Move Iterator sequencing proposal to stage 3

README.md

@@ -160,6 +160,7 @@ structuredClone(new Set([1, 2, 3])); // => new Set([1, 2, 3])
       - [New `Set` methods](#new-set-methods)
     - [Stage 3 proposals](#stage-3-proposals)
       - [`Array.fromAsync`](#arrayfromasync)
+      - [`Iterator` sequencing](#iterator-sequencing)
       - [`JSON.parse` source text access](#jsonparse-source-text-access)
       - [`Float16` methods](#float16-methods)
       - [`Uint8Array` to / from base64 and hex](#uint8array-to--from-base64-and-hex)
@@ -168,7 +169,6 @@ structuredClone(new Set([1, 2, 3])); // => new Set([1, 2, 3])
       - [`Math.sumPrecise`](#mathsumprecise)
       - [`Symbol.metadata` for decorators metadata proposal](#symbolmetadata-for-decorators-metadata-proposal)
     - [Stage 2.7 proposals](#stage-27-proposals)
-      - [`Iterator` sequencing](#iterator-sequencing)
     - [Stage 2 proposals](#stage-2-proposals)
       - [`AsyncIterator` helpers](#asynciterator-helpers)
       - [`Iterator.range`](#iteratorrange)
@@ -2421,6 +2421,26 @@ core-js(-pure)/actual|full/array/from-async
 await Array.fromAsync((async function * () { yield * [1, 2, 3]; })(), i => i * i); // => [1, 4, 9]
 ```
 
+##### [`Iterator` sequencing](https://github.com/tc39/proposal-iterator-sequencing)[⬆](#index)
+Module [`esnext.iterator.concat`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.iterator.concat.js)
+```ts
+class Iterator {
+  concat(...items: Array<IterableObject>): Iterator<any>;
+}
+```
+[*CommonJS entry points:*](#commonjs-api)
+```
+core-js/proposals/iterator-sequencing
+core-js(-pure)/actual|full/iterator/concat
+```
+[*Example*](https://tinyurl.com/2522xjae):
+```js
+Iterator.concat([0, 1].values(), [2, 3], function * () {
+  yield 4;
+  yield 5;
+}()).toArray(); // => [0, 1, 2, 3, 4, 5]
+```
+
 ##### [`JSON.parse` source text access](https://github.com/tc39/proposal-json-parse-with-source)[⬆](#index)
 Modules [`esnext.json.is-raw-json`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.json.is-raw-json.js), [`esnext.json.parse`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.json.parse.js), [`esnext.json.raw-json`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.json.raw-json.js).
 ```ts
@@ -2648,25 +2668,7 @@ core-js(-pure)/actual|full/function/metadata
 core-js(-pure)/stage/2.7
 ```
 
-##### [`Iterator` sequencing](https://github.com/tc39/proposal-iterator-sequencing)[⬆](#index)
-Module [`esnext.iterator.concat`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.iterator.concat.js)
-```ts
-class Iterator {
-  concat(...items: Array<IterableObject>): Iterator<any>;
-}
-```
-[*CommonJS entry points:*](#commonjs-api)
-```
-core-js/proposals/iterator-sequencing
-core-js(-pure)/full/iterator/concat
-```
-[*Example*](https://tinyurl.com/2522xjae):
-```js
-Iterator.concat([0, 1].values(), [2, 3], function * () {
-  yield 4;
-  yield 5;
-}()).toArray(); // => [0, 1, 2, 3, 4, 5]
-```
+*empty*
 
 #### Stage 2 proposals[⬆](#index)
 [*CommonJS entry points:*](#commonjs-api)

packages/core-js/actual/iterator/concat.js

@@ -0,0 +1,20 @@
+'use strict';
+require('../../modules/es.array.iterator');
+require('../../modules/es.object.to-string');
+require('../../modules/es.string.iterator');
+require('../../modules/es.iterator.constructor');
+require('../../modules/es.iterator.drop');
+require('../../modules/es.iterator.every');
+require('../../modules/es.iterator.filter');
+require('../../modules/es.iterator.find');
+require('../../modules/es.iterator.flat-map');
+require('../../modules/es.iterator.for-each');
+require('../../modules/es.iterator.map');
+require('../../modules/es.iterator.reduce');
+require('../../modules/es.iterator.some');
+require('../../modules/es.iterator.take');
+require('../../modules/es.iterator.to-array');
+require('../../modules/esnext.iterator.concat');
+var path = require('../../internals/path');
+
+module.exports = path.Iterator.concat;

packages/core-js/actual/iterator/index.js

@@ -2,6 +2,7 @@
 var parent = require('../../stable/iterator');
 require('../../modules/es.promise');
 require('../../modules/esnext.iterator.constructor');
+require('../../modules/esnext.iterator.concat');
 require('../../modules/esnext.iterator.dispose');
 require('../../modules/esnext.iterator.drop');
 require('../../modules/esnext.iterator.every');

packages/core-js/full/iterator/concat.js

@@ -1,20 +1,4 @@
 'use strict';
-require('../../modules/es.array.iterator');
-require('../../modules/es.object.to-string');
-require('../../modules/es.string.iterator');
-require('../../modules/es.iterator.constructor');
-require('../../modules/es.iterator.drop');
-require('../../modules/es.iterator.every');
-require('../../modules/es.iterator.filter');
-require('../../modules/es.iterator.find');
-require('../../modules/es.iterator.flat-map');
-require('../../modules/es.iterator.for-each');
-require('../../modules/es.iterator.map');
-require('../../modules/es.iterator.reduce');
-require('../../modules/es.iterator.some');
-require('../../modules/es.iterator.take');
-require('../../modules/es.iterator.to-array');
-require('../../modules/esnext.iterator.concat');
-var path = require('../../internals/path');
+var parent = require('../../actual/iterator/concat');
 
-module.exports = path.Iterator.concat;
+module.exports = parent;

packages/core-js/full/iterator/index.js

@@ -1,6 +1,5 @@
 'use strict';
 var parent = require('../../actual/iterator');
-require('../../modules/esnext.iterator.concat');
 require('../../modules/esnext.iterator.range');
 // TODO: Remove from `core-js@4`
 require('../../modules/esnext.iterator.as-indexed-pairs');

packages/core-js/modules/esnext.iterator.concat.js

@@ -35,7 +35,7 @@ var IteratorProxy = createIteratorProxy(function () {
 
 // `Iterator.concat` method
 // https://github.com/tc39/proposal-iterator-sequencing
-$({ target: 'Iterator', stat: true, forced: true }, {
+$({ target: 'Iterator', stat: true }, {
   concat: function concat() {
     var length = arguments.length;
     var iterables = $Array(length);

packages/core-js/stage/2.7.js

@@ -1,6 +1,6 @@
 'use strict';
 var parent = require('./3');
 
-require('../proposals/iterator-sequencing');
+// empty
 
 module.exports = parent;

packages/core-js/stage/3.js

@@ -6,6 +6,7 @@ require('../proposals/array-from-async-stage-2');
 require('../proposals/decorator-metadata-v2');
 require('../proposals/explicit-resource-management');
 require('../proposals/float16');
+require('../proposals/iterator-sequencing');
 require('../proposals/json-parse-with-source');
 require('../proposals/math-sum');
 require('../proposals/regexp-escaping');

tests/entries/unit.mjs

@@ -695,6 +695,7 @@ for (PATH of ['core-js-pure', 'core-js']) {
     ok(typeof load(NS, 'async-iterator/some') == 'function');
     ok(typeof load(NS, 'async-iterator/take') == 'function');
     ok(typeof load(NS, 'async-iterator/to-array') == 'function');
+    ok(load(NS, 'iterator/concat')([2]).next().value === 2);
     load(NS, 'data-view/get-float16');
     load(NS, 'data-view/set-float16');
     ok(load(NS, 'function/metadata') === null);
@@ -771,7 +772,6 @@ for (PATH of ['core-js-pure', 'core-js']) {
     ok(load(NS, 'function/virtual/un-this').call([].slice)([1, 2, 3], 1)[0] === 2);
     ok(typeof load(NS, 'iterator/as-indexed-pairs') == 'function');
     ok(typeof load(NS, 'iterator/indexed') == 'function');
-    ok(load(NS, 'iterator/concat')([2]).next().value === 2);
     ok(load(NS, 'iterator/range')(1, 2).next().value === 1);
     ok(load(NS, 'map/delete-all')(new Map(), 1, 2) === false);
     ok(load(NS, 'map/emplace')(new Map([[1, 2]]), 1, { update: it => it ** 2 }) === 4);

tests/unit-pure/esnext.iterator.concat.js

@@ -1,7 +1,7 @@
 import { createIterable, createIterator } from '../helpers/helpers.js';
 
-import concat from 'core-js-pure/full/iterator/concat';
-import Iterator from 'core-js-pure/full/iterator';
+import concat from 'core-js-pure/actual/iterator/concat';
+import Iterator from 'core-js-pure/actual/iterator';
 import from from 'core-js-pure/es/array/from';
 
 QUnit.test('Iterator.concat', assert => {