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101 lines
4.6 KiB
Markdown
101 lines
4.6 KiB
Markdown
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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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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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} = require('core-js-compat')({
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targets: '> 2.5%', // browserslist query or object of minimum environment versions to support
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filter: /^(es|web)\./, // optional filter - string-prefix, regexp or list of modules
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version: '3.16', // used `core-js` version, by default - the latest
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});
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console.log(targets);
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/* =>
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{
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'es.symbol.match-all': { ios: '12.2-12.4' },
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'es.array.unscopables.flat': { ios: '12.2-12.4' },
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'es.array.unscopables.flat-map': { ios: '12.2-12.4' },
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'es.math.hypot': { chrome: '77' },
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'es.promise.all-settled': { firefox: '69', ios: '12.2-12.4' },
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'es.promise.finally': { ios: '12.2-12.4' },
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'es.string.match-all': { chrome: '77', firefox: '69', ios: '12.2-12.4' },
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'es.string.replace': { firefox: '69', ios: '12.2-12.4' },
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'es.typed-array.float32-array': { ios: '12.2-12.4' },
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'es.typed-array.float64-array': { ios: '12.2-12.4' },
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'es.typed-array.int8-array': { ios: '12.2-12.4' },
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'es.typed-array.int16-array': { ios: '12.2-12.4' },
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'es.typed-array.int32-array': { ios: '12.2-12.4' },
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'es.typed-array.uint8-array': { ios: '12.2-12.4' },
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'es.typed-array.uint8-clamped-array': { ios: '12.2-12.4' },
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'es.typed-array.uint16-array': { ios: '12.2-12.4' },
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'es.typed-array.uint32-array': { ios: '12.2-12.4' },
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'es.typed-array.from': { ios: '12.2-12.4' },
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'es.typed-array.of': { ios: '12.2-12.4' },
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'web.dom-collections.iterator': { ios: '12.2-12.4' },
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'web.immediate': { chrome: '77', firefox: '69', ios: '12.2-12.4' },
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'web.url': { ios: '12.2-12.4' },
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'web.url.to-json': { ios: '12.2-12.4' },
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'web.url-search-params': { ios: '12.2-12.4' }
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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:
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{
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android: '4.0', // Android WebView version
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chrome: '38', // Chrome 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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ie: '8', // Internet Explorer version
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ios: '13.0', // iOS Safari version
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node: 'current', // NodeJS version, you could use 'current' for set it to currently used
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opera: '12', // Opera version
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opera_mobile: '7', // Opera Mobile version
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phantom: '1.9', // PhantomJS headless browser version
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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, filter, version }); // => { list: Array<ModuleName>, targets: { [ModuleName]: { [EngineName]: EngineVersion } } }
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// or
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require('core-js-compat').compat({ targets, filter, 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')('3.16'); // => Array<ModuleName>
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// or
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require('core-js-compat').getModulesListForTargetVersion('3.16'); // => Array<ModuleName>
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```
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If you want to add new / update data about modules required for target engines, [follow this instruction](https://github.com/zloirock/core-js/blob/master/CONTRIBUTING.md#updating-core-js-compat-data).
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