/lodash/array/zip/notes.md",
"content": "Creates an array of grouped elements, the first of which contains the first elements of the given arrays, the second of which contains the second elements of the given arrays, and so on.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#map](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map)\n"
},
{
"path": "src/content/lodash/array/zip/spec.js",
"content": "const expected = [\n ['a', 1, true],\n ['b', 2, false],\n]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('zip', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/zip/vanilla.js",
"content": "const zip = (arr, ...args) =>\n arr.map((value, idx) => [value, ...args.map(arr => arr[idx])])\n\nmodule.exports = zip(['a', 'b'], [1, 2], [true, false])\n// => [['a', 1, true], ['b', 2, false]]\n"
},
{
"path": "src/content/lodash/array/zipObject/lodash.js",
"content": "// https://lodash.com/docs/#zipObject\nimport { zipObject } from 'lodash'\n\nmodule.exports = zipObject(['a', 'b'], [1, 2])\n// => { 'a': 1, 'b': 2 }\n"
},
{
"path": "src/content/lodash/array/zipObject/notes.md",
"content": "This method is like \\_.fromPairs except that it accepts two arrays, one of property identifiers and one of corresponding values.\n\nResources: [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/array/zipObject/spec.js",
"content": "const expected = { a: 1, b: 2 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('zipObject', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/array/zipObject/vanilla.js",
"content": "const zipObject = (keys, values) =>\n keys.reduce((acc, key, idx) => {\n acc[key] = values[idx]\n return acc\n }, {})\n\nmodule.exports = zipObject(['a', 'b'], [1, 2])\n// => { 'a': 1, 'b': 2 }\n"
},
{
"path": "src/content/lodash/collection/every/lodash.js",
"content": "// https://lodash.com/docs/#every\nimport { every } from 'lodash'\n\nfunction isLargerThanTen(element) {\n return element >= 10\n}\n\nmodule.exports = every([10, 20, 30], isLargerThanTen)\n// => true\n"
},
{
"path": "src/content/lodash/collection/every/notes.md",
"content": "Checks if predicate returns truthy for all elements of collection. Iteration is stopped once predicate returns falsey. The predicate is invoked with three arguments: (value, index|key, collection).\n\nResources: [Array#every](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/every) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_every)\n"
},
{
"path": "src/content/lodash/collection/every/spec.js",
"content": "const expected = true\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('every', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/every/vanilla.js",
"content": "function isLargerThanTen(element) {\n return element >= 10\n}\n\nmodule.exports = [10, 20, 30].every(isLargerThanTen)\n// => true\n"
},
{
"path": "src/content/lodash/collection/filter/lodash.js",
"content": "// https://lodash.com/docs/#filter\nimport { filter } from 'lodash'\n\nfunction isBigEnough(value) {\n return value >= 10\n}\n\nmodule.exports = filter([12, 5, 8, 130, 44], isBigEnough)\n// => [12, 130, 44]\n"
},
{
"path": "src/content/lodash/collection/filter/notes.md",
"content": "Iterates over elements of collection, returning an array of all elements predicate returns truthy for. The predicate is invoked with three arguments: (value, index|key, collection).\n\nResources: [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_filter)\n"
},
{
"path": "src/content/lodash/collection/filter/spec.js",
"content": "const expected = [12, 130, 44]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('filter', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/filter/vanilla.js",
"content": "function isBigEnough(value) {\n return value >= 10\n}\n\nmodule.exports = [12, 5, 8, 130, 44].filter(isBigEnough)\n// => [12, 130, 44]\n"
},
{
"path": "src/content/lodash/collection/find/lodash.js",
"content": "// https://lodash.com/docs/#find\nimport { find } from 'lodash'\n\nconst users = [\n { user: 'barney', age: 36, active: true },\n { user: 'fred', age: 40, active: false },\n { user: 'pebbles', age: 1, active: true },\n]\n\nmodule.exports = find(users, o => o.age < 40)\n// => { user: \"barney\", age: 36, active: true }\n"
},
{
"path": "src/content/lodash/collection/find/notes.md",
"content": "Iterates over elements of collection, returning the first element predicate returns truthy for. The predicate is invoked with three arguments: (value, index|key, collection).\n\nResources: [Array#find](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/find) [Source](https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_find)\n"
},
{
"path": "src/content/lodash/collection/find/spec.js",
"content": "const expected = { user: 'barney', age: 36, active: true }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('find', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/find/vanilla.js",
"content": "const users = [\n { user: 'barney', age: 36, active: true },\n { user: 'fred', age: 40, active: false },\n { user: 'pebbles', age: 1, active: true },\n]\n\nmodule.exports = users.find(o => o.age < 40)\n// => { user: \"barney\", age: 36, active: true }\n"
},
{
"path": "src/content/lodash/collection/forEach/lodash.js",
"content": "// https://lodash.com/docs/#forEach\nimport { forEach } from 'lodash'\n\nconst array = ['a', 'b', 'c']\n\nforEach(array, (item, index) => {\n console.log(item, index)\n})\n// => a 0\n// => b 1\n// => c 2\n\nconst obj = { a: 'red', b: 'green' }\nforEach(obj, (item, key) => {\n console.log(item, key)\n})\n// => red a\n// => green b"
},
{
"path": "src/content/lodash/collection/forEach/notes.md",
"content": "Iterates over elements of collection and invokes iteratee for each element. The iteratee is invoked with three arguments: (value, index|key, collection). Iteratee functions may exit iteration early by explicitly returning false.\n\nResources: [Array#forEach](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach) [Object#entries](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) [Source](https://www.reindex.io/blog/you-might-not-need-underscore/#iterate)\n"
},
{
"path": "src/content/lodash/collection/forEach/spec.js",
"content": "describe('forEach', () => {\n describe('lodash', () => {\n const logCache = console.log\n\n beforeAll(() => {\n console.log = jest.fn()\n require('./lodash')\n })\n afterAll(() => {\n console.log = logCache\n })\n\n test('log has been called correctly', () => {\n expect(console.log).toHaveBeenNthCalledWith(1, 'a', 0)\n expect(console.log).toHaveBeenNthCalledWith(2, 'b', 1)\n expect(console.log).toHaveBeenNthCalledWith(3, 'c', 2)\n expect(console.log).toHaveBeenNthCalledWith(4, 'red', 'a')\n expect(console.log).toHaveBeenNthCalledWith(5, 'green', 'b')\n })\n })\n\n describe('vanilla', () => {\n const logCache = console.log\n\n beforeAll(() => {\n console.log = jest.fn()\n require('./vanilla')\n })\n afterAll(() => {\n console.log = logCache\n })\n\n test('log has been called correctly', () => {\n expect(console.log).toHaveBeenNthCalledWith(1, 'a', 0)\n expect(console.log).toHaveBeenNthCalledWith(2, 'b', 1)\n expect(console.log).toHaveBeenNthCalledWith(3, 'c', 2)\n expect(console.log).toHaveBeenNthCalledWith(4, 'red', 'a')\n expect(console.log).toHaveBeenNthCalledWith(5, 'green', 'b')\n })\n })\n})\n"
},
{
"path": "src/content/lodash/collection/forEach/vanilla.js",
"content": "['a', 'b', 'c'].forEach((item, index) => {\n console.log(item, index)\n})\n// => a 0\n// => b 1\n// => c 2\n\nObject.entries({ a: 'red', b: 'green' }).forEach(([key, item]) => {\n console.log(item, key)\n})\n// => red a\n// => green b"
},
{
"path": "src/content/lodash/collection/forEachRight/lodash.js",
"content": "// https://lodash.com/docs/#forEachRight\nimport { forEachRight } from 'lodash'\n\nconst array = ['a', 'b', 'c']\n\nmodule.exports = forEachRight(array, (item, index) => {\n console.log(item, index)\n})\n// => c 2\n// => b 1\n// => a 0\n"
},
{
"path": "src/content/lodash/collection/forEachRight/notes.md",
"content": "This method is like \\_.forEach except that it iterates over elements of collection from right to left.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#reverse](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse) [Array#forEach](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)\n"
},
{
"path": "src/content/lodash/collection/forEachRight/spec.js",
"content": "describe('forEach', () => {\n describe('lodash', () => {\n const logCache = console.log\n\n beforeAll(() => {\n console.log = jest.fn()\n require('./lodash')\n })\n afterAll(() => {\n console.log = logCache\n })\n\n test('log has been called correctly', () => {\n expect(console.log).toHaveBeenNthCalledWith(1, 'c', 2)\n expect(console.log).toHaveBeenNthCalledWith(2, 'b', 1)\n expect(console.log).toHaveBeenNthCalledWith(3, 'a', 0)\n })\n })\n\n describe('vanilla', () => {\n const logCache = console.log\n\n beforeAll(() => {\n console.log = jest.fn()\n require('./vanilla')\n })\n afterAll(() => {\n console.log = logCache\n })\n\n test('log has been called correctly', () => {\n expect(console.log).toHaveBeenNthCalledWith(1, 'c', 2)\n expect(console.log).toHaveBeenNthCalledWith(2, 'b', 1)\n expect(console.log).toHaveBeenNthCalledWith(3, 'a', 0)\n })\n })\n})\n"
},
{
"path": "src/content/lodash/collection/forEachRight/vanilla.js",
"content": "const forEachRight = (array, iteratee) =>\n [...array].reverse().forEach((val, index) => {\n iteratee(val, array.length - 1 - index, array)\n })\n\nconst array = ['a', 'b', 'c']\n\nmodule.exports = forEachRight(array, (item, index) => {\n console.log(item, index)\n})\n// => c 2\n// => b 1\n// => a 0\n"
},
{
"path": "src/content/lodash/collection/includes/lodash.js",
"content": "// https://lodash.com/docs/#includes\nimport { includes } from 'lodash'\n\nmodule.exports = includes([1, 2, 3], 1)\n// => true\n"
},
{
"path": "src/content/lodash/collection/includes/notes.md",
"content": "Checks if value is in collection. If collection is a string, it's checked for a substring of value. If fromIndex is negative, it's used as the offset from the end of collection.\n\nResources: [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes) [Source](https://www.sitepoint.com/lodash-features-replace-es6/)\n"
},
{
"path": "src/content/lodash/collection/includes/spec.js",
"content": "const expected = true\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('includes', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/includes/vanilla.js",
"content": "module.exports = [1, 2, 3].includes(1)\n// => true\n"
},
{
"path": "src/content/lodash/collection/map/lodash.js",
"content": "// https://lodash.com/docs/#map\nimport { map } from 'lodash'\n\nmodule.exports = map([1, 2, 3], n => n * 3)\n// => [3, 6, 9]\n"
},
{
"path": "src/content/lodash/collection/map/notes.md",
"content": "Creates an array of values by running each element in collection thru iteratee. The iteratee is invoked with three arguments: (value, index|key, collection).\n\nResources: [Array#map](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map) [Source](https://www.sitepoint.com/lodash-features-replace-es6/)\n"
},
{
"path": "src/content/lodash/collection/map/spec.js",
"content": "const expected = [3, 6, 9]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('map', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/map/vanilla.js",
"content": "module.exports = [1, 2, 3].map(n => n * 3)\n// => [3, 6, 9]\n"
},
{
"path": "src/content/lodash/collection/reduce/lodash.js",
"content": "// https://lodash.com/docs/#reduce\nimport { reduce } from 'lodash'\n\nexports.array = reduce([1, 2], (sum, n) => sum + n, 0)\n// => 3\n\nexports.object = reduce(\n { a: 1, b: 2, c: 1 },\n (result, value, key) => {\n ;(result[value] || (result[value] = [])).push(key)\n return result\n },\n {}\n)\n// => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n"
},
{
"path": "src/content/lodash/collection/reduce/notes.md",
"content": "Reduces collection to a value which is the accumulated result of running each element in collection thru iteratee, where each successive invocation is supplied the return value of the previous. If accumulator is not given, the first element of collection is used as the initial value. The iteratee is invoked with four arguments: (accumulator, value, index|key, collection).\n\nResources: [Object.entries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/collection/reduce/spec.js",
"content": "const expected = {\n array: 3,\n object: { 1: ['a', 'c'], 2: ['b'] },\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('reduce', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/reduce/vanilla.js",
"content": "exports.array = [1, 2].reduce((sum, n) => sum + n, 0)\n// => 3\n\nexports.object = Object.entries({ a: 1, b: 2, c: 1 }).reduce(\n (result, [key, value]) => {\n ;(result[value] || (result[value] = [])).push(key)\n return result\n },\n {}\n)\n// => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n"
},
{
"path": "src/content/lodash/collection/reduceRight/lodash.js",
"content": "// https://lodash.com/docs/#reduceRight\nimport { reduceRight } from 'lodash'\n\nmodule.exports = reduceRight(\n [\n [0, 1],\n [2, 3],\n [4, 5],\n ],\n (flattened, other) => flattened.concat(other),\n []\n)\n// => [4, 5, 2, 3, 0, 1]\n"
},
{
"path": "src/content/lodash/collection/reduceRight/notes.md",
"content": "This method is like \\_.reduce except that it iterates over elements of collection from right to left.\n\nResources: [Array#reduceRight](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight) [Source](https://www.reindex.io/blog/you-might-not-need-underscore/)\n"
},
{
"path": "src/content/lodash/collection/reduceRight/spec.js",
"content": "const expected = [4, 5, 2, 3, 0, 1]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('reduceRight', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/reduceRight/vanilla.js",
"content": "module.exports = [\n [0, 1],\n [2, 3],\n [4, 5],\n].reduceRight((flattened, other) => flattened.concat(other), [])\n// => [4, 5, 2, 3, 0, 1]\n"
},
{
"path": "src/content/lodash/collection/size/lodash.js",
"content": "// https://lodash.com/docs/#size\nimport { size } from 'lodash'\n\nexports.array = size([1, 2, 3])\n// => 3\n\nexports.object = size({ a: 1, b: 2 })\n// => 2\n\nexports.string = size('pebbles')\n// => 7\n"
},
{
"path": "src/content/lodash/collection/size/notes.md",
"content": "Gets the size of collection by returning its length for array-like values or the number of own enumerable string keyed properties for objects.\n\nResources: [Object.keys](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/keys) [Source](https://www.reindex.io/blog/you-might-not-need-underscore/)\n"
},
{
"path": "src/content/lodash/collection/size/spec.js",
"content": "const expected = {\n array: 3,\n object: 2,\n string: 7,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('size', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/size/vanilla.js",
"content": "const size = item =>\n item.constructor === Object ? Object.keys(item).length : item.length\n\nexports.array = size([1, 2, 3])\n// => 3\n\nexports.object = size({ a: 1, b: 2 })\n// => 2\n\nexports.string = size('pebbles')\n// => 7\n"
},
{
"path": "src/content/lodash/collection/some/lodash.js",
"content": "// https://lodash.com/docs/#some\nimport { some } from 'lodash'\n\nconst isEven = n => n % 2 === 0\n\nmodule.exports = some([3, 4, 5], isEven)\n// => true\n"
},
{
"path": "src/content/lodash/collection/some/notes.md",
"content": "Checks if predicate returns truthy for any element of collection. Iteration is stopped once predicate returns truthy. The predicate is invoked with three arguments: (value, index|key, collection).\n\nResources: [Array#some](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/some)\n"
},
{
"path": "src/content/lodash/collection/some/spec.js",
"content": "const expected = true\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('some', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/collection/some/vanilla.js",
"content": "const isEven = n => n % 2 === 0\n\nmodule.exports = [3, 4, 5].some(isEven)\n// => true\n"
},
{
"path": "src/content/lodash/date/now/lodash.js",
"content": "// https://lodash.com/docs/#now\nimport { now } from 'lodash'\n\nmodule.exports = now()\n// => # milliseconds elapsed since the Unix epoch\n"
},
{
"path": "src/content/lodash/date/now/notes.md",
"content": "Gets the timestamp of the number of milliseconds that have elapsed since the Unix epoch (1 January 1970 00:00:00 UTC).\n\nResources: [Date.now](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Date/now)\n"
},
{
"path": "src/content/lodash/date/now/spec.js",
"content": "const lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('some', () => {\n // eslint-disable-next-line no-restricted-globals\n expect(isNaN(new Date(plain))).toEqual(false)\n expect(new Date(plain).getTime()).toEqual(plain)\n expect(plain - lodash).toEqual(0)\n})\n"
},
{
"path": "src/content/lodash/date/now/vanilla.js",
"content": "module.exports = Date.now()\n// => # milliseconds elapsed since the Unix epoch\n"
},
{
"path": "src/content/lodash/function/after/lodash.js",
"content": "// https://lodash.com/docs/#after\nimport { after } from 'lodash'\n\nmodule.exports = (times, fn) => after(times, fn)\n// => check the tests for more details\n"
},
{
"path": "src/content/lodash/function/after/notes.md",
"content": "The opposite of \\_.before; this method creates a function that invokes func once it's called n or more times.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/after/spec.js",
"content": "const fns = {\n lodash: require('./lodash'),\n plain: require('./vanilla'),\n}\n\ndescribe('after', () => {\n Object.entries(fns).forEach(([key, method]) => {\n describe(key, () => {\n let fn\n beforeEach(() => {\n fn = jest.fn(a => a)\n })\n\n test('it should call the fn only from the nth invocation and subsequents', () => {\n const befored = method(5, fn)\n\n for (let i = 0; i < 100; i++) {\n befored(i)\n }\n expect(fn).toBeCalledTimes(96)\n })\n })\n })\n})\n"
},
{
"path": "src/content/lodash/function/after/vanilla.js",
"content": "const after = (times, fn) => {\n let counter = 0\n\n return (...args) => {\n counter++\n\n if (counter >= times) {\n return fn(...args)\n }\n }\n}\n\nmodule.exports = (times, fn) => after(times, fn)\n"
},
{
"path": "src/content/lodash/function/ary/lodash.js",
"content": "// https://lodash.com/docs/#ary\nimport { ary } from 'lodash'\n\nmodule.exports = ['6', '8', '10'].map(ary(Number.parseInt, 1))\n// => [6, 8, 10]\n"
},
{
"path": "src/content/lodash/function/ary/notes.md",
"content": "Creates a function that invokes func, with up to n arguments, ignoring any additional arguments.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/ary/spec.js",
"content": "const expected = [6, 8, 10]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('ary', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/ary/vanilla.js",
"content": "const ary =\n (fn, arity) =>\n (...args) =>\n fn(...args.slice(0, arity))\n\nmodule.exports = ['6', '8', '10'].map(ary(Number.parseInt, 1))\n// => [6, 8, 10]\n"
},
{
"path": "src/content/lodash/function/before/lodash.js",
"content": "// https://lodash.com/docs/#before\nimport { before } from 'lodash'\n\nmodule.exports = (times, fn) => before(times, fn)\n// => check the tests for more details\n"
},
{
"path": "src/content/lodash/function/before/notes.md",
"content": "Creates a function that invokes func, with the this binding and arguments of the created function, while it's called less than n times. Subsequent calls to the created function return the result of the last func invocation.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/before/spec.js",
"content": "const fns = {\n lodash: require('./lodash'),\n plain: require('./vanilla'),\n}\n\ndescribe('before', () => {\n Object.entries(fns).forEach(([key, method]) => {\n describe(key, () => {\n let fn\n beforeEach(() => {\n fn = jest.fn(a => a)\n })\n\n test('it should call the fn only the first n-1 times and then return the result of the last operation', () => {\n const befored = method(3, fn)\n\n let res\n for (let i = 0; i < 100; i++) {\n res = befored(i)\n }\n expect(fn).toBeCalledTimes(2)\n expect(res).toBe(1)\n })\n })\n })\n})\n"
},
{
"path": "src/content/lodash/function/before/vanilla.js",
"content": "const before = (times, fn) => {\n let counter = 0\n let res\n\n return (...args) => {\n counter++\n\n if (counter < times) {\n res = fn(...args)\n return res\n } else {\n return res\n }\n }\n}\n\nmodule.exports = (times, fn) => before(times, fn)\n"
},
{
"path": "src/content/lodash/function/bind/lodash.js",
"content": "// https://lodash.com/docs/#bind\nimport { bind } from 'lodash'\n\nfunction greet(greeting, punctuation) {\n return greeting + ' ' + this.user + punctuation\n}\n\nvar object = { user: 'fred' }\n\nvar bound = bind(greet, object, 'hi')\n\nmodule.exports = bound('!')\n// => 'hi fred!'\n"
},
{
"path": "src/content/lodash/function/bind/notes.md",
"content": "Creates a function that invokes func with the this binding of thisArg and partials prepended to the arguments it receives.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Function#bind](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Function/bind)\n"
},
{
"path": "src/content/lodash/function/bind/spec.js",
"content": "const expected = 'hi fred!'\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('bind', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/bind/vanilla.js",
"content": "const bind = (fn, ctx, ...boundArgs) => fn.bind(ctx, ...boundArgs)\n\nfunction greet(greeting, punctuation) {\n return greeting + ' ' + this.user + punctuation\n}\n\nvar object = { user: 'fred' }\n\nvar bound = bind(greet, object, 'hi')\n\nmodule.exports = bound('!')\n// => 'hi fred!'\n"
},
{
"path": "src/content/lodash/function/bindKey/lodash.js",
"content": "// https://lodash.com/docs/#bindKey\nimport { bindKey } from 'lodash'\n\nconst object = {\n 'user': 'fred',\n 'greet': function (greeting, punctuation) {\n return greeting + ' ' + this.user + punctuation\n },\n}\n\nlet bound = bindKey(object, 'greet', 'hi')\nexports.first = bound('!')\n// => 'hi fred!'\n\nobject.greet = function (greeting, punctuation) {\n return greeting + 'ya ' + this.user + punctuation\n}\n\nexports.second = bound('!')\n// => 'hiya fred!'\n"
},
{
"path": "src/content/lodash/function/bindKey/notes.md",
"content": "Creates a function that invokes the method at object[key] with partials prepended to the arguments it receives.
This method differs from _.bind by allowing bound functions to reference methods that may be redefined or don't yet exist. See Peter Michaux's article for more details.
The _.bindKey.placeholder value, which defaults to \\_ in monolithic builds, may be used as a placeholder for partially applied arguments.\n\nResources: [Spread](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/bindKey/spec.js",
"content": "const expected = {\n first: 'hi fred!',\n second: 'hiya fred!',\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('bindKey', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/bindKey/vanilla.js",
"content": "const bindKey =\n (obj, method, ...args) =>\n (...bound) =>\n obj[method](...args, ...bound)\n\nconst object = {\n 'user': 'fred',\n 'greet': function (greeting, punctuation) {\n return greeting + ' ' + this.user + punctuation\n },\n}\n\nlet bound = bindKey(object, 'greet', 'hi')\nexports.first = bound('!')\n// => 'hi fred!'\n\nobject.greet = function (greeting, punctuation) {\n return greeting + 'ya ' + this.user + punctuation\n}\n\nexports.second = bound('!')\n// => 'hiya fred!'\n"
},
{
"path": "src/content/lodash/function/curry/lodash.js",
"content": "// https://lodash.com/docs/#curry\nimport { curry } from 'lodash'\n\nconst abc = (a, b, c) => [a, b, c]\n\nconst curried = curry(abc)\n\nexports.curry = curried(1)(2)(3)\n// => [1, 2, 3]\n\nexports.moreargs = curried(1, 2)(3)\n// => [1, 2, 3]\n\nexports.allargs = curried(1, 2, 3)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/function/curry/notes.md",
"content": "Creates a function that accepts arguments of func and either invokes func returning its result, if at least arity number of arguments have been provided, or returns a function that accepts the remaining func arguments, and so on. The arity of func may be specified if func.length is not sufficient.
The _.curry.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for provided arguments.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [learn-js](https://github.com/learn-javascript-courses/es6-curry)\n"
},
{
"path": "src/content/lodash/function/curry/spec.js",
"content": "const expected = {\n curry: [1, 2, 3],\n moreargs: [1, 2, 3],\n allargs: [1, 2, 3],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('curry', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/curry/vanilla.js",
"content": "const curry = func => {\n // define the number of expected arguments\n const expectedArgs = func.length\n const curried = (...args) => {\n // if enough arugments has been passed return the\n // result of the function execution, otherwise\n // continue adding arguments to the list\n return args.length >= expectedArgs\n ? func(...args)\n : (...args2) => curried(...args.concat(args2))\n }\n return curried\n}\n\nconst abc = (a, b, c) => [a, b, c]\n\nconst curried = curry(abc)\n\nexports.curry = curried(1)(2)(3)\n// => [1, 2, 3]\n\nexports.moreargs = curried(1, 2)(3)\n// => [1, 2, 3]\n\nexports.allargs = curried(1, 2, 3)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/function/curryRight/lodash.js",
"content": "// https://lodash.com/docs/#curryRight\nimport { curryRight } from 'lodash'\n\nconst abc = (a, b, c) => [a, b, c]\n\nconst curried = curryRight(abc)\n\nexports.curry = curried(3)(2)(1)\n// => [1, 2, 3]\n\nexports.moreargs = curried(2, 3)(1)\n// => [1, 2, 3]\n\nexports.allargs = curried(1, 2, 3)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/function/curryRight/notes.md",
"content": "This method is like _.curry except that arguments are applied to func in the manner of _.partialRight instead of _.partial.
The _.curryRight.placeholder value, which defaults to \\_ in monolithic builds, may be used as a placeholder for provided arguments.\n\nResources: [learn-js](https://github.com/learn-javascript-courses/es6-curry)\n"
},
{
"path": "src/content/lodash/function/curryRight/spec.js",
"content": "const expected = {\n curry: [1, 2, 3],\n moreargs: [1, 2, 3],\n allargs: [1, 2, 3],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('curry', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/curryRight/vanilla.js",
"content": "// the only difference from the curry method\n// implementation is how arguments gets concatenated\nconst curryRight = func => {\n const expectedArgs = func.length\n const curried = (...args) => {\n return args.length >= expectedArgs\n ? func(...args)\n : (...args2) => curried(...args2.concat(args))\n }\n return curried\n}\n\nconst abc = (a, b, c) => [a, b, c]\n\nconst curried = curryRight(abc)\n\nexports.curry = curried(3)(2)(1)\n// => [1, 2, 3]\n\nexports.moreargs = curried(2, 3)(1)\n// => [1, 2, 3]\n\nexports.allargs = curried(1, 2, 3)\n// => [1, 2, 3]\n"
},
{
"path": "src/content/lodash/function/debounce/lodash.js",
"content": "// https://lodash.com/docs/#debounce\nimport { debounce } from 'lodash'\n\nmodule.exports = (...args) => debounce(...args)\n// => check the tests for more details\n"
},
{
"path": "src/content/lodash/function/debounce/notes.md",
"content": "Creates a debounced function that delays invoking func until after wait milliseconds have elapsed since the last time the debounced function was invoked.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Debounce vs Throttle demo](http://demo.nimius.net/debounce_throttle/)\n"
},
{
"path": "src/content/lodash/function/debounce/spec.js",
"content": "const fns = {\n lodash: require('./lodash'),\n plain: require('./vanilla'),\n}\n\njest.useFakeTimers()\n\ndescribe('debounce', () => {\n Object.entries(fns).forEach(([key, debounce]) => {\n describe(key, () => {\n let fn\n beforeEach(() => {\n fn = jest.fn()\n })\n\n test('it should call the debounced fn once at the end of the quiet time', () => {\n const debounced = debounce(fn, 1000)\n\n for (let i = 0; i < 100; i++) {\n debounced(i)\n }\n\n jest.advanceTimersByTime(1001)\n expect(fn).toBeCalledTimes(1)\n expect(fn).toBeCalledWith(99)\n })\n\n test('it should call the debounced fn once at the end of the quiet time', () => {\n const debounced = debounce(fn, 1000)\n\n for (let i = 0; i < 100; i++) {\n debounced(i)\n jest.advanceTimersByTime(999)\n }\n\n jest.advanceTimersByTime(1000)\n expect(fn).toBeCalledTimes(1)\n expect(fn).toBeCalledWith(99)\n })\n\n test(\"with a leading invocation, it should call the debounced fn once, if the time doesn't pass\", () => {\n const debounced = debounce(fn, 1000, { leading: true })\n\n for (let i = 0; i < 100; i++) {\n debounced(i)\n }\n\n jest.advanceTimersByTime(999)\n\n expect(fn).toBeCalledTimes(1)\n expect(fn).toBeCalledWith(0)\n })\n\n test('with a leading invocation, it should call the debounced fn twice (at the beginning and at the end)', () => {\n const debounced = debounce(fn, 1000, { leading: true })\n\n for (let i = 0; i < 100; i++) {\n debounced(i)\n }\n\n jest.advanceTimersByTime(1500)\n\n expect(fn).toBeCalledTimes(2)\n expect(fn).toBeCalledWith(0)\n expect(fn).toBeCalledWith(99)\n })\n\n test('it should call the debounced fn once with leading option if it was called once', () => {\n const debounced = debounce(fn, 1000, { leading: true })\n\n debounced();\n\n jest.advanceTimersByTime(1001)\n expect(fn).toBeCalledTimes(1)\n })\n })\n })\n})\n"
},
{
"path": "src/content/lodash/function/debounce/vanilla.js",
"content": "const debounce = (func, delay, { leading } = {}) => {\n let timerId\n let shouldInvoke\n\n return (...args) => {\n shouldInvoke = true\n\n if (!timerId && leading) {\n func(...args)\n shouldInvoke = false\n }\n clearTimeout(timerId)\n\n timerId = setTimeout(() => shouldInvoke && func(...args), delay)\n }\n}\n\nmodule.exports = (...args) => debounce(...args)\n"
},
{
"path": "src/content/lodash/function/delay/lodash.js",
"content": "// https://lodash.com/docs/#delay\nimport { delay } from 'lodash'\n\nmodule.exports = fn => delay(fn, 1000, 'later')\n// => check the tests for more details\n"
},
{
"path": "src/content/lodash/function/delay/notes.md",
"content": "Invokes func after wait milliseconds. Any additional arguments are provided to func when it's invoked.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/delay/spec.js",
"content": "const fns = {\n lodash: require('./lodash'),\n plain: require('./vanilla'),\n}\n\njest.useFakeTimers()\n\ndescribe('delay', () => {\n Object.entries(fns).forEach(([key, delay]) => {\n describe(key, () => {\n let fn\n beforeEach(() => {\n fn = jest.fn()\n })\n\n test(\"it should not call the delayed function if the time didn't pass\", () => {\n delay(fn)\n expect(fn).toBeCalledTimes(0)\n })\n\n test('it should call the delayed function if the time passed', () => {\n delay(fn)\n\n jest.advanceTimersByTime(1001)\n\n expect(fn).toBeCalledTimes(1)\n expect(fn).toBeCalledWith('later')\n })\n })\n })\n})\n"
},
{
"path": "src/content/lodash/function/delay/vanilla.js",
"content": "const delay = (fn, timer, ...args) => setTimeout(() => fn(...args), timer)\n\nmodule.exports = fn => delay(fn, 1000, 'later')\n"
},
{
"path": "src/content/lodash/function/flip/lodash.js",
"content": "// https://lodash.com/docs/#flip\nimport { flip } from 'lodash'\n\nconst flipped = flip((...args) => args)\n\nmodule.exports = flipped('a', 'b', 'c', 'd')\n// => ['d', 'c', 'b', 'a']\n"
},
{
"path": "src/content/lodash/function/flip/notes.md",
"content": "Creates a function that invokes func with arguments reversed.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/flip/spec.js",
"content": "const expected = ['d', 'c', 'b', 'a']\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('flip', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/flip/vanilla.js",
"content": "const flip =\n func =>\n (...args) =>\n func(...args.reverse())\n\nconst flipped = flip((...args) => args)\n\nmodule.exports = flipped('a', 'b', 'c', 'd')\n// => ['d', 'c', 'b', 'a']\n"
},
{
"path": "src/content/lodash/function/negate/lodash.js",
"content": "// https://lodash.com/docs/#negate\nimport { negate } from 'lodash'\n\nconst isEven = n => n % 2 === 0\n\nmodule.exports = [1, 2, 3, 4, 5, 6].filter(negate(isEven))\n// => [1, 3, 5]\n"
},
{
"path": "src/content/lodash/function/negate/notes.md",
"content": "Creates a function that negates the result of the predicate func. The func predicate is invoked with the this binding and arguments of the created function.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/negate/spec.js",
"content": "const expected = [1, 3, 5]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('negate', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/negate/vanilla.js",
"content": "const negate =\n func =>\n (...args) =>\n !func(...args)\n\nconst isEven = n => n % 2 === 0\n\nmodule.exports = [1, 2, 3, 4, 5, 6].filter(negate(isEven))\n// => [1, 3, 5]\n"
},
{
"path": "src/content/lodash/function/once/lodash.js",
"content": "// https://lodash.com/docs/#once\nimport { once } from 'lodash'\n\nmodule.exports = fn => once(fn)\n// => check the tests for more details\n"
},
{
"path": "src/content/lodash/function/once/notes.md",
"content": "Creates a function that is restricted to invoking func once. Repeat calls to the function return the value of the first invocation.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/once/spec.js",
"content": "const fns = {\n lodash: require('./lodash'),\n plain: require('./vanilla'),\n}\n\ndescribe('once', () => {\n Object.entries(fns).forEach(([key, once]) => {\n describe(key, () => {\n let fn\n\n beforeEach(() => {\n fn = jest.fn(a => a)\n })\n\n test('it should call the function only once', () => {\n const onlyOnce = once(fn)\n\n let res\n for (let i = 0; i < 100; i++) {\n res = onlyOnce(i)\n }\n\n expect(fn).toBeCalledTimes(1)\n expect(fn).toBeCalledWith(0)\n expect(res).toBe(0)\n })\n })\n })\n})\n"
},
{
"path": "src/content/lodash/function/once/vanilla.js",
"content": "const once = fn => {\n let called = false\n let result\n return (...args) => {\n if (!called) {\n result = fn(...args)\n called = true\n }\n return result\n }\n}\n\nmodule.exports = fn => once(fn)\n"
},
{
"path": "src/content/lodash/function/overArgs/lodash.js",
"content": "// https://lodash.com/docs/#overArgs\nimport { overArgs } from 'lodash'\n\nfunction doubled(n) {\n return n * 2\n}\n\nfunction square(n) {\n return n * n\n}\n\nconst func = overArgs(\n function (x, y) {\n return [x, y]\n },\n [square, doubled]\n)\n\nexports.example1 = func(9, 3)\n// => [81, 6]\n\nexports.example2 = func(10, 5)\n// => [100, 10]\n"
},
{
"path": "src/content/lodash/function/overArgs/notes.md",
"content": "Creates a function that invokes func with its arguments transformed.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#map](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map)\n"
},
{
"path": "src/content/lodash/function/overArgs/spec.js",
"content": "const expected = {\n example1: [81, 6],\n example2: [100, 10],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('overArgs', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/overArgs/vanilla.js",
"content": "const overArgs =\n (fn, ops) =>\n (...args) => {\n const mappedArgs = args.map((arg, i) => (ops[i] ? ops[i](arg) : arg))\n return fn(...mappedArgs)\n }\n\nfunction doubled(n) {\n return n * 2\n}\n\nfunction square(n) {\n return n * n\n}\n\nconst func = overArgs(\n function (x, y) {\n return [x, y]\n },\n [square, doubled]\n)\n\nexports.example1 = func(9, 3)\n// => [81, 6]\n\nexports.example2 = func(10, 5)\n// => [100, 10]\n"
},
{
"path": "src/content/lodash/function/partial/lodash.js",
"content": "// https://lodash.com/docs/#partial\nimport { partial } from 'lodash'\n\nconst greet = (greeting, name) => `${greeting} ${name}`\n\nconst sayHelloTo = partial(greet, 'hello')\nmodule.exports = sayHelloTo('fred')\n// => 'hello fred'\n"
},
{
"path": "src/content/lodash/function/partial/notes.md",
"content": "Creates a function that invokes func with partials prepended to the arguments it receives.\n"
},
{
"path": "src/content/lodash/function/partial/spec.js",
"content": "const expected = 'hello fred'\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('partial', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/partial/vanilla.js",
"content": "const partial =\n (func, ...args) =>\n (...furtherArgs) =>\n func(...args, ...furtherArgs)\n\nconst greet = (greeting, name) => `${greeting} ${name}`\n\nconst sayHelloTo = partial(greet, 'hello')\nmodule.exports = sayHelloTo('fred')\n// => 'hello fred'\n"
},
{
"path": "src/content/lodash/function/partialRight/lodash.js",
"content": "// https://lodash.com/docs/#partialRight\nimport { partialRight } from 'lodash'\n\nconst greet = (greeting, name) => `${greeting} ${name}`\n\nconst greetFred = partialRight(greet, 'fred')\nmodule.exports = greetFred('hi')\n// => 'hi fred'\n"
},
{
"path": "src/content/lodash/function/partialRight/notes.md",
"content": "This method is like \\_.partial except that partially applied arguments are appended to the arguments it receives.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/partialRight/spec.js",
"content": "const expected = 'hi fred'\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('partialRight', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/partialRight/vanilla.js",
"content": "const partialRight =\n (func, ...cachedArgs) =>\n (...args) =>\n func(...args, ...cachedArgs)\n\nconst greet = (greeting, name) => `${greeting} ${name}`\n\nconst greetFred = partialRight(greet, 'fred')\nmodule.exports = greetFred('hi')\n// => 'hi fred'\n"
},
{
"path": "src/content/lodash/function/rearg/lodash.js",
"content": "// https://lodash.com/docs/#rearg\nimport { rearg } from 'lodash'\n\nconst rearged = rearg((a, b, c) => [a, b, c], [2, 0, 1])\n\nmodule.exports = rearged('b', 'c', 'a')\n// => ['a', 'b', 'c']\n"
},
{
"path": "src/content/lodash/function/rearg/notes.md",
"content": "Creates a function that invokes func with arguments arranged according to the specified indexes where the argument value at the first index is provided as the first argument, the argument value at the second index is provided as the second argument, and so on.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/rearg/spec.js",
"content": "const expected = ['a', 'b', 'c']\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('rearg', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/rearg/vanilla.js",
"content": "const rearg =\n (func, order) =>\n (...args) => {\n const reargs = order.map(idx => args[idx])\n return func(...reargs)\n }\n\nconst rearged = rearg((a, b, c) => [a, b, c], [2, 0, 1])\n\nmodule.exports = rearged('b', 'c', 'a')\n// => ['a', 'b', 'c']\n"
},
{
"path": "src/content/lodash/function/rest/lodash.js",
"content": "// https://lodash.com/docs/#rest\nimport { rest } from 'lodash'\n\nconst say = rest(\n (what, names) =>\n what +\n ' ' +\n names.slice(0, -1).join(', ') + // see _.initial\n (names.length > 1 ? ', & ' : '') +\n names[names.length - 1] // see _.last\n)\n\nmodule.exports = say('hello', 'fred', 'barney', 'pebbles')\n// => 'hello fred, barney, & pebbles'\n"
},
{
"path": "src/content/lodash/function/rest/notes.md",
"content": "Creates a function that invokes func with the this binding of the created function and arguments from start and beyond provided as an array.
Note: This method is based on the rest parameter."
},
{
"path": "src/content/lodash/function/rest/spec.js",
"content": "const expected = 'hello fred, barney, & pebbles'\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('rest', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/rest/vanilla.js",
"content": "const rest =\n func =>\n (first, ...args) =>\n func(first, args)\n\nconst say = rest(\n (what, names) =>\n what +\n ' ' +\n names.slice(0, -1).join(', ') + // see _.initial\n (names.length > 1 ? ', & ' : '') +\n names[names.length - 1] // see _.last\n)\n\nmodule.exports = say('hello', 'fred', 'barney', 'pebbles')\n// => 'hello fred, barney, & pebbles'\n"
},
{
"path": "src/content/lodash/function/spread/lodash.js",
"content": "// https://lodash.com/docs/#spread\nimport { spread } from 'lodash'\n\nconst say = spread(function (who, what) {\n return who + ' says ' + what\n})\n\nexports.basic = say(['fred', 'hello'])\n// => 'fred says hello'\n\nconst numbers = Promise.all([Promise.resolve(40), Promise.resolve(36)])\n\nexports.promise = numbers.then(\n spread(function (x, y) {\n return x + y\n })\n)\n// => a Promise of 76\n"
},
{
"path": "src/content/lodash/function/spread/notes.md",
"content": "Creates a function that invokes func with the this binding of the create function and an array of arguments much like Function#apply.
Note: This method is based on the spread operator.\n\nResources: [Spread](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/spread/spec.js",
"content": "const expected = {\n basic: 'fred says hello',\n promise: 76,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ndescribe('spread', () => {\n test('basic', () => {\n expect(lodash.basic).toEqual(expected.basic)\n expect(plain.basic).toEqual(lodash.basic)\n })\n\n test('promise', async () => {\n const lodashRes = await lodash.promise\n const plainRes = await plain.promise\n\n expect(lodashRes).toEqual(expected.promise)\n expect(plainRes).toEqual(lodashRes)\n })\n})\n"
},
{
"path": "src/content/lodash/function/spread/vanilla.js",
"content": "const spread = func => args => func(...args)\n\nconst say = spread(function (who, what) {\n return who + ' says ' + what\n})\n\nexports.basic = say(['fred', 'hello'])\n// => 'fred says hello'\n\nconst numbers = Promise.all([Promise.resolve(40), Promise.resolve(36)])\n\nexports.promise = numbers.then(\n spread(function (x, y) {\n return x + y\n })\n)\n// => a Promise of 76\n"
},
{
"path": "src/content/lodash/function/unary/lodash.js",
"content": "// https://lodash.com/docs/#unary\nimport { unary } from 'lodash'\n\nmodule.exports = ['6', '8', '10'].map(unary(Number.parseInt))\n// => [6, 8, 10]\n"
},
{
"path": "src/content/lodash/function/unary/notes.md",
"content": "Creates a function that accepts up to one argument, ignoring any additional arguments.\n"
},
{
"path": "src/content/lodash/function/unary/spec.js",
"content": "const expected = [6, 8, 10]\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('unary', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/unary/vanilla.js",
"content": "const unary = fn => arg => fn(arg)\n\nmodule.exports = ['6', '8', '10'].map(unary(Number.parseInt))\n// => [6, 8, 10]\n"
},
{
"path": "src/content/lodash/function/wrap/lodash.js",
"content": "// https://lodash.com/docs/#wrap\nimport { wrap } from 'lodash'\n\nconst sum2 = wrap(2, (a, b, c) => {\n return a + b + c\n})\n\nmodule.exports = sum2(1, 2)\n// => 5\n"
},
{
"path": "src/content/lodash/function/wrap/notes.md",
"content": "Creates a function that provides value to wrapper as its first argument. Any additional arguments provided to the function are appended to those provided to the wrapper.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/function/wrap/spec.js",
"content": "const expected = 5\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('wrap', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/function/wrap/vanilla.js",
"content": "const wrap =\n (value, func) =>\n (...args) =>\n func(value, ...args)\n\nconst sum2 = wrap(2, (a, b, c) => {\n return a + b + c\n})\n\nmodule.exports = sum2(1, 2)\n// => 5\n"
},
{
"path": "src/content/lodash/lang/castArray/lodash.js",
"content": "// https://lodash.com/docs/#castArray\nimport { castArray } from 'lodash'\n\nexports.num = castArray(1)\n// => [1]\n\nexports.obj = castArray({ a: 1 })\n// => [{ 'a': 1 }]\n\nexports.str = castArray('abc')\n// => ['abc']\n\nexports.null = castArray(null)\n// => [null]\n\nexports.undefined = castArray(undefined)\n// => [undefined]\n\nexports.empty = castArray()\n// => []\n\nconst array = [1, 2, 3]\nexports.arrayEquality = castArray(array) === array\n// => true\n"
},
{
"path": "src/content/lodash/lang/castArray/notes.md",
"content": "Casts value as an array if it's not one.\n\nResources: [instanceof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/instanceof) [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/lang/castArray/spec.js",
"content": "const expected = {\n num: [1],\n obj: [{ a: 1 }],\n str: ['abc'],\n null: [null],\n undefined: [undefined],\n empty: [],\n arrayEquality: true,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('castArray', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/castArray/vanilla.js",
"content": "const castArray = (...args) => (args[0] instanceof Array ? args[0] : args)\n\nexports.num = castArray(1)\n// => [1]\n\nexports.obj = castArray({ a: 1 })\n// => [{ 'a': 1 }]\n\nexports.str = castArray('abc')\n// => ['abc']\n\nexports.null = castArray(null)\n// => [null]\n\nexports.undefined = castArray(undefined)\n// => [undefined]\n\nexports.empty = castArray()\n// => []\n\nconst array = [1, 2, 3]\nexports.arrayEquality = castArray(array) === array\n// => true\n"
},
{
"path": "src/content/lodash/lang/cloneDeep/jest.fix.js",
"content": "/* istanbul ignore file */\nimport JSDOMEnvironment from 'jest-environment-jsdom'\n\n// https://github.com/facebook/jest/blob/v29.4.3/website/versioned_docs/version-29.4/Configuration.md#testenvironment-string\nexport default class FixJSDOMEnvironment extends JSDOMEnvironment {\n constructor(...args) {\n super(...args)\n\n // FIXME https://github.com/jsdom/jsdom/issues/3363\n this.global.structuredClone = structuredClone\n }\n}\n"
},
{
"path": "src/content/lodash/lang/cloneDeep/lodash.js",
"content": "// https://lodash.com/docs/#cloneDeep\nimport { cloneDeep } from 'lodash'\n\nvar objects = [{ 'a': 1 }, { 'b': 2 }]\n\nvar deep = cloneDeep(objects)\n\nmodule.exports = deep[0] === objects[0]\n// => false\n"
},
{
"path": "src/content/lodash/lang/cloneDeep/notes.md",
"content": "This method is like \\_.clone except that it recursively clones value.\n\nResources: [structuredClone](https://developer.mozilla.org/docs/Web/API/structuredClone)\n"
},
{
"path": "src/content/lodash/lang/cloneDeep/spec.js",
"content": "/**\n * @jest-environment ./src/content/lodash/lang/cloneDeep/jest.fix.js\n */\n\nconst expected = false\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('cloneDeep', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/cloneDeep/vanilla.js",
"content": "const cloneDeep = object => structuredClone(object)\n\nvar objects = [{ 'a': 1 }, { 'b': 2 }]\n\nvar deep = cloneDeep(objects)\n\nmodule.exports = deep[0] === objects[0]\n// => false\n"
},
{
"path": "src/content/lodash/lang/conformsTo/lodash.js",
"content": "// https://lodash.com/docs/#conformsTo\nimport { conformsTo } from 'lodash'\n\nconst object = { a: 1, b: 2 }\n\nexports.scenario1 = conformsTo(object, {\n b: n => n > 1,\n})\n// => true\n\nexports.scenario2 = conformsTo(object, {\n b: n => n > 2,\n})\n// => false\n"
},
{
"path": "src/content/lodash/lang/conformsTo/notes.md",
"content": "Checks if object conforms to source by invoking the predicate properties of source with the corresponding property values of object.\n\nResources: [Object.keys](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/keys) [Array#every](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/every)\n"
},
{
"path": "src/content/lodash/lang/conformsTo/spec.js",
"content": "const expected = {\n scenario1: true,\n scenario2: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('conformsTo', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/conformsTo/vanilla.js",
"content": "const conformsTo = (obj, ruleSet) =>\n Object.keys(ruleSet).every(key => ruleSet[key](obj[key]))\n\nconst object = { a: 1, b: 2 }\n\nexports.scenario1 = conformsTo(object, {\n b: n => n > 1,\n})\n// => true\n\nexports.scenario2 = conformsTo(object, {\n b: n => n > 2,\n})\n// => false\n"
},
{
"path": "src/content/lodash/lang/gt/lodash.js",
"content": "// https://lodash.com/docs/#gt\nimport { gt } from 'lodash'\n\nexports.greaterThan = gt(3, 1)\n// => true\n\nexports.equalTo = gt(3, 3)\n// => false\n\nexports.lessThan = gt(1, 3)\n// => false\n"
},
{
"path": "src/content/lodash/lang/gt/notes.md",
"content": "Checks if value is greater than other.\n\nResources: [Comparison Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)\n"
},
{
"path": "src/content/lodash/lang/gt/spec.js",
"content": "const expected = {\n greaterThan: true,\n equalTo: false,\n lessThan: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('gt', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/gt/vanilla.js",
"content": "const gt = (a, b) => a > b\n\nexports.greaterThan = gt(3, 1)\n// => true\n\nexports.equalTo = gt(3, 3)\n// => false\n\nexports.lessThan = gt(1, 3)\n// => false\n"
},
{
"path": "src/content/lodash/lang/gte/lodash.js",
"content": "// https://lodash.com/docs/#gte\nimport { gte } from 'lodash'\n\nexports.greaterThan = gte(3, 1)\n// => true\n\nexports.equalTo = gte(3, 3)\n// => true\n\nexports.lessThan = gte(1, 3)\n// => false\n"
},
{
"path": "src/content/lodash/lang/gte/notes.md",
"content": "Checks if value is greater than or equal to other.\n\nResources: [Comparison Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)\n"
},
{
"path": "src/content/lodash/lang/gte/spec.js",
"content": "const expected = {\n greaterThan: true,\n equalTo: true,\n lessThan: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('gte', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/gte/vanilla.js",
"content": "const gte = (a, b) => a >= b\n\nexports.greaterThan = gte(3, 1)\n// => true\n\nexports.equalTo = gte(3, 3)\n// => true\n\nexports.lessThan = gte(1, 3)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isArray/lodash.js",
"content": "// https://lodash.com/docs/#isArray\nimport { isArray } from 'lodash'\n\nexports.array = isArray([1, 2, 3])\n// => true\n\nexports.dom_body_children = isArray(document.body.children)\n// => false\n\nexports.string = isArray('abc')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isArray/notes.md",
"content": "Checks if value is classified as an Array object.\n\nResources: [Array.isArray](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray)\n"
},
{
"path": "src/content/lodash/lang/isArray/spec.js",
"content": "const expected = {\n array: true,\n dom_body_children: false,\n string: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isArray', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isArray/vanilla.js",
"content": "exports.array = Array.isArray([1, 2, 3])\n// => true\n\nexports.dom_body_children = Array.isArray(document.body.children)\n// => false\n\nexports.string = Array.isArray('abc')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isArrayBuffer/lodash.js",
"content": "// https://lodash.com/docs/#isArrayBuffer\nimport { isArrayBuffer } from 'lodash'\n\nexports.arrayBuffer = isArrayBuffer(new ArrayBuffer(2))\n// => true\n\nexports.array = isArrayBuffer(new Array(2))\n// => false\n"
},
{
"path": "src/content/lodash/lang/isArrayBuffer/notes.md",
"content": "Checks if value is an instance of ArrayBuffer.\n\nResources: [Node.js](https://nodejs.org/api/util.html#utiltypesisarraybuffervalue) [node-util](https://github.com/browserify/node-util/)\n"
},
{
"path": "src/content/lodash/lang/isArrayBuffer/spec.js",
"content": "const expected = {\n arrayBuffer: true,\n array: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isArrayBuffer', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isArrayBuffer/vanilla.js",
"content": "// Since Node.js v10+, it's available in the util library\n// https://nodejs.org/api/util.html##utiltypesisarraybuffervalue\n//\n// This implementation is a simplified version of the one found\n// in the polyfill module node-util (and it doesn't support IE)\nconst isArrayBuffer = value => value.toString() === '[object ArrayBuffer]'\n\nexports.arrayBuffer = isArrayBuffer(new ArrayBuffer(2))\n// => true\n\nexports.array = isArrayBuffer(new Array(2))\n// => false\n"
},
{
"path": "src/content/lodash/lang/isArrayLike/lodash.js",
"content": "// https://lodash.com/docs/#isArrayLike\nimport { isArrayLike } from 'lodash'\n\nexports.array = isArrayLike([1, 2, 3])\n// => true\n\nexports.arrayLike = isArrayLike(document.body.children)\n// => true\n\nexports.string = isArrayLike('abc')\n// => true\n\nexports.obj = isArrayLike({ a: 1 })\n// => false\n\nexports.funct = isArrayLike(() => {})\n// => false\n"
},
{
"path": "src/content/lodash/lang/isArrayLike/notes.md",
"content": "Checks if value is array-like. A value is considered array-like if it's not a function and has a value.length that's an integer greater than or equal to 0 and less than or equal to Number.MAX_SAFE_INTEGER.\n\nResources: [Number.MAX_SAFE_INTEGER](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER) [Optional Chaining](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Optional_chaining)\n"
},
{
"path": "src/content/lodash/lang/isArrayLike/spec.js",
"content": "const expected = {\n array: true,\n arrayLike: true,\n string: true,\n obj: false,\n funct: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isArrayLike', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isArrayLike/vanilla.js",
"content": "const isArrayLike = a =>\n typeof a !== 'function' &&\n a?.length >= 0 &&\n a?.length <= Number.MAX_SAFE_INTEGER\n\nexports.array = isArrayLike([1, 2, 3])\n// => true\n\nexports.arrayLike = isArrayLike(document.body.children)\n// => true\n\nexports.string = isArrayLike('abc')\n// => true\n\nexports.obj = isArrayLike({ a: 1 })\n// => false\n\nexports.funct = isArrayLike(() => {})\n// => false\n"
},
{
"path": "src/content/lodash/lang/isBoolean/lodash.js",
"content": "// https://lodash.com/docs/#isBoolean\nimport { isBoolean } from 'lodash'\n\nexports.true = isBoolean(false)\n// => true\n\nexports.false = isBoolean(null)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isBoolean/notes.md",
"content": "Checks if value is classified as a boolean primitive or object.\n"
},
{
"path": "src/content/lodash/lang/isBoolean/spec.js",
"content": "const expected = {\n true: true,\n false: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isBoolean', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isBoolean/vanilla.js",
"content": "const isBoolean = arg => arg === !!arg\n\nexports.true = isBoolean(false)\n// => true\n\nexports.false = isBoolean(null)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isDate/.eslintrc",
"content": "{\n \"rules\": {\n \"no-restricted-globals\": 0\n }\n}\n"
},
{
"path": "src/content/lodash/lang/isDate/lodash.js",
"content": "// https://lodash.com/docs/#isDate\nimport { isDate } from 'lodash'\n\nexports.true = isDate(new Date())\n// => true\n\nexports.false = isDate('Mon April 23 2012')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isDate/notes.md",
"content": "Checks if value is classified as a Date object.\n\nResources: [instanceof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/instanceof)\n"
},
{
"path": "src/content/lodash/lang/isDate/spec.js",
"content": "const expected = {\n true: true,\n false: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isDate', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isDate/vanilla.js",
"content": "const isDate = d => d instanceof Date && !isNaN(d)\n\nexports.true = isDate(new Date())\n// => true\n\nexports.false = isDate('Mon April 23 2012')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isEmpty/lodash.js",
"content": "// https://lodash.com/docs/#isEmpty\nimport { isEmpty } from 'lodash'\n\nexports.null = isEmpty(null)\n// => true\n\nexports.boolean = isEmpty(true)\n// => true\n\nexports.number = isEmpty(1)\n// => true\n\nexports.string = isEmpty('not empty')\n// => false\n\nexports.set = isEmpty(new Set([1, 2, 3]))\n// => true\n\nexports.map = isEmpty(new Map([['a', 1]]))\n// => false\n\nexports.array = isEmpty([1, 2, 3])\n// => false\n\nexports.object = isEmpty({ 'a': 1 })\n// => false\n\nexports.emptyArray = isEmpty([])\n// => true\n\nexports.emptyString = isEmpty('')\n// => true\n\nexports.emptySet = isEmpty(new Set())\n// => true\n\nexports.emptyMap = isEmpty(new Map())\n// => true\n"
},
{
"path": "src/content/lodash/lang/isEmpty/notes.md",
"content": "Checks if value is an empty object, collection, map, or set.
Objects are considered empty if they have no own enumerable string keyed properties.
Array-like values such as arguments objects, arrays, buffers, strings, or jQuery-like collections are considered empty if they have a length of 0. Similarly, maps and sets are considered empty if they have a size of 0.\n\nResources: [Object.entries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) [Set#size](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/size) [Optional Chaining](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Optional_chaining)\n"
},
{
"path": "src/content/lodash/lang/isEmpty/spec.js",
"content": "const expected = {\n array: false,\n emptyArray: true,\n emptyMap: true,\n emptySet: true,\n emptyString: true,\n map: false,\n null: true,\n number: true,\n object: false,\n boolean: true,\n set: false,\n string: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isEmpty', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isEmpty/vanilla.js",
"content": "const isEmpty = obj => {\n if (obj?.length || obj?.size) return false\n if (typeof obj !== 'object') return true\n for (const key in obj) if (Object.hasOwn(obj, key)) return false\n return true\n}\n\nexports.null = isEmpty(null)\n// => true\n\nexports.boolean = isEmpty(true)\n// => true\n\nexports.number = isEmpty(1)\n// => true\n\nexports.string = isEmpty('not empty')\n// => false\n\nexports.set = isEmpty(new Set([1, 2, 3]))\n// => false\n\nexports.map = isEmpty(new Map([['a', 1]]))\n// => false\n\nexports.array = isEmpty([1, 2, 3])\n// => false\n\nexports.object = isEmpty({ 'a': 1 })\n// => false\n\nexports.emptyArray = isEmpty([])\n// => true\n\nexports.emptyString = isEmpty('')\n// => true\n\nexports.emptySet = isEmpty(new Set())\n// => true\n\nexports.emptyMap = isEmpty(new Map())\n// => true\n"
},
{
"path": "src/content/lodash/lang/isError/lodash.js",
"content": "// https://lodash.com/docs/#isError\nimport { isError } from 'lodash'\n\nexports.error = isError(new Error())\n// => true\n\nexports.notError = isError(Error)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isError/notes.md",
"content": "Checks if value is an Error, EvalError, RangeError, ReferenceError, SyntaxError, TypeError, or URIError object.\n\nResources: [instanceof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/instanceof)\n"
},
{
"path": "src/content/lodash/lang/isError/spec.js",
"content": "const expected = {\n error: true,\n notError: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isError', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isError/vanilla.js",
"content": "const isError = err => err instanceof Error\n\nexports.error = isError(new Error())\n// => true\n\nexports.notError = isError(Error)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isFinite/lodash.js",
"content": "// https://lodash.com/docs/#isFinite\nimport { isFinite } from 'lodash'\n\nexports.integer = isFinite(3)\n// => true\n\nexports.lowerBound = isFinite(Number.MIN_VALUE)\n// => true\n\nexports.infinite = isFinite(Infinity)\n// => false\n\nexports.stringNumber = isFinite('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isFinite/notes.md",
"content": "Checks if value is a finite primitive number.\n\nResources: [Number.isFinite](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite)\n"
},
{
"path": "src/content/lodash/lang/isFinite/spec.js",
"content": "const expected = {\n integer: true,\n lowerBound: true,\n infinite: false,\n stringNumber: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isFinite', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isFinite/vanilla.js",
"content": "exports.integer = Number.isFinite(3)\n// => true\n\nexports.lowerBound = Number.isFinite(Number.MIN_VALUE)\n// => true\n\nexports.infinite = Number.isFinite(Infinity)\n// => false\n\nexports.stringNumber = Number.isFinite('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isFunction/lodash.js",
"content": "// https://lodash.com/docs/#isFunction\nimport { isFunction } from 'lodash'\n\nexports.func = isFunction(function () {})\n// => true\n\nexports.arrowFunc = isFunction(() => {})\n// => true\n\nexports.class = isFunction(class NotAFunction {})\n// => true\n\nexports.reg = isFunction(/abc/)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isFunction/notes.md",
"content": "Checks if value is classified as a Function object.\n\nResources: [typeof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/typeof)\n"
},
{
"path": "src/content/lodash/lang/isFunction/spec.js",
"content": "const expected = {\n func: true,\n arrowFunc: true,\n class: true,\n reg: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isFunction', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isFunction/vanilla.js",
"content": "const isFunction = val => typeof val === 'function'\n\nexports.func = isFunction(function () {})\n// => true\n\nexports.arrowFunc = isFunction(() => {})\n// => true\n\nexports.class = isFunction(class NotAFunction {})\n// => false\n\nexports.reg = isFunction(/abc/)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isInteger/lodash.js",
"content": "// https://lodash.com/docs/#isInteger\nimport { isInteger } from 'lodash'\n\nexports.integer = isInteger(3)\n// => true\n\nexports.lowerBound = isInteger(Number.MIN_VALUE)\n// => false\n\nexports.infinite = isInteger(Infinity)\n// => false\n\nexports.stringNumber = isInteger('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isInteger/notes.md",
"content": "Checks if value is an integer.\n\nResources: [Number.isInteger](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger)\n"
},
{
"path": "src/content/lodash/lang/isInteger/spec.js",
"content": "const expected = {\n integer: true,\n lowerBound: false,\n infinite: false,\n stringNumber: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isInteger', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isInteger/vanilla.js",
"content": "exports.integer = Number.isInteger(3)\n// => true\n\nexports.lowerBound = Number.isInteger(Number.MIN_VALUE)\n// => false\n\nexports.infinite = Number.isInteger(Infinity)\n// => false\n\nexports.stringNumber = Number.isInteger('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isMap/lodash.js",
"content": "// https://lodash.com/docs/#isMap\nimport { isMap } from 'lodash'\n\nexports.mapValue = isMap(new Map())\n// => true\n\nexports.weakMapValue = isMap(new WeakMap())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isMap/notes.md",
"content": "Checks if value is classified as a Map object."
},
{
"path": "src/content/lodash/lang/isMap/spec.js",
"content": "const expected = {\n mapValue: true,\n weakMapValue: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isMap', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isMap/vanilla.js",
"content": "// Since Node.js v10+, it's available in the util library\n// https://nodejs.org/api/util.html##util_util_types_ismap_value\n//\n// This implementation is a simplified version of the one found\n// in the polyfill module node-util (and it doesn't support IE)\nconst isMap = value => value.toString() === '[object Map]'\n\nexports.mapValue = isMap(new Map())\n// => true\n\nexports.weakMapValue = isMap(new WeakMap())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isMatch/lodash.js",
"content": "// https://lodash.com/docs/#isMatch\nimport { isMatch } from 'lodash'\n\nconst object = { 'a': 1, 'b': 2, c: { a: 2 }, d: [1, 2, 3], e: {} }\n\nexports.match = isMatch(object, { 'b': 2 })\n// => true\n\nexports.noMatch = isMatch(object, { 'b': 1 })\n// => false\n\nexports.matchNested = isMatch(object, { 'c': { a: 2 } })\n// => true\n\nexports.noMatchNested = isMatch(object, { 'c': { a: 3 } })\n// => false\n\nexports.matchArray = isMatch(object, { 'd': [1, 2, 3] })\n// => true\n\nexports.matchPartialArray = isMatch(object, { 'd': [2] })\n// => true\n\nexports.noMatchArray = isMatch(object, { 'd': 2 })\n// => false\n\nexports.empty = isMatch(object, { 'e': {} })\n// => true\n"
},
{
"path": "src/content/lodash/lang/isMatch/notes.md",
"content": "Performs a partial deep comparison between object and source to determine if object contains equivalent property values.\n\nResources: [Array.isArray](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray) [Array#every](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/every) [Array#includes](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)\n"
},
{
"path": "src/content/lodash/lang/isMatch/spec.js",
"content": "const expected = {\n match: true,\n noMatch: false,\n matchNested: true,\n noMatchNested: false,\n matchArray: true,\n matchPartialArray: true,\n noMatchArray: false,\n empty: true,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isMatch', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isMatch/vanilla.js",
"content": "const isMatch = (object, source) => {\n for (let key in source) {\n // For arrays we look for partial matches\n if (Array.isArray(source[key]) && Array.isArray(object[key])) {\n return source[key].every(v => object[key].includes(v))\n }\n // For any other data type we look for equality of the values\n return typeof source[key] === 'object'\n ? isMatch(object[key], source[key])\n : object[key] === source[key]\n }\n\n // This should catch emtpy structures\n return JSON.stringify(object) === JSON.stringify(source)\n}\n\nconst object = { 'a': 1, 'b': 2, c: { a: 2 }, d: [1, 2, 3], e: {} }\n\nexports.match = isMatch(object, { 'b': 2 })\n// => true\n\nexports.noMatch = isMatch(object, { 'b': 1 })\n// => false\n\nexports.matchNested = isMatch(object, { 'c': { a: 2 } })\n// => true\n\nexports.noMatchNested = isMatch(object, { 'c': { a: 3 } })\n// => false\n\nexports.matchArray = isMatch(object, { 'd': [1, 2, 3] })\n// => true\n\nexports.matchPartialArray = isMatch(object, { 'd': [2] })\n// => true\n\nexports.noMatchArray = isMatch(object, { 'd': 2 })\n// => false\n\nexports.empty = isMatch(object, { 'e': {} })\n// => true\n"
},
{
"path": "src/content/lodash/lang/isNaN/lodash.js",
"content": "// https://lodash.com/docs/#isNaN\nimport { isNaN } from 'lodash'\n\nexports.NaN = isNaN(NaN)\n// => true\n\nexports.NumberNaN = isNaN(Number(NaN))\n// => true\n\nexports.undef = isNaN(undefined)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNaN/notes.md",
"content": "Checks if value is NaN.\n\nResources: [Number.isNaN](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN)\n"
},
{
"path": "src/content/lodash/lang/isNaN/spec.js",
"content": "const expected = {\n NaN: true,\n NumberNaN: true,\n undef: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isNaN', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isNaN/vanilla.js",
"content": "exports.NaN = Number.isNaN(NaN)\n// => true\n\nexports.NumberNaN = Number.isNaN(Number(NaN))\n// => true\n\nexports.undef = Number.isNaN(undefined)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNil/lodash.js",
"content": "// https://lodash.com/docs/#isNil\nimport { isNil } from 'lodash'\n\nexports.nullVal = isNil(null)\n// => true\n\nexports.undefVal = isNil(undefined)\n// => true\n\nexports.nanVal = isNil(NaN)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNil/notes.md",
"content": "Checks if value is null or undefined.\n\nResources: [Comparison Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)\n"
},
{
"path": "src/content/lodash/lang/isNil/spec.js",
"content": "const expected = {\n nullVal: true,\n undefVal: true,\n nanVal: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isNil', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isNil/vanilla.js",
"content": "const isNil = val => val == null\n\nexports.nullVal = isNil(null)\n// => true\n\nexports.undefVal = isNil(undefined)\n// => true\n\nexports.nanVal = isNil(NaN)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNull/lodash.js",
"content": "// https://lodash.com/docs/#isNull\nimport { isNull } from 'lodash'\n\nexports.nullVal = isNull(null)\n// => true\n\nexports.undefVal = isNull(undefined)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNull/notes.md",
"content": "Checks if value is null.\n\nResources: [Equality comparisons](https://developer.mozilla.org/docs/Web/JavaScript/Equality_comparisons_and_sameness)\n"
},
{
"path": "src/content/lodash/lang/isNull/spec.js",
"content": "const expected = {\n nullVal: true,\n undefVal: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isNull', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isNull/vanilla.js",
"content": "const isNull = val => val === null\n\nexports.nullVal = isNull(null)\n// => true\n\nexports.undefVal = isNull(undefined)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNumber/lodash.js",
"content": "// https://lodash.com/docs/#isNumber\nimport { isNumber } from 'lodash'\n\nexports.number = isNumber(3)\n// => true\n\nexports.minValue = isNumber(Number.MIN_VALUE)\n// => true\n\nexports.infinity = isNumber(Infinity)\n// => true\n\nexports.string = isNumber('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isNumber/notes.md",
"content": "Checks if value is classified as a Number primitive or object.\n\nResources: [typeof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/typeof)\n"
},
{
"path": "src/content/lodash/lang/isNumber/spec.js",
"content": "const expected = {\n number: true,\n minValue: true,\n infinity: true,\n string: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isNumber', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isNumber/vanilla.js",
"content": "const isNumber = a => typeof a === 'number'\n\nexports.number = isNumber(3)\n// => true\n\nexports.minValue = isNumber(Number.MIN_VALUE)\n// => true\n\nexports.infinity = isNumber(Infinity)\n// => true\n\nexports.string = isNumber('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isObject/lodash.js",
"content": "// https://lodash.com/docs/#isObject\nimport { isObject } from 'lodash'\n\nexports.object = isObject({})\n// => true\n\nexports.array = isObject([1, 2, 3])\n// => true\n\nexports.funct = isObject(() => {})\n// => true\n\nexports.null = isObject(null)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isObject/notes.md",
"content": "Checks if value is the language type of Object. (e.g. arrays, functions, objects, regexes, new Number(0), and new String(''))\n\nResources: [instanceof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/instanceof)\n"
},
{
"path": "src/content/lodash/lang/isObject/spec.js",
"content": "const expected = {\n object: true,\n array: true,\n funct: true,\n null: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isObject', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isObject/vanilla.js",
"content": "const isObject = a => a instanceof Object\n\nexports.object = isObject({})\n// => true\n\nexports.array = isObject([1, 2, 3])\n// => true\n\nexports.funct = isObject(() => {})\n// => true\n\nexports.null = isObject(null)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isRegExp/lodash.js",
"content": "// https://lodash.com/docs/#isRegExp\nimport { isRegExp } from 'lodash'\n\nexports.regex = isRegExp(/abc/)\n// => true\n\nexports.notRegex = isRegExp('/abc/')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isRegExp/notes.md",
"content": "Checks if value is classified as a RegExp object.\n\nResources: [instanceof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/instanceof)\n"
},
{
"path": "src/content/lodash/lang/isRegExp/spec.js",
"content": "const expected = {\n regex: true,\n notRegex: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isRegExp', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isRegExp/vanilla.js",
"content": "const isRegExp = obj => obj instanceof RegExp\n\nexports.regex = isRegExp(/abc/)\n// => true\n\nexports.notRegex = isRegExp('/abc/')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isSafeInteger/lodash.js",
"content": "// https://lodash.com/docs/#isSafeInteger\nimport { isSafeInteger } from 'lodash'\n\nexports.number = isSafeInteger(3)\n// => true\n\nexports.minValue = isSafeInteger(Number.MIN_VALUE)\n// => false\n\nexports.infinity = isSafeInteger(Infinity)\n// => false\n\nexports.string = isSafeInteger('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isSafeInteger/notes.md",
"content": "Checks if value is a safe integer. An integer is safe if it's an IEEE-754 double precision number which isn't the result of a rounded unsafe integer.\n\nResources: [Number.isSafeInteger](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger)\n"
},
{
"path": "src/content/lodash/lang/isSafeInteger/spec.js",
"content": "const expected = {\n number: true,\n minValue: false,\n infinity: false,\n string: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isSafeInteger', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isSafeInteger/vanilla.js",
"content": "const isSafeInteger = n => Number.isSafeInteger(n)\n\nexports.number = isSafeInteger(3)\n// => true\n\nexports.minValue = isSafeInteger(Number.MIN_VALUE)\n// => false\n\nexports.infinity = isSafeInteger(Infinity)\n// => false\n\nexports.string = isSafeInteger('3')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isSet/lodash.js",
"content": "// https://lodash.com/docs/#isSet\nimport { isSet } from 'lodash'\n\nexports.setValue = isSet(new Set())\n// => true\n\nexports.weakSetValue = isSet(new WeakSet())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isSet/notes.md",
"content": "Checks if value is an instance of Set.\n\nResources: [Node.js](https://nodejs.org/api/util.html#utiltypesissetvalue) [node-util](https://github.com/browserify/node-util/)\n"
},
{
"path": "src/content/lodash/lang/isSet/spec.js",
"content": "const expected = {\n setValue: true,\n weakSetValue: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isSet', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isSet/vanilla.js",
"content": "// Since Node.js v10+, it's available in the util library\n// https://nodejs.org/api/util.html##util_util_types_isset_value\n//\n// This implementation is a simplified version of the one found\n// in the polyfill module node-util (and it doesn't support IE)\nconst isSet = value => value.toString() === '[object Set]'\n\nexports.setValue = isSet(new Set())\n// => true\n\nexports.weakSetValue = isSet(new WeakSet())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isString/lodash.js",
"content": "// https://lodash.com/docs/#isString\nimport { isString } from 'lodash'\n\nexports.string = isString('abc')\n// => true\n\nexports.notString = isString(1)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isString/notes.md",
"content": "Checks if value is classified as a String primitive or object.\n\nResources: [typeof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/typeof)\n"
},
{
"path": "src/content/lodash/lang/isString/spec.js",
"content": "const expected = {\n string: true,\n notString: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isString', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isString/vanilla.js",
"content": "const isString = a => typeof a === 'string'\n\nexports.string = isString('abc')\n// => true\n\nexports.notString = isString(1)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isSymbol/lodash.js",
"content": "// https://lodash.com/docs/#isSymbol\nimport { isSymbol } from 'lodash'\n\nexports.symbolValue = isSymbol(Symbol.iterator)\n// => true\n\nexports.notSymbolValue = isSymbol('abc')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isSymbol/notes.md",
"content": "Checks if value is an instance of Symbol.\n"
},
{
"path": "src/content/lodash/lang/isSymbol/spec.js",
"content": "const expected = {\n symbolValue: true,\n notSymbolValue: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isSymbol', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isSymbol/vanilla.js",
"content": "const isSymbol = symbolMaybe => typeof symbolMaybe === 'symbol'\n\nexports.symbolValue = isSymbol(Symbol.iterator)\n// => true\n\nexports.notSymbolValue = isSymbol('abc')\n// => false\n"
},
{
"path": "src/content/lodash/lang/isTypedArray/lodash.js",
"content": "import { isTypedArray } from 'util/types'\n\nexports.uint8Array = isTypedArray(new Uint8Array())\n// => true\n\nexports.float64Array = isTypedArray(new Float64Array())\n// => true\n\nexports.arrayBuffer = isTypedArray(new ArrayBuffer())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isTypedArray/notes.md",
"content": "Checks if value is classified as a typed array.\n\nResources: [Node.js](https://nodejs.org/api/util.html#utiltypesistypedarrayvalue) [underscore.js](https://underscorejs.org/docs/modules/isTypedArray.html)\n"
},
{
"path": "src/content/lodash/lang/isTypedArray/spec.js",
"content": "const expected = {\n uint8Array: true,\n float64Array: true,\n arrayBuffer: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isTypedArray', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isTypedArray/vanilla.js",
"content": "// Since Node.js v10+, it's available in the util library\n// https://nodejs.org/api/util.html#utiltypesistypedarrayvalue\n//\n// This implementation is a simplified version of the one found\n// in underscore.js (and it doesn't support IE some early Edge versions)\n\n// the Regex tests on whether the Object.toString of the array passed matches any\n// typed array. I.e.: [object Int32Array] or [object Float64Array]\nconst typedArrayPattern =\n /\\[object ((I|Ui)nt(8|16|32)|Float(32|64)|Uint8Clamped|Big(I|Ui)nt64)Array\\]/\n\nconst isTypedArray = value =>\n typedArrayPattern.test(Object.prototype.toString.call(value))\n\nexports.uint8Array = isTypedArray(new Uint8Array())\n// => true\n\nexports.float64Array = isTypedArray(new Float64Array())\n// => true\n\nexports.arrayBuffer = isTypedArray(new ArrayBuffer())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isUndefined/lodash.js",
"content": "// https://lodash.com/docs/#isUndefined\nimport { isUndefined } from 'lodash'\n\nexports.undefVal = isUndefined(undefined)\n// => true\n\nexports.nullVal = isUndefined(null)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isUndefined/notes.md",
"content": "Checks if value is undefined.\n\nResources: [Equality comparisons](https://developer.mozilla.org/docs/Web/JavaScript/Equality_comparisons_and_sameness)\n"
},
{
"path": "src/content/lodash/lang/isUndefined/spec.js",
"content": "const expected = {\n nullVal: false,\n undefVal: true,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isUndefined', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isUndefined/vanilla.js",
"content": "const isUndefined = val => val === undefined\n\nexports.undefVal = isUndefined(undefined)\n// => true\n\nexports.nullVal = isUndefined(null)\n// => false\n"
},
{
"path": "src/content/lodash/lang/isWeakMap/lodash.js",
"content": "// https://lodash.com/docs/#isWeakMap\nimport { isWeakMap } from 'lodash'\n\nexports.weakMapValue = isWeakMap(new WeakMap())\n// => true\n\nexports.weakSetValue = isWeakMap(new WeakSet())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isWeakMap/notes.md",
"content": "Checks if value is an instance of WeakMap.\n\nResources: [Node.js](https://nodejs.org/api/util.html#utiltypesisweakmapvalue) [node-util](https://github.com/browserify/node-util/)\n"
},
{
"path": "src/content/lodash/lang/isWeakMap/spec.js",
"content": "const expected = {\n weakMapValue: true,\n weakSetValue: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isSet', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isWeakMap/vanilla.js",
"content": "// Since Node.js v10+, it's available in the util library\n// https://nodejs.org/api/util.html##utiltypesisweakmapvalue\n//\n// This implementation is a simplified version of the one found\n// in the polyfill module node-util (and it doesn't support IE)\nconst isWeakMap = value => value.toString() === '[object WeakMap]'\n\nexports.weakMapValue = isWeakMap(new WeakMap())\n// => true\n\nexports.weakSetValue = isWeakMap(new WeakSet())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isWeakSet/lodash.js",
"content": "// https://lodash.com/docs/#isWeakSet\nimport { isWeakSet } from 'lodash'\n\nexports.weakSetValue = isWeakSet(new WeakSet())\n// => true\n\nexports.weakMapValue = isWeakSet(new WeakMap())\n// => false\n"
},
{
"path": "src/content/lodash/lang/isWeakSet/notes.md",
"content": "Checks if value is an instance of WeakSet.\n\nResources: [Node.js](https://nodejs.org/api/util.html#utiltypesisweaksetvalue) [node-util](https://github.com/browserify/node-util/)\n"
},
{
"path": "src/content/lodash/lang/isWeakSet/spec.js",
"content": "const expected = {\n weakMapValue: false,\n weakSetValue: true,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('isWeakSet', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/isWeakSet/vanilla.js",
"content": "// Since Node.js v10+, it's available in the util library\n// https://nodejs.org/api/util.html#utiltypesisweaksetvalue\n//\n// This implementation is a simplified version of the one found\n// in the polyfill module node-util (and it doesn't support IE)\n\nconst isWeakSet = value => value.toString() === '[object WeakSet]'\n\nexports.weakSetValue = isWeakSet(new WeakSet())\n// => true\n\nexports.weakMapValue = isWeakSet(new WeakMap())\n// => false\n"
},
{
"path": "src/content/lodash/lang/lt/lodash.js",
"content": "// https://lodash.com/docs/#lt\nimport { lt } from 'lodash'\n\nexports.default = lt(1, 3)\n// => true\n\nexports.equal = lt(3, 3)\n// => false\n\nexports.flase = lt(3, 1)\n// => false\n"
},
{
"path": "src/content/lodash/lang/lt/notes.md",
"content": "Checks if value is less than other.\n\nResources: [Comparison Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)\n"
},
{
"path": "src/content/lodash/lang/lt/spec.js",
"content": "const expected = {\n default: true,\n equal: false,\n flase: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('lt', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/lt/vanilla.js",
"content": "const lt = (a, b) => a < b\n\nexports.default = lt(1, 3)\n// => true\n\nexports.equal = lt(3, 3)\n// => false\n\nexports.flase = lt(3, 1)\n// => false\n"
},
{
"path": "src/content/lodash/lang/lte/lodash.js",
"content": "// https://lodash.com/docs/#lte\nimport { lte } from 'lodash'\n\nexports.default = lte(1, 3)\n// => true\n\nexports.equal = lte(3, 3)\n// => true\n\nexports.flase = lte(3, 1)\n// => false\n"
},
{
"path": "src/content/lodash/lang/lte/notes.md",
"content": "Checks if value is less than or equal to other.\n\nResources: [Comparison Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Comparison_Operators)\n"
},
{
"path": "src/content/lodash/lang/lte/spec.js",
"content": "const expected = {\n default: true,\n equal: true,\n flase: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('lt', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/lang/lte/vanilla.js",
"content": "const lte = (a, b) => a <= b\n\nexports.default = lte(1, 3)\n// => true\n\nexports.equal = lte(3, 3)\n// => false\n\nexports.flase = lte(3, 1)\n// => false\n"
},
{
"path": "src/content/lodash/math/add/lodash.js",
"content": "// https://lodash.com/docs/#add\nimport { add } from 'lodash'\n\nmodule.exports = add(6, 4)\n// => 10\n"
},
{
"path": "src/content/lodash/math/add/notes.md",
"content": "Adds two numbers.\n"
},
{
"path": "src/content/lodash/math/add/spec.js",
"content": "const expected = 10\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('add', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/add/vanilla.js",
"content": "const add = (a, b) => a + b\n\nmodule.exports = add(6, 4)\n// => 10\n"
},
{
"path": "src/content/lodash/math/ceil/lodash.js",
"content": "// https://lodash.com/docs/#ceil\nimport { ceil } from 'lodash'\n\nexports.ceil = ceil(4.006)\n// => 5\n\nexports.precision = ceil(6.004, 2)\n// => 6.01\n\nexports.negPrecision = ceil(6040, -2)\n// => 6100\n"
},
{
"path": "src/content/lodash/math/ceil/notes.md",
"content": "Computes number rounded up to precision.\n\nResources: [Assignment Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Assignment_Operators#Exponentiation_assignment)\n"
},
{
"path": "src/content/lodash/math/ceil/spec.js",
"content": "const expected = {\n ceil: 5,\n precision: 6.01,\n negPrecision: 6100,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('ceil', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/ceil/vanilla.js",
"content": "const ceil = (num, precision) => {\n const modifier = 10 ** precision\n return Math.ceil(num * modifier) / modifier\n}\n\nexports.ceil = Math.ceil(4.006)\n// => 5\n\nexports.precision = ceil(6.004, 2)\n// => 6.01\n\nexports.negPrecision = ceil(6040, -2)\n// => 6100\n"
},
{
"path": "src/content/lodash/math/divide/lodash.js",
"content": "// https://lodash.com/docs/#divide\nimport { divide } from 'lodash'\n\nmodule.exports = divide(6, 4)\n// => 1.5\n"
},
{
"path": "src/content/lodash/math/divide/notes.md",
"content": "Divide two numbers.\n"
},
{
"path": "src/content/lodash/math/divide/spec.js",
"content": "const expected = 1.5\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('divide', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/divide/vanilla.js",
"content": "const divide = (a, b) => a / b\n\nmodule.exports = divide(6, 4)\n// => 1.5\n"
},
{
"path": "src/content/lodash/math/floor/lodash.js",
"content": "// https://lodash.com/docs/#floor\nimport { floor } from 'lodash'\n\nexports.floor = floor(4.006)\n// => 4\n\nexports.precision = floor(0.046, 2)\n// => 0.04\n\nexports.negPrecision = floor(4060, -2)\n// => 4000\n"
},
{
"path": "src/content/lodash/math/floor/notes.md",
"content": "Computes number rounded down to precision.\n\nResources: [Assignment Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Assignment_Operators#Exponentiation_assignment)\n"
},
{
"path": "src/content/lodash/math/floor/spec.js",
"content": "const expected = {\n floor: 4,\n precision: 0.04,\n negPrecision: 4000,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('floor', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/floor/vanilla.js",
"content": "const floor = (num, precision) => {\n const modifier = 10 ** precision\n return Math.floor(num * modifier) / modifier\n}\n\nexports.floor = Math.floor(4.006)\n// => 4\n\nexports.precision = floor(0.046, 2)\n// => 0.04\n\nexports.negPrecision = floor(4060, -2)\n// => 4000\n"
},
{
"path": "src/content/lodash/math/max/lodash.js",
"content": "// https://lodash.com/docs/#max\nimport { max } from 'lodash'\n\nexports.max = max([4, 2, 8, 6])\n// => 8\n\nexports.undefined = max([])\n// => undefined\n"
},
{
"path": "src/content/lodash/math/max/notes.md",
"content": "Computes the maximum value of array. If array is empty or falsey, undefined is returned.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/math/max/spec.js",
"content": "const expected = {\n max: 8,\n undefined,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('max', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/max/vanilla.js",
"content": "const max = nums => {\n if (nums.length) return Math.max(...nums)\n}\n\nexports.max = max([4, 2, 8, 6])\n// => 8\n\nexports.undefined = max([])\n// => undefined\n"
},
{
"path": "src/content/lodash/math/maxBy/lodash.js",
"content": "// https://lodash.com/docs/#maxBy\nimport { maxBy } from 'lodash'\n\nconst objects = [{ n: 1 }, { n: 2 }]\n\nmodule.exports = maxBy(objects, o => o.n)\n// => { 'n': 2 }\n"
},
{
"path": "src/content/lodash/math/maxBy/notes.md",
"content": "This method is like \\_.max except that it accepts iteratee which is invoked for each element in array to generate the criterion by which the value is ranked. The iteratee is invoked with one argument: (value).\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/math/maxBy/spec.js",
"content": "const expected = { n: 2 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('maxBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/maxBy/vanilla.js",
"content": "const maxBy = (arr, func) => {\n const max = Math.max(...arr.map(func))\n return arr.find(item => func(item) === max)\n}\n\nconst objects = [{ n: 1 }, { n: 2 }]\n\nmodule.exports = maxBy(objects, o => o.n)\n// => { 'n': 2 }\n"
},
{
"path": "src/content/lodash/math/mean/lodash.js",
"content": "// https://lodash.com/docs/#mean\nimport { mean } from 'lodash'\n\nmodule.exports = mean([4, 2, 8, 6])\n// => 5\n"
},
{
"path": "src/content/lodash/math/mean/notes.md",
"content": "Computes the mean of the values in array.\n\nResources: [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/math/mean/spec.js",
"content": "const expected = 5\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('mean', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/mean/vanilla.js",
"content": "const mean = arr => arr.reduce((acc, num) => acc + num, 0) / arr.length\n\nmodule.exports = mean([4, 2, 8, 6])\n// => 5\n"
},
{
"path": "src/content/lodash/math/meanBy/lodash.js",
"content": "// https://lodash.com/docs/#meanBy\nimport { meanBy } from 'lodash'\n\nconst objects = [{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }]\n\nmodule.exports = meanBy(objects, o => o.n)\n// => 5\n"
},
{
"path": "src/content/lodash/math/meanBy/notes.md",
"content": "This method is like \\_.mean except that it accepts iteratee which is invoked for each element in array to generate the value to be averaged. The iteratee is invoked with one argument: (value).\n\nResources: [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/math/meanBy/spec.js",
"content": "const expected = 5\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('meanBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/meanBy/vanilla.js",
"content": "const meanBy = (arr, func) =>\n arr.reduce((acc, item) => acc + func(item), 0) / arr.length\n\nconst objects = [{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }]\n\nmodule.exports = meanBy(objects, o => o.n)\n// => 5\n"
},
{
"path": "src/content/lodash/math/min/lodash.js",
"content": "// https://lodash.com/docs/#min\nimport { min } from 'lodash'\n\nexports.min = min([4, 2, 8, 6])\n// => 2\n\nexports.undefined = min([])\n// => undefined\n"
},
{
"path": "src/content/lodash/math/min/notes.md",
"content": "Computes the minimum value of array. If array is empty or falsey, undefined is returned.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/math/min/spec.js",
"content": "const expected = {\n min: 2,\n undefined,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('min', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/min/vanilla.js",
"content": "const min = nums => {\n if (nums.length) return Math.min(...nums)\n}\n\nexports.min = min([4, 2, 8, 6])\n// => 2\n\nexports.undefined = min([])\n// => undefined\n"
},
{
"path": "src/content/lodash/math/minBy/lodash.js",
"content": "// https://lodash.com/docs/#minBy\nimport { minBy } from 'lodash'\n\nconst objects = [{ n: 1 }, { n: 2 }]\n\nmodule.exports = minBy(objects, o => o.n)\n// => { 'n': 1 }\n"
},
{
"path": "src/content/lodash/math/minBy/notes.md",
"content": "This method is like \\_.min except that it accepts iteratee which is invoked for each element in array to generate the criterion by which the value is ranked. The iteratee is invoked with one argument: (value).\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/math/minBy/spec.js",
"content": "const expected = { n: 1 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('sumBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/minBy/vanilla.js",
"content": "const minBy = (arr, func) => {\n const min = Math.min(...arr.map(func))\n return arr.find(item => func(item) === min)\n}\n\nconst objects = [{ n: 1 }, { n: 2 }]\n\nmodule.exports = minBy(objects, o => o.n)\n// => { 'n': 1 }\n"
},
{
"path": "src/content/lodash/math/multiply/lodash.js",
"content": "// https://lodash.com/docs/#multiply\nimport { multiply } from 'lodash'\n\nmodule.exports = multiply(6, 4)\n// => 24\n"
},
{
"path": "src/content/lodash/math/multiply/notes.md",
"content": "Multiply two numbers.\n"
},
{
"path": "src/content/lodash/math/multiply/spec.js",
"content": "const expected = 24\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('multiply', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/multiply/vanilla.js",
"content": "const multiply = (a, b) => a * b\n\nmodule.exports = multiply(6, 4)\n// => 24\n"
},
{
"path": "src/content/lodash/math/round/lodash.js",
"content": "// https://lodash.com/docs/#round\nimport { round } from 'lodash'\n\nexports.round = round(4.006)\n// => 4\n\nexports.precision = round(4.006, 2)\n// => 4.01\n\nexports.negPrecision = round(4060, -2)\n// => 4100\n"
},
{
"path": "src/content/lodash/math/round/notes.md",
"content": "Computes number rounded to precision.\n\nResources: [Assignment Operators](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Assignment_Operators#Exponentiation_assignment)\n"
},
{
"path": "src/content/lodash/math/round/spec.js",
"content": "const expected = {\n round: 4,\n precision: 4.01,\n negPrecision: 4100,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('round', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/round/vanilla.js",
"content": "const round = (num, precision) => {\n const modifier = 10 ** precision\n return Math.round(num * modifier) / modifier\n}\n\nexports.round = Math.round(4.006)\n// => 4\n\nexports.precision = round(4.006, 2)\n// => 4.01\n\nexports.negPrecision = round(4060, -2)\n// => 4100\n"
},
{
"path": "src/content/lodash/math/subtract/lodash.js",
"content": "// https://lodash.com/docs/#subtract\nimport { subtract } from 'lodash'\n\nmodule.exports = subtract(6, 4)\n// => 2\n"
},
{
"path": "src/content/lodash/math/subtract/notes.md",
"content": "Subtract two numbers.\n"
},
{
"path": "src/content/lodash/math/subtract/spec.js",
"content": "const expected = 2\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('subtract', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/subtract/vanilla.js",
"content": "const subtract = (a, b) => a - b\n\nmodule.exports = subtract(6, 4)\n// => 2\n"
},
{
"path": "src/content/lodash/math/sum/lodash.js",
"content": "// https://lodash.com/docs/#sum\nimport { sum } from 'lodash'\n\nmodule.exports = sum([4, 2, 8, 6])\n// => 20\n"
},
{
"path": "src/content/lodash/math/sum/notes.md",
"content": "Computes the sum of the values in array.\n\nResources: [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/math/sum/spec.js",
"content": "const expected = 20\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('sum', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/sum/vanilla.js",
"content": "module.exports = [4, 2, 8, 6].reduce((acc, num) => {\n acc += num\n return acc\n}, 0)\n// => 20\n"
},
{
"path": "src/content/lodash/math/sumBy/lodash.js",
"content": "// https://lodash.com/docs/#sumBy\nimport { sumBy } from 'lodash'\n\nconst objects = [{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }]\n\nmodule.exports = sumBy(objects, o => o.n)\n// => 20\n"
},
{
"path": "src/content/lodash/math/sumBy/notes.md",
"content": "This method is like \\_.sum except that it accepts iteratee which is invoked for each element in array to generate the value to be summed. The iteratee is invoked with one argument: (value).\n\nResources: [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/math/sumBy/spec.js",
"content": "const expected = 20\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('sumBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/math/sumBy/vanilla.js",
"content": "const sumBy = (arr, func) => arr.reduce((acc, item) => acc + func(item), 0)\n\nconst objects = [{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }]\n\nmodule.exports = sumBy(objects, o => o.n)\n// => 20\n"
},
{
"path": "src/content/lodash/number/clamp/lodash.js",
"content": "// https://lodash.com/docs/#clamp\nimport { clamp } from 'lodash'\n\nexports.noOptionalArg = clamp(-10, -5)\n// => -10\n\nexports.lower = clamp(-10, -5, 5)\n// => -5\n\nexports.higher = clamp(10, -5, 5)\n// => 5\n"
},
{
"path": "src/content/lodash/number/clamp/notes.md",
"content": "Clamps number within the inclusive lower and upper bounds.\n"
},
{
"path": "src/content/lodash/number/clamp/spec.js",
"content": "const expected = {\n noOptionalArg: -10,\n higher: 5,\n lower: -5,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('clamp', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/number/clamp/vanilla.js",
"content": "const clamp = (num, clamp, higher) =>\n higher ? Math.min(Math.max(num, clamp), higher) : Math.min(num, clamp)\n\nexports.noOptionalArg = clamp(-10, -5)\n// => -10\n\nexports.lower = clamp(-10, -5, 5)\n// => -5\n\nexports.higher = clamp(10, -5, 5)\n// => 5\n"
},
{
"path": "src/content/lodash/number/inRange/lodash.js",
"content": "// https://lodash.com/docs/#inRange\nimport { inRange } from 'lodash'\n\nexports.example1 = inRange(3, 2, 4)\n// => true\n\nexports.example2 = inRange(4, 8)\n// => true\n\nexports.example3 = inRange(4, 2)\n// => false\n\nexports.example4 = inRange(2, 2)\n// => false\n\nexports.example5 = inRange(1.2, 2)\n// => true\n\nexports.example6 = inRange(5.2, 4)\n// => false\n\nexports.example7 = inRange(-3, -2, -6)\n// => true\n"
},
{
"path": "src/content/lodash/number/inRange/notes.md",
"content": "Checks if n is between start and up to, but not including, end. If end is not specified, it's set to start with start then set to 0. If start is greater than end the params are swapped to support negative ranges.\n\nResources: [Default parameters](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Functions/Default_parameters)\n"
},
{
"path": "src/content/lodash/number/inRange/spec.js",
"content": "const expected = {\n example1: true,\n example2: true,\n example3: false,\n example4: false,\n example5: true,\n example6: false,\n example7: true,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('inRange', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/number/inRange/vanilla.js",
"content": "const inRange = (num, rangeStart, rangeEnd = 0) =>\n (rangeStart < num && num < rangeEnd) || (rangeEnd < num && num < rangeStart)\n\nexports.example1 = inRange(3, 2, 4)\n// => true\n\nexports.example2 = inRange(4, 8)\n// => true\n\nexports.example3 = inRange(4, 2)\n// => false\n\nexports.example4 = inRange(2, 2)\n// => false\n\nexports.example5 = inRange(1.2, 2)\n// => true\n\nexports.example6 = inRange(5.2, 4)\n// => false\n\nexports.example7 = inRange(-3, -2, -6)\n// => true\n"
},
{
"path": "src/content/lodash/number/random/lodash.js",
"content": "// https://lodash.com/docs/#random\nimport { random } from 'lodash'\n\nexports.integer05 = random(0, 5)\n// => an integer between 0 and 5\n\nexports.integer5 = random(5)\n// => also an integer between 0 and 5\n\nexports.floating5 = random(5, true)\n// => a floating-point number between 0 and 5\n\nexports.floating = random(1.2, 5.2)\n// => a floating-point number between 1.2 and 5.2\n\nexports.integer = random()\n// => 0 or 1\n\nexports.negative = random(-1)\n// => -1 or 0\n"
},
{
"path": "src/content/lodash/number/random/notes.md",
"content": "Produces a random number between the inclusive lower and upper bounds. If only one argument is provided a number between 0 and the given number is returned. If floating is true, or either lower or upper are floats, a floating-point number is returned instead of an integer.
Note: JavaScript follows the IEEE-754 standard for resolving floating-point values which can produce unexpected results.\n\nResources: [Number.isInteger](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger) [isNaN](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/isNaN)\n"
},
{
"path": "src/content/lodash/number/random/spec.js",
"content": "const lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('random(0, 5)', () => {\n expect(lodash.integer05).toBeGreaterThanOrEqual(0)\n expect(plain.integer05).toBeGreaterThanOrEqual(0)\n expect(lodash.integer05).toBeLessThanOrEqual(5)\n expect(plain.integer05).toBeLessThanOrEqual(5)\n expect([0, 1, 2, 3, 4, 5]).toContain(lodash.integer05)\n expect([0, 1, 2, 3, 4, 5]).toContain(plain.integer05)\n})\n\ntest('random(5)', () => {\n expect(lodash.integer5).toBeGreaterThanOrEqual(0)\n expect(plain.integer5).toBeGreaterThanOrEqual(0)\n expect(lodash.integer5).toBeLessThanOrEqual(5)\n expect(plain.integer5).toBeLessThanOrEqual(5)\n expect([0, 1, 2, 3, 4, 5]).toContain(lodash.integer5)\n expect([0, 1, 2, 3, 4, 5]).toContain(plain.integer5)\n})\n\ntest('random(5, true)', () => {\n expect(lodash.floating5).toBeGreaterThanOrEqual(0)\n expect(plain.floating5).toBeGreaterThanOrEqual(0)\n expect(lodash.floating5).toBeLessThanOrEqual(5)\n expect(plain.floating5).toBeLessThanOrEqual(5)\n expect([0, 1, 2, 3, 4, 5]).not.toContain(lodash.floating5)\n expect([0, 1, 2, 3, 4, 5]).not.toContain(plain.floating5)\n})\n\ntest('random(1.2, 5.2)', () => {\n expect(lodash.floating).toBeGreaterThanOrEqual(1.2)\n expect(plain.floating).toBeGreaterThanOrEqual(1.2)\n expect(lodash.floating).toBeLessThanOrEqual(5.2)\n expect(plain.floating).toBeLessThanOrEqual(5.2)\n expect([0, 1, 2, 3, 4, 5]).not.toContain(lodash.floating)\n expect([0, 1, 2, 3, 4, 5]).not.toContain(plain.floating)\n})\n\ntest('random()', () => {\n expect([0, 1]).toContain(lodash.integer)\n expect([0, 1]).toContain(plain.integer)\n})\n\ntest('random(-1)', () => {\n expect(lodash.negative).toBeLessThanOrEqual(0)\n expect(plain.negative).toBeLessThanOrEqual(0)\n expect([0, -1]).toContain(lodash.negative)\n expect([0, -1]).toContain(plain.negative)\n})\n"
},
{
"path": "src/content/lodash/number/random/vanilla.js",
"content": "const random = (lower = 0, upper, floating) => {\n if (typeof upper === 'boolean') {\n floating = upper\n }\n\n if (isNaN(upper)) {\n upper = lower < 0 ? 0 : 1\n }\n\n if (typeof floating === 'undefined') {\n floating = !Number.isInteger(lower) || !Number.isInteger(upper)\n }\n\n const randomNumber = Math.random() * (upper - lower) + lower\n return floating ? randomNumber : Math.round(randomNumber)\n}\n\nexports.integer05 = random(0, 5)\n// => an integer between 0 and 5\n\nexports.integer5 = random(5)\n// => also an integer between 0 and 5\n\nexports.floating5 = random(5, true)\n// => a floating-point number between 0 and 5\n\nexports.floating = random(1.2, 5.2)\n// => a floating-point number between 1.2 and 5.2\n\nexports.integer = random()\n// => 0 or 1\n\nexports.negative = random(-1)\n// => -1 or 0\n"
},
{
"path": "src/content/lodash/object/assign/lodash.js",
"content": "// https://lodash.com/docs/#assign\nimport { assign } from 'lodash'\n\nfunction Foo() {\n this.a = 1\n}\n\nfunction Bar() {\n this.c = 3\n}\n\nFoo.prototype.b = 2\nBar.prototype.d = 4\n\nmodule.exports = assign({ a: 0 }, new Foo(), new Bar())\n// => { 'a': 1, 'c': 3 }\n"
},
{
"path": "src/content/lodash/object/assign/notes.md",
"content": "Assigns own enumerable string keyed properties of source objects to the destination object. Source objects are applied from left to right. Subsequent sources overwrite property assignments of previous sources.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax)\n"
},
{
"path": "src/content/lodash/object/assign/spec.js",
"content": "const expected = { a: 1, c: 3 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('assign', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/assign/vanilla.js",
"content": "function Foo() {\n this.a = 1\n}\n\nfunction Bar() {\n this.c = 3\n}\n\nFoo.prototype.b = 2\nBar.prototype.d = 4\n\nmodule.exports = { a: 0, ...new Foo(), ...new Bar() }\n// => { 'a': 1, 'c': 3 }\n"
},
{
"path": "src/content/lodash/object/create/lodash.js",
"content": "// https://lodash.com/docs/#create\nimport { create } from 'lodash'\n\nfunction Shape() {\n this.x = 0\n this.y = 0\n}\n\nfunction Circle() {\n Shape.call(this)\n}\n\nCircle.prototype = create(Shape.prototype, {\n constructor: Circle,\n})\n\nconst circle = new Circle()\nexports.circle = circle instanceof Circle\n// => true\n\nexports.shape = circle instanceof Shape\n// => true\n"
},
{
"path": "src/content/lodash/object/create/notes.md",
"content": "Creates an object that inherits from the prototype object. If a properties object is given, its own enumerable string keyed properties are assigned to the created object.\n\nResources: [Object.assign](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign) [Object.create](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/create) [instanceof](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/instanceof)\n"
},
{
"path": "src/content/lodash/object/create/spec.js",
"content": "const expected = {\n circle: true,\n shape: true,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('create', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/create/vanilla.js",
"content": "function Shape() {\n this.x = 0\n this.y = 0\n}\n\nfunction Circle() {\n Shape.call(this)\n}\n\nCircle.prototype = Object.assign(Object.create(Shape.prototype), {\n constructor: Circle,\n})\n\nconst circle = new Circle()\nexports.circle = circle instanceof Circle\n// => true\n\nexports.shape = circle instanceof Shape\n// => true\n"
},
{
"path": "src/content/lodash/object/defaults/lodash.js",
"content": "// https://lodash.com/docs/#defaults\nimport { defaults } from 'lodash'\n\nmodule.exports = defaults({ a: 1 }, { b: 2 }, { a: 3 })\n// // => { 'a': 1, 'b': 2 }\n"
},
{
"path": "src/content/lodash/object/defaults/notes.md",
"content": "Assigns own and inherited enumerable string keyed properties of source objects to the destination object for all destination properties that resolve to undefined. Source objects are applied from left to right. Once a property is set, additional values of the same property are ignored.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#reverse](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse) [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/object/defaults/spec.js",
"content": "const expected = { a: 1, b: 2 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('defaults', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/defaults/vanilla.js",
"content": "const defaults = (...args) =>\n args.reverse().reduce((acc, obj) => ({ ...acc, ...obj }), {})\n\nmodule.exports = defaults({ a: 1 }, { b: 2 }, { a: 3 })\n// // => { 'a': 1, 'b': 2 }\n"
},
{
"path": "src/content/lodash/object/get/lodash.js",
"content": "// https://lodash.com/docs/#get\nimport { get } from 'lodash'\n\nconst simpleObject = { a: { b: 2 } }\nconst complexObject = { a: [{ bar: { c: 3 } }] }\nconst falsyObject = { a: null, b: undefined, c: 0 }\n\nexports.simplePath = get(simpleObject, 'a.b')\n// => 2\nexports.complexPath = get(complexObject, 'a[0].bar.c')\n// => 3\nexports.complexPathArray = get(complexObject, ['a', '0', 'bar', 'c'])\n// => 2\nexports.simpleDefault = get(simpleObject, 'a.bar.c', 'default')\n// => 'default'\nexports.complexDefault = get(complexObject, 'a.bar.c', 'default')\n// => 'default'\nexports.falseCase = get(complexObject, null)\n// => undefined\nexports.nullCase = get(falsyObject, 'a', 'default')\n// => null\nexports.undefinedCase = get(falsyObject, 'b', 'default')\n// => undefined\nexports.zeroCase = get(falsyObject, 'c', 'default')\n// => zero\n"
},
{
"path": "src/content/lodash/object/get/notes.md",
"content": "Gets the value at path of object. If the resolved value is undefined, the defaultValue is returned in its place.\n\nResources: [Array.isArray](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray) [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce) [Array#filter](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) [xkcd](https://xkcd.com/1171/)\n"
},
{
"path": "src/content/lodash/object/get/spec.js",
"content": "const expected = {\n simplePath: 2,\n complexPath: 3,\n complexPathArray: 3,\n simpleDefault: 'default',\n complexDefault: 'default',\n falseCase: undefined,\n nullCase: null,\n zeroCase: 0,\n undefinedCase: 'default',\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('get', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/get/vanilla.js",
"content": "const get = (obj, path, defValue) => {\n // If path is not defined or it has false value\n if (!path) return undefined\n // Check if path is string or array. Regex : ensure that we do not have '.' and brackets.\n // Regex explained: https://regexr.com/58j0k\n const pathArray = Array.isArray(path) ? path : path.match(/([^[.\\]])+/g)\n // Find value\n const result = pathArray.reduce(\n (prevObj, key) => prevObj && prevObj[key],\n obj\n )\n // If found value is undefined return default value; otherwise return the value\n return result === undefined ? defValue : result\n}\n\nconst simpleObject = { a: { b: 2 } }\nconst complexObject = { a: [{ bar: { c: 3 } }] }\nconst falsyObject = { a: null, b: undefined, c: 0 }\n\nexports.simplePath = get(simpleObject, 'a.b')\n// => 2\nexports.complexPath = get(complexObject, 'a[0].bar.c')\n// => 3\nexports.complexPathArray = get(complexObject, ['a', '0', 'bar', 'c'])\n// => 2\nexports.simpleDefault = get(simpleObject, 'a.bar.c', 'default')\n// => 'default'\nexports.complexDefault = get(complexObject, 'a.bar.c', 'default')\n// => 'default\nexports.falseCase = get(complexObject, null)\n// => undefined\nexports.nullCase = get(falsyObject, 'a', 'default')\n// => null\nexports.undefinedCase = get(falsyObject, 'b', 'default')\n// => undefined\nexports.zeroCase = get(falsyObject, 'c', 'default')\n// => zero\n"
},
{
"path": "src/content/lodash/object/has/lodash.js",
"content": "// https://lodash.com/docs/#has\nimport { has } from 'lodash'\n\nconst object = { a: { bar: 2 } }\n\nexports.simple = has(object, 'a')\n// => true\n\nexports.nested = has(object, 'a.bar')\n// => true\n\nexports.array = has(object, ['a', 'bar'])\n// => true\n\nexports.missing = has(object, ['a', 'c'])\n// => false\n"
},
{
"path": "src/content/lodash/object/has/notes.md",
"content": "Checks if path is a direct property of object.\n\nResources: [Array.isArray](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray) [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce) [xkcd](https://xkcd.com/1171/)\n"
},
{
"path": "src/content/lodash/object/has/spec.js",
"content": "const expected = {\n simple: true,\n nested: true,\n array: true,\n missing: false,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('has', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/has/vanilla.js",
"content": "const has = (obj, path) => {\n // Regex explained: https://regexr.com/58j0k\n const pathArray = Array.isArray(path) ? path : path.match(/([^[.\\]])+/g)\n\n return !!pathArray.reduce((prevObj, key) => prevObj && prevObj[key], obj)\n}\n\nconst object = { a: { bar: 2 } }\n\nexports.simple = has(object, 'a')\n// => true\n\nexports.nested = has(object, 'a.bar')\n// => true\n\nexports.array = has(object, ['a', 'bar'])\n// => true\n\nexports.missing = has(object, ['a', 'c'])\n// => false\n"
},
{
"path": "src/content/lodash/object/invert/lodash.js",
"content": "// https://lodash.com/docs/#invert\nimport { invert } from 'lodash'\n\nconst object = { a: 1, b: 2, c: 1 }\n\nmodule.exports = invert(object)\n// => { '1': 'c', '2': 'b' }\n"
},
{
"path": "src/content/lodash/object/invert/notes.md",
"content": "Creates an object composed of the inverted keys and values of object. If object contains duplicate values, subsequent values overwrite property assignments of previous values.\n\nResources: [Object.entries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n"
},
{
"path": "src/content/lodash/object/invert/spec.js",
"content": "const expected = { '1': 'c', '2': 'b' }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('invert', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/invert/vanilla.js",
"content": "const object = { a: 1, b: 2, c: 1 }\n\nmodule.exports = Object.entries(object).reduce(\n (acc, [key, value]) => ({\n ...acc,\n [value]: key,\n }),\n {}\n)\n\n// => { '1': 'c', '2': 'b' }\n"
},
{
"path": "src/content/lodash/object/keys/lodash.js",
"content": "// https://lodash.com/docs/#keys\nimport { keys } from 'lodash'\n\nfunction Foo() {\n this.a = 1\n this.b = 2\n}\n\nFoo.prototype.c = 3\n\nexports.instance = keys(new Foo())\n// => ['a', 'b'] (iteration order is not guaranteed)\n\nexports.string = keys('hi')\n// => ['0', '1']\n"
},
{
"path": "src/content/lodash/object/keys/notes.md",
"content": "Creates an array of the own enumerable property names of object.\n\nResources: [Object.keys](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/keys)\n"
},
{
"path": "src/content/lodash/object/keys/spec.js",
"content": "const expected = {\n instance: ['a', 'b'],\n string: ['0', '1'],\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('instance', () => {\n // sorting as the iteration order is not guaranteed\n expect(lodash.instance.sort()).toEqual(expected.instance)\n expect(plain.instance.sort()).toEqual(lodash.instance)\n})\n\ntest('string', () => {\n expect(lodash.string).toEqual(expected.string)\n expect(plain.string).toEqual(lodash.string)\n})\n"
},
{
"path": "src/content/lodash/object/keys/vanilla.js",
"content": "function Foo() {\n this.a = 1\n this.b = 2\n}\n\nFoo.prototype.c = 3\n\nexports.instance = Object.keys(new Foo())\n// => ['a', 'b'] (iteration order is not guaranteed)\n\nexports.string = Object.keys('hi')\n// => ['0', '1']\n"
},
{
"path": "src/content/lodash/object/mapKeys/lodash.js",
"content": "// https://lodash.com/docs/#mapKeys\nimport { mapKeys } from 'lodash'\n\nmodule.exports = mapKeys({ a: 1, b: 2 }, (value, key) => key + value)\n// => { 'a1': 1, 'b2': 2 }\n"
},
{
"path": "src/content/lodash/object/mapKeys/notes.md",
"content": "The opposite of \\_.mapValues; this method creates an object with the same values as object and keys generated by running each own enumerable string keyed property of object thru iteratee. The iteratee is invoked with three arguments: (value, key, object).\n\nResources: [Object.entries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) [Array#reduce](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce) [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Computed property names](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Object_initializer#Computed_property_names)\n"
},
{
"path": "src/content/lodash/object/mapKeys/spec.js",
"content": "const expected = { a1: 1, b2: 2 }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('mapKeys', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/mapKeys/vanilla.js",
"content": "const mapKeys = (obj, mapper) =>\n Object.entries(obj).reduce(\n (acc, [key, value]) => ({\n ...acc,\n [mapper(value, key)]: value,\n }),\n {}\n )\n\nmodule.exports = mapKeys({ a: 1, b: 2 }, (value, key) => key + value)\n// => { 'a1': 1, 'b2': 2 }\n"
},
{
"path": "src/content/lodash/object/omit/lodash.js",
"content": "// https://lodash.com/docs/#omit\nimport { omit } from 'lodash'\n\nconst object = { a: 1, b: '2', c: 3 }\n\nmodule.exports = omit(object, ['a', 'c'])\n// => { 'b': '2' }\n"
},
{
"path": "src/content/lodash/object/omit/notes.md",
"content": "The opposite of \\_.pick; this method creates an object composed of the own and inherited enumerable property paths of object that are not omitted.\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Array#forEach](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach) [Delete operator](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/delete)\n"
},
{
"path": "src/content/lodash/object/omit/spec.js",
"content": "const expected = { b: '2' }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('omit', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/omit/vanilla.js",
"content": "const omit = (obj, props) => {\n obj = { ...obj }\n props.forEach(prop => delete obj[prop])\n return obj\n}\nconst object = { a: 1, b: '2', c: 3 }\n\nmodule.exports = omit(object, ['a', 'c'])\n// => { 'b': '2' }\n"
},
{
"path": "src/content/lodash/object/omitBy/lodash.js",
"content": "// https://lodash.com/docs/#omitBy\nimport { omitBy, isNumber } from 'lodash'\n\nconst object = { a: 1, b: '2', c: 3 }\n\nmodule.exports = omitBy(object, isNumber)\n// => { 'b': '2' }\n"
},
{
"path": "src/content/lodash/object/omitBy/notes.md",
"content": "The opposite of \\_.pickBy; this method creates an object composed of the own and inherited enumerable string keyed properties of object that predicate doesn't return truthy for. The predicate is invoked with two arguments: (value, key).\n\nResources: [Spread syntax](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax) [Object.entries](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/entries) [Array#forEach](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach) [Delete operator](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/delete)\n"
},
{
"path": "src/content/lodash/object/omitBy/spec.js",
"content": "const expected = { b: '2' }\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('omitBy', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/omitBy/vanilla.js",
"content": "const isNumber = a => typeof a === 'number'\n\nconst omitBy = (obj, check) => {\n obj = { ...obj }\n Object.entries(obj).forEach(([key, value]) => check(value) && delete obj[key])\n return obj\n}\n\nconst object = { a: 1, b: '2', c: 3 }\n\nmodule.exports = omitBy(object, isNumber)\n// => { 'b': '2' }\n"
},
{
"path": "src/content/lodash/object/pick/lodash.js",
"content": "// https://lodash.com/docs/#pick\nimport { pick } from 'lodash'\n\nconst object = {\n a: 1,\n b: 2,\n c: 3,\n}\n\nmodule.exports = pick(object, ['a', 'c'])\n// => {a: 1, c: 3}\n"
},
{
"path": "src/content/lodash/object/pick/notes.md",
"content": "Creates an object composed of the picked object properties.\n\nResources: [Object destructuring](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment#Object_destructuring)\n"
},
{
"path": "src/content/lodash/object/pick/spec.js",
"content": "const expected = {\n a: 1,\n c: 3,\n}\n\nconst lodash = require('./lodash')\nconst plain = require('./vanilla')\n\ntest('pick', () => {\n expect(lodash).toEqual(expected)\n expect(plain).toEqual(lodash)\n})\n"
},
{
"path": "src/content/lodash/object/pick/vanilla.js",
"content": "const object = {\n a: 1,\n b: 2,\n c: 3,\n}\n\nconst { a, c } = object\n\nmodule.exports = { a, c }\n// => {a: 1, c: 3}\n"
},
{
"path": "src/content/lodash/object/set/lodash.js",
"content": "// https://lodash.com/docs/#set\nimport { set } from 'lodash'\n\nconst object = { a: [{ bar: { c: 3 } }] }\n\nset(object, 'a[0].bar.c', 4)\nexports.string = object.a[0].bar.c\n// => 4\n\nset(object, ['x', '0', 'y', 'z'], 5)\nexports.array = object.x[0].y.z\n// => 5\n"
},
{
"path": "src/content/lodash/object/set/notes.md",
"content": "Sets the value at path of object. If a portion of path doesn't exist, it's created. Arrays are created for missing index properties while objects are created for all other missing properties. Use \\_.setWith to customize path creation.
![](\"https://avatars.githubusercontent.com/u/415593?v=4\" "\\"cedmax\\"")
![](\"https://avatars.githubusercontent.com/u/5839225?v=4\" "\\"102\\"")
\n![](\"https://avatars.githubusercontent.com/u/435399?v=4\" "\\"sirLisko\\"")
\n![](\"https://avatars.githubusercontent.com/u/4680439?v=4\" "\\"codedbypaul\\"")
\n![](\"https://avatars.githubusercontent.com/u/24855774?v=4\" "\\"haykam821\\"")
\n![](\"https://avatars.githubusercontent.com/u/11186044?v=4\" "\\"tombiju\\"")
\n![](\"https://avatars.githubusercontent.com/u/29898106?v=4\" "\\"shubhamV123\\"")
\n![](\"https://avatars.githubusercontent.com/u/5642293?v=4\" "\\"ryanosaur\\"")
\n![](\"https://avatars.githubusercontent.com/u/1173416?v=4\" "\\"SgtPooki\\"")
\n![](\"https://avatars.githubusercontent.com/u/2362668?v=4\" "\\"rouanw\\"")
\n![](\"https://avatars.githubusercontent.com/u/752617?v=4\" "\\"martingjaldbaek\\"")
\n![](\"https://avatars.githubusercontent.com/u/8880358?v=4\" "\\"jpbriggs408\\"")
\n![](\"https://avatars.githubusercontent.com/u/456474?v=4\" "\\"jeromelachaud\\"")
\n![](\"https://avatars.githubusercontent.com/u/12970743?v=4\" "\\"harshit-sinha-developer\\"")
\n![](\"https://avatars.githubusercontent.com/u/743291?v=4\" "\\"friederbluemle\\"")
\n![](\"https://avatars.githubusercontent.com/u/971375?v=4\" "\\"fgandellini\\"")
\n![](\"https://avatars.githubusercontent.com/u/11527179?v=4\" "\\"ColinRTaylor\\"")
\n![](\"https://avatars.githubusercontent.com/u/4353965?v=4\" "\\"BrettMerri\\"")
\n![](\"https://avatars.githubusercontent.com/u/91788772?v=4\" "\\"slimcandy\\"")
\n![](\"https://avatars.githubusercontent.com/u/16475300?v=4\" "\\"ajitfawade\\"")
\n![](\"https://avatars.githubusercontent.com/u/11258517?v=4\" "\\"Adrian-Benavente\\"")
\n![](\"https://avatars.githubusercontent.com/u/6697165?v=4\" "\\"doydoy44\\"")
\n\n[//]: contributor-faces\n"
},
{
"path": "jest.setup.js",
"content": "// require('jest-mock-now')()\nconst { advanceTo } = require('jest-date-mock')\n\nadvanceTo(new Date(2014, 8, 25, 18, 30, 15, 500).getTime())\n"
},
{
"path": "modules/contributors.js",
"content": "const path = require('path')\nconst gh = require('gh-got')\nconst readmeFilename = require('readme-filename')\nconst replace = require('replace-in-file')\n\nconst customContributorList = ['doydoy44']\n\nconst generateHtml = data =>\n data.reduce(\n (html, { html_url, avatar_url, login }) =>\n html +\n `