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- [`core-js-compat` package](https://github.com/zloirock/core-js/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.
-
- ```js
- const {
- list, // array of required modules
- targets, // object with targets for each module
- } = require('core-js-compat')({
- targets: '> 2.5%', // browserslist query
- filter: /^(es|web)\./, // optional filter - string-prefix, regexp or list of modules
- });
-
- console.log(targets);
- /* =>
- {
- 'es.symbol.description': { ios: '12.2-12.4' },
- 'es.symbol.match-all': { ios: '12.2-12.4' },
- 'es.array.reverse': { ios: '12.2-12.4' },
- 'es.array.unscopables.flat': { ios: '12.2-12.4' },
- 'es.array.unscopables.flat-map': { ios: '12.2-12.4' },
- 'es.array-buffer.slice': { ios: '12.2-12.4' },
- 'es.global-this': { ios: '12.2-12.4' },
- 'es.json.stringify': { ios: '12.2-12.4' },
- 'es.math.hypot': { chrome: '77' },
- 'es.object.from-entries': { ios: '12.2-12.4' },
- 'es.promise.all-settled': { firefox: '69', ios: '12.2-12.4' },
- 'es.promise.finally': { ios: '12.2-12.4' },
- 'es.string.match-all': { chrome: '77', firefox: '69', ios: '12.2-12.4' },
- 'es.string.replace': { firefox: '69', ios: '12.2-12.4' },
- 'es.string.trim': { ios: '12.2-12.4' },
- 'es.string.trim-end': { ios: '12.2-12.4' },
- 'es.typed-array.float32-array': { ios: '12.2-12.4' },
- 'es.typed-array.float64-array': { ios: '12.2-12.4' },
- 'es.typed-array.int8-array': { ios: '12.2-12.4' },
- 'es.typed-array.int16-array': { ios: '12.2-12.4' },
- 'es.typed-array.int32-array': { ios: '12.2-12.4' },
- 'es.typed-array.uint8-array': { ios: '12.2-12.4' },
- 'es.typed-array.uint8-clamped-array': { ios: '12.2-12.4' },
- 'es.typed-array.uint16-array': { ios: '12.2-12.4' },
- 'es.typed-array.uint32-array': { ios: '12.2-12.4' },
- 'es.typed-array.from': { ios: '12.2-12.4' },
- 'es.typed-array.of': { ios: '12.2-12.4' },
- 'web.dom-collections.iterator': { ios: '12.2-12.4' },
- 'web.immediate': { chrome: '77', firefox: '69', ios: '12.2-12.4' },
- 'web.queue-microtask': { ios: '12.2-12.4' },
- 'web.url': { ios: '12.2-12.4' },
- 'web.url.to-json': { ios: '12.2-12.4' },
- 'web.url-search-params': { ios: '12.2-12.4' }
- }
- */
- ```
-
- 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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