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core-js-compat package contains data about the necessity of core-js modules and API for getting a list of required core-js modules by browserslist query.

import compat from 'core-js-compat';

const {
  list,                         // array of required modules
  targets,                      // object with targets for each module
} = compat({
  targets: '> 1%',              // browserslist query or object of minimum environment versions to support, see below
  modules: [                    // optional list / filter of modules - regex, sting or an array of them:
    'core-js/actual',           // - an entry point
    'esnext.array.unique-by',   // - a module name (or just a start of a module name)
    /^web\./,                   // - regex that a module name must satisfy
  ],
  exclude: [                    // optional list / filter of modules to exclude, the signature is similar to `modules` option
    'web.atob',
  ],
  version: '3.22',              // used `core-js` version, by default - the latest
});

console.log(targets);
/* =>
{
  'es.error.cause': { ios: '14.5-14.8', samsung: '16.0' },
  'es.aggregate-error.cause': { ios: '14.5-14.8', samsung: '16.0' },
  'es.array.at': { ios: '14.5-14.8' },
  'es.object.has-own': { ios: '14.5-14.8', samsung: '16.0' },
  'es.string.at-alternative': { ios: '14.5-14.8' },
  'es.typed-array.at': { ios: '14.5-14.8' },
  'es.typed-array.set': { samsung: '16.0' },
  'esnext.array.find-last': { firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.find-last-index': { firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.group-by': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.group-by-to-map': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.to-reversed': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.to-sorted': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.to-spliced': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.unique-by': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.array.with': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.typed-array.find-last': { firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.typed-array.find-last-index': { firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.typed-array.to-reversed': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.typed-array.to-sorted': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.typed-array.to-spliced': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'esnext.typed-array.with': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'web.dom-exception.stack': { chrome: '98', edge: '99', ios: '14.5-14.8', samsung: '16.0' },
  'web.immediate': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' },
  'web.structured-clone': { chrome: '98', edge: '99', firefox: '98', ios: '14.5-14.8', samsung: '16.0' }
}
*/

`targets` option

targets could be a browserslist query or a targets object that specifies minimum environment versions to support:
js // browserslist query: 'defaults, not IE 11, maintained node versions' // object: { android: '4.0', // Android WebView version chrome: '38', // Chrome version deno: '1.12', // Deno version edge: '13', // Edge version electron: '5.0', // Electron framework version firefox: '15', // Firefox version ie: '8', // Internet Explorer version ios: '13.0', // iOS Safari version node: 'current', // NodeJS version, you could use 'current' for set it to currently used opera: '12', // Opera version opera_mobile: '7', // Opera Mobile version phantom: '1.9', // PhantomJS headless browser version rhino: '1.7.13', // Rhino engine version safari: '14.0', // Safari version samsung: '14.0', // Samsung Internet version esmodules: true, // That option set target to minimum supporting ES Modules versions of all browsers browsers: '> 0.25%', // Browserslist query or object with target browsers }

Additional API:

// equals of of the method from the example above
require('core-js-compat/compat')({ targets, modules, version }); // => { list: Array<ModuleName>, targets: { [ModuleName]: { [EngineName]: EngineVersion } } }
// or
require('core-js-compat').compat({ targets, modules, 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')('3.22'); // => Array<ModuleName>
// or
require('core-js-compat').getModulesListForTargetVersion('3.22'); // => Array<ModuleName>

If you want to add new / update data about modules required for target engines, follow this instruction.

targets option

Additional API:

`targets` option