@bevry/ecmascript-versions

Get all ECMAScript versions, or the ECMAScript version that was ratified on a specific date.

Usage

import {
    getESVersionInformationByVersion,
    getESVersionByNow,
    getESVersionByDate,
    getESVersionsByNow,
} from '@bevry/ecmascript-versions'
// results for 2020-11-03

// get the ratification date for an ECMAScript version
console.log(getESVersionInformationByVersion('ES2020').ratified) // 2020-06-01T00:00:00.000Z

// get the edition number for an ECMAScript version
console.log(getESVersionInformationByVersion('ES2020').edition) // 11

// get the latest ECMAScript version that was ratified by current date
console.log(getESVersionByNow()) // ES2020

// get the latest ECMAScript version that was ratified by this time last year
console.log(getESVersionByDate(getDateWithYearOffset(-1))) // ES2019

// get all the latest ECMAScript versions that were ratified so far
console.log(getESVersionsByNow()) /* [
    'ES1',
    'ES2',
    'ES3',
    'ES5',
    'ES2015',
    'ES2016',
    'ES2017',
    'ES2018',
    'ES2019',
    'ES2020',
] */

Install

npm

Install: npm install --save @bevry/ecmascript-versions
Import: import * as pkg from ('@bevry/ecmascript-versions')
Require: const pkg = require('@bevry/ecmascript-versions')

Deno

import * as pkg from 'https://unpkg.com/@bevry/ecmascript-versions@^4.6.0/edition-deno/index.ts'

Skypack

<script type="module">
    import * as pkg from '//cdn.skypack.dev/@bevry/ecmascript-versions@^4.6.0'
</script>

unpkg

<script type="module">
    import * as pkg from '//unpkg.com/@bevry/ecmascript-versions@^4.6.0'
</script>

jspm

<script type="module">
    import * as pkg from '//dev.jspm.io/@bevry/ecmascript-versions@4.6.0'
</script>

Editions

This package is published with the following editions:

@bevry/ecmascript-versions aliases @bevry/ecmascript-versions/index.cjs which uses the Editions Autoloader to automatically select the correct edition for the consumer's environment
@bevry/ecmascript-versions/source/index.ts is TypeScript source code with Import for modules
@bevry/ecmascript-versions/edition-browsers/index.js is TypeScript compiled against ES2022 for web browsers with Import for modules
@bevry/ecmascript-versions/edition-es2022/index.js is TypeScript compiled against ES2022 for Node.js 21 with Require for modules
@bevry/ecmascript-versions/edition-es5/index.js is TypeScript compiled against ES5 for Node.js 4 with Require for modules
@bevry/ecmascript-versions/edition-es2022-esm/index.js is TypeScript compiled against ES2022 for Node.js 21 with Import for modules
@bevry/ecmascript-versions/edition-types/index.d.ts is TypeScript compiled Types with Import for modules
@bevry/ecmascript-versions/edition-deno/index.ts is TypeScript source code made to be compatible with Deno