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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
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diff --git a/node_modules/es-abstract/helpers/getIteratorMethod.js b/node_modules/es-abstract/helpers/getIteratorMethod.js
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+'use strict';
+
+var hasSymbols = require('has-symbols')();
+var GetIntrinsic = require('../GetIntrinsic');
+var callBound = require('./callBound');
+
+var $iterator = GetIntrinsic('%Symbol.iterator%', true);
+var $stringSlice = callBound('String.prototype.slice');
+
+module.exports = function getIteratorMethod(ES, iterable) {
+ var usingIterator;
+ if (hasSymbols) {
+ usingIterator = ES.GetMethod(iterable, $iterator);
+ } else if (ES.IsArray(iterable)) {
+ usingIterator = function () {
+ var i = -1;
+ var arr = this; // eslint-disable-line no-invalid-this
+ return {
+ next: function () {
+ i += 1;
+ return {
+ done: i >= arr.length,
+ value: arr[i]
+ };
+ }
+ };
+ };
+ } else if (ES.Type(iterable) === 'String') {
+ usingIterator = function () {
+ var i = 0;
+ return {
+ next: function () {
+ var nextIndex = ES.AdvanceStringIndex(iterable, i, true);
+ var value = $stringSlice(iterable, i, nextIndex);
+ i = nextIndex;
+ return {
+ done: nextIndex > iterable.length,
+ value: value
+ };
+ }
+ };
+ };
+ }
+ return usingIterator;
+};