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136 lines
7.9 KiB
136 lines
7.9 KiB
2 months ago
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<div align="center">
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[](https://opencollective.com/core-js) [](https://github.com/zloirock/core-js/blob/master/CONTRIBUTING.md) [](https://www.npmjs.com/package/core-js-compat) [](https://npm-stat.com/charts.html?package=core-js&package=core-js-pure&package=core-js-compat&from=2014-11-18)
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</div>
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**I highly recommend reading this: [So, what's next?](https://github.com/zloirock/core-js/blob/master/docs/2023-02-14-so-whats-next.md)**
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---
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[`core-js-compat` package](https://github.com/zloirock/core-js/tree/master/packages/core-js-compat) contains data about the necessity of [`core-js`](https://github.com/zloirock/core-js) modules and API for getting a list of required core-js modules by browserslist query.
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```js
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import compat from 'core-js-compat';
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const {
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list, // array of required modules
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targets, // object with targets for each module
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} = compat({
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targets: '> 1%', // browserslist query or object of minimum environment versions to support, see below
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modules: [ // optional list / filter of modules - regex, string or an array of them:
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'core-js/actual', // - an entry point
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'esnext.array.unique-by', // - a module name (or just a start of a module name)
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/^web\./, // - regex that a module name must satisfy
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],
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exclude: [ // optional list / filter of modules to exclude, the signature is similar to `modules` option
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'web.atob',
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],
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version: '3.38', // used `core-js` version, by default - the latest
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inverse: false, // inverse of the result - shows modules that are NOT required for the target environment
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});
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console.log(targets);
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/* =>
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{
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'es.error.cause': { ios: '14.5-14.8' },
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'es.aggregate-error.cause': { ios: '14.5-14.8' },
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'es.array.at': { ios: '14.5-14.8' },
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'es.array.find-last': { firefox: '100', ios: '14.5-14.8' },
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'es.array.find-last-index': { firefox: '100', ios: '14.5-14.8' },
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'es.array.includes': { firefox: '100' },
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'es.array.push': { chrome: '100', edge: '101', ios: '14.5-14.8', safari: '15.4' },
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'es.array.unshift': { ios: '14.5-14.8', safari: '15.4' },
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'es.object.has-own': { ios: '14.5-14.8' },
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'es.regexp.flags': { chrome: '100', edge: '101' },
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'es.string.at-alternative': { ios: '14.5-14.8' },
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'es.typed-array.at': { ios: '14.5-14.8' },
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'es.typed-array.find-last': { firefox: '100', ios: '14.5-14.8' },
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'es.typed-array.find-last-index': { firefox: '100', ios: '14.5-14.8' },
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'esnext.array.group': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.group-by': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.group-by-to-map': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.group-to-map': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.to-reversed': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.to-sorted': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.to-spliced': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.unique-by': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.array.with': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.typed-array.to-reversed': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.typed-array.to-sorted': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.typed-array.to-spliced': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'esnext.typed-array.with': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'web.dom-exception.stack': { chrome: '100', edge: '101', ios: '14.5-14.8', safari: '15.4' },
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'web.immediate': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' },
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'web.structured-clone': { chrome: '100', edge: '101', firefox: '100', ios: '14.5-14.8', safari: '15.4' }
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}
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*/
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```
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### `targets` option
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`targets` could be [a `browserslist` query](https://github.com/browserslist/browserslist) or a targets object that specifies minimum environment versions to support:
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```js
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// browserslist query:
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'defaults, not IE 11, maintained node versions'
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// object (sure, all those fields optional):
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{
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android: '4.0', // Android WebView version
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bun: '0.1.2', // Bun version
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chrome: '38', // Chrome version
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'chrome-android': '18', // Chrome for Android version
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deno: '1.12', // Deno version
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edge: '13', // Edge version
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electron: '5.0', // Electron framework version
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firefox: '15', // Firefox version
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'firefox-android': '4', // Firefox for Android version
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hermes: '0.11', // Hermes version
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ie: '8', // Internet Explorer version
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ios: '13.0', // iOS Safari version
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node: 'current', // NodeJS version, you can use 'current' for set it to currently used
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opera: '12', // Opera version
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'opera-android': '7', // Opera for Android version
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phantom: '1.9', // PhantomJS headless browser version
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quest: '5.0', // Meta Quest Browser version
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'react-native': '0.70', // React Native version (default Hermes engine)
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rhino: '1.7.13', // Rhino engine version
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safari: '14.0', // Safari version
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samsung: '14.0', // Samsung Internet version
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esmodules: true, // That option set target to minimum supporting ES Modules versions of all browsers
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browsers: '> 0.25%', // Browserslist query or object with target browsers
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}
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```
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### Additional API:
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```js
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// equals of of the method from the example above
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require('core-js-compat/compat')({ targets, modules, version }); // => { list: Array<ModuleName>, targets: { [ModuleName]: { [EngineName]: EngineVersion } } }
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// or
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require('core-js-compat').compat({ targets, modules, version }); // => { list: Array<ModuleName>, targets: { [ModuleName]: { [EngineName]: EngineVersion } } }
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// full compat data:
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require('core-js-compat/data'); // => { [ModuleName]: { [EngineName]: EngineVersion } }
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// or
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require('core-js-compat').data; // => { [ModuleName]: { [EngineName]: EngineVersion } }
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// map of modules by `core-js` entry points:
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require('core-js-compat/entries'); // => { [EntryPoint]: Array<ModuleName> }
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// or
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require('core-js-compat').entries; // => { [EntryPoint]: Array<ModuleName> }
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// full list of modules:
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require('core-js-compat/modules'); // => Array<ModuleName>
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// or
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require('core-js-compat').modules; // => Array<ModuleName>
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// the subset of modules which available in the passed `core-js` version:
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require('core-js-compat/get-modules-list-for-target-version')('3.38'); // => Array<ModuleName>
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// or
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require('core-js-compat').getModulesListForTargetVersion('3.38'); // => Array<ModuleName>
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```
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If you wanna help to improve this data, you could take a look at the related section of [`CONTRIBUTING.md`](https://github.com/zloirock/core-js/blob/master/CONTRIBUTING.md#how-to-update-core-js-compat-data). The visualization of compatibility data and the browser tests runner is available [here](http://zloirock.github.io/core-js/compat/), the example:
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