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node_modules/core-js/modules/es.array.iterator.js

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+'use strict';
+var toIndexedObject = require('../internals/to-indexed-object');
+var addToUnscopables = require('../internals/add-to-unscopables');
+var Iterators = require('../internals/iterators');
+var InternalStateModule = require('../internals/internal-state');
+var defineProperty = require('../internals/object-define-property').f;
+var defineIterator = require('../internals/iterator-define');
+var createIterResultObject = require('../internals/create-iter-result-object');
+var IS_PURE = require('../internals/is-pure');
+var DESCRIPTORS = require('../internals/descriptors');
+
+var ARRAY_ITERATOR = 'Array Iterator';
+var setInternalState = InternalStateModule.set;
+var getInternalState = InternalStateModule.getterFor(ARRAY_ITERATOR);
+
+// `Array.prototype.entries` method
+// https://tc39.es/ecma262/#sec-array.prototype.entries
+// `Array.prototype.keys` method
+// https://tc39.es/ecma262/#sec-array.prototype.keys
+// `Array.prototype.values` method
+// https://tc39.es/ecma262/#sec-array.prototype.values
+// `Array.prototype[@@iterator]` method
+// https://tc39.es/ecma262/#sec-array.prototype-@@iterator
+// `CreateArrayIterator` internal method
+// https://tc39.es/ecma262/#sec-createarrayiterator
+module.exports = defineIterator(Array, 'Array', function (iterated, kind) {
+  setInternalState(this, {
+    type: ARRAY_ITERATOR,
+    target: toIndexedObject(iterated), // target
+    index: 0,                          // next index
+    kind: kind                         // kind
+  });
+// `%ArrayIteratorPrototype%.next` method
+// https://tc39.es/ecma262/#sec-%arrayiteratorprototype%.next
+}, function () {
+  var state = getInternalState(this);
+  var target = state.target;
+  var kind = state.kind;
+  var index = state.index++;
+  if (!target || index >= target.length) {
+    state.target = undefined;
+    return createIterResultObject(undefined, true);
+  }
+  if (kind == 'keys') return createIterResultObject(index, false);
+  if (kind == 'values') return createIterResultObject(target[index], false);
+  return createIterResultObject([index, target[index]], false);
+}, 'values');
+
+// argumentsList[@@iterator] is %ArrayProto_values%
+// https://tc39.es/ecma262/#sec-createunmappedargumentsobject
+// https://tc39.es/ecma262/#sec-createmappedargumentsobject
+var values = Iterators.Arguments = Iterators.Array;
+
+// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+addToUnscopables('keys');
+addToUnscopables('values');
+addToUnscopables('entries');
+
+// V8 ~ Chrome 45- bug
+if (!IS_PURE && DESCRIPTORS && values.name !== 'values') try {
+  defineProperty(values, 'name', { value: 'values' });
+} catch (error) { /* empty */ }