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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.

```js
const {
  list,                  // array of required modules
  targets,               // object with targets for each module
} = require('core-js-compat')({
  targets: '> 2.5%',     // browserslist query or object of minimum environment versions to support
  filter: /^(es|web)\./, // optional filter - string-prefix, regexp or list of modules
  version: '3.11',       // used `core-js` version, by default - the latest
});

console.log(targets);
/* =>
{
  'es.symbol.match-all': { 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.math.hypot': { chrome: '77' },
  '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.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.url': { ios: '12.2-12.4' },
  'web.url.to-json': { ios: '12.2-12.4' },
  'web.url-search-params': { ios: '12.2-12.4' }
}
*/
```

Additional API:

```js
// equals of of the method from the example above
require('core-js-compat/compat')({ targets, filter, version }); // => { list: Array<ModuleName>, targets: { [ModuleName]: { [EngineName]: EngineVersion } } }
// or
require('core-js-compat').compat({ targets, filter, version }); // => { list: Array<ModuleName>, targets: { [ModuleName]: { [EngineName]: EngineVersion } } }

// full compat data:
require('core-js-compat/data'); // => { [ModuleName]: { [EngineName]: EngineVersion } }
// or
require('core-js-compat').data; // => { [ModuleName]: { [EngineName]: EngineVersion } }

// map of modules by `core-js` entry points:
require('core-js-compat/entries'); // => { [EntryPoint]: Array<ModuleName> }
// or
require('core-js-compat').entries; // => { [EntryPoint]: Array<ModuleName> }

// full list of modules:
require('core-js-compat/modules'); // => Array<ModuleName>
// or
require('core-js-compat').modules; // => Array<ModuleName>

// the subset of modules which available in the passed `core-js` version:
require('core-js-compat/get-modules-list-for-target-version')('3.3'); // => Array<ModuleName>
// or
require('core-js-compat').getModulesListForTargetVersion('3.3'); // => Array<ModuleName>
```

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).