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node_modules/core-js/internals/object-iterator.js

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+'use strict';
+var InternalStateModule = require('../internals/internal-state');
+var createIteratorConstructor = require('../internals/iterator-create-constructor');
+var createIterResultObject = require('../internals/create-iter-result-object');
+var hasOwn = require('../internals/has-own-property');
+var objectKeys = require('../internals/object-keys');
+var toObject = require('../internals/to-object');
+
+var OBJECT_ITERATOR = 'Object Iterator';
+var setInternalState = InternalStateModule.set;
+var getInternalState = InternalStateModule.getterFor(OBJECT_ITERATOR);
+
+module.exports = createIteratorConstructor(function ObjectIterator(source, mode) {
+  var object = toObject(source);
+  setInternalState(this, {
+    type: OBJECT_ITERATOR,
+    mode: mode,
+    object: object,
+    keys: objectKeys(object),
+    index: 0
+  });
+}, 'Object', function next() {
+  var state = getInternalState(this);
+  var keys = state.keys;
+  while (true) {
+    if (keys === null || state.index >= keys.length) {
+      state.object = state.keys = null;
+      return createIterResultObject(undefined, true);
+    }
+    var key = keys[state.index++];
+    var object = state.object;
+    if (!hasOwn(object, key)) continue;
+    switch (state.mode) {
+      case 'keys': return createIterResultObject(key, false);
+      case 'values': return createIterResultObject(object[key], false);
+    } /* entries */ return createIterResultObject([key, object[key]], false);
+  }
+});