filter out stabilized proposals from the output

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## Changelog
 ##### Unreleased
+- Stabilized proposals are filtered out from the `core-js-compat` / `core-js-builder` / `core-js-bundle` output. That mean that if the output contains, for example, `es.object.has-own`, the legacy shortcut to it, `esnext.object.has-own`, will not be added.
 - Fixed work of non-standard V8 `Error` features with wrapped `Error` constructors, [#1061](https:/zloirock/core-js/issues/1061)
 - `null` and `undefined` allowed as the second argument of `structuredClone`, [#1056](https:/zloirock/core-js/issues/1056)
 - Updated Electron 18.0 compat data mapping

packages/core-js-builder/index.js

@@ -12,6 +12,7 @@ const mkdirp = promisify(require('mkdirp'));
 const webpack = promisify(require('webpack'));
 const compat = require('core-js-compat/compat');
 const modulesList = require('core-js-compat/modules');
+const { filterOutStabilizedProposals } = require('core-js-compat/helpers');
 const { banner } = require('./config');
 
 function normalizeSummary(unit = {}) {
@@ -55,7 +56,7 @@ module.exports = async function ({
  filter('delete', blacklist || exclude);
 
  // eslint-disable-next-line sonarjs/no-empty-collection -- false positive
- modules = modulesList.filter(it => set.has(it));
+ modules = filterOutStabilizedProposals(modulesList.filter(it => set.has(it)));
 
  if (targets) {
  const compatResult = compat({ targets, filter: modules });

packages/core-js-compat/compat.js

@@ -1,5 +1,5 @@
 'use strict';
-const { compare, has, intersection } = require('./helpers');
+const { compare, filterOutStabilizedProposals, has, intersection } = require('./helpers');
 const data = require('./data');
 const getModulesListForTargetVersion = require('./get-modules-list-for-target-version');
 const modules = require('./modules');
@@ -40,6 +40,8 @@ module.exports = function ({ targets, filter, version }) {
  $modules = $modules.filter(it => it.startsWith(filter));
  }
 
+ $modules = filterOutStabilizedProposals($modules);
+
  if (version) {
  $modules = intersection($modules, getModulesListForTargetVersion(version));
  }

packages/core-js-compat/helpers.js

@@ -8,6 +8,18 @@ function compare(a, operator, b) {
  return cmp(semver(a), operator, semver(b));
 }
 
+function filterOutStabilizedProposals(modules) {
+ const modulesSet = new Set(modules);
+
+ for (const $module of modulesSet) {
+ if ($module.startsWith('esnext.') && modulesSet.has($module.replace(/^esnext\./, 'es.'))) {
+ modulesSet.delete($module);
+ }
+ }
+
+ return [...modulesSet];
+}
+
 function intersection(list, order) {
  const set = list instanceof Set ? list : new Set(list);
  return order.filter(name => set.has(name));
@@ -22,6 +34,7 @@ function sortObjectByKey(object, fn) {
 
 module.exports = {
  compare,
+ filterOutStabilizedProposals,
  has,
  intersection,
  semver,

scripts/bundle.mjs

@@ -51,8 +51,6 @@ bundle(DENO ? {
  targets: { deno: '1.0' },
  exclude: [
  'esnext.array.filter-out', // obsolete
- 'esnext.aggregate-error', // moved to stable ES
- 'esnext.global-this', // moved to stable ES
  'esnext.map.update-or-insert', // obsolete
  'esnext.map.upsert', // obsolete
  'esnext.math.iaddh', // withdrawn
@@ -63,11 +61,7 @@ bundle(DENO ? {
  'esnext.object.iterate-entries', // withdrawn
  'esnext.object.iterate-keys', // withdrawn
  'esnext.object.iterate-values', // withdrawn
- 'esnext.promise.all-settled', // moved to stable ES
- 'esnext.promise.any', // moved to stable ES
  'esnext.string.at', // withdrawn
- 'esnext.string.match-all', // moved to stable ES
- 'esnext.string.replace-all', // moved to stable ES
  'esnext.symbol.pattern-match', // is not a part of actual proposal, replaced by esnext.symbol.matcher
  'esnext.symbol.replace-all', // obsolete
  'esnext.typed-array.filter-out', // obsolete