1 files changed, 69 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/_iter-define.js b/node_modules/core-js/modules/_iter-define.js
new file mode 100644
index 00000000..578dfb73
--- /dev/null
+++ b/node_modules/core-js/modules/_iter-define.js
@@ -0,0 +1,69 @@
+'use strict';
+var LIBRARY = require('./_library');
+var $export = require('./_export');
+var redefine = require('./_redefine');
+var hide = require('./_hide');
+var Iterators = require('./_iterators');
+var $iterCreate = require('./_iter-create');
+var setToStringTag = require('./_set-to-string-tag');
+var getPrototypeOf = require('./_object-gpo');
+var ITERATOR = require('./_wks')('iterator');
+var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`
+var FF_ITERATOR = '@@iterator';
+var KEYS = 'keys';
+var VALUES = 'values';
+
+var returnThis = function () { return this; };
+
+module.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {
+  $iterCreate(Constructor, NAME, next);
+  var getMethod = function (kind) {
+    if (!BUGGY && kind in proto) return proto[kind];
+    switch (kind) {
+      case KEYS: return function keys() { return new Constructor(this, kind); };
+      case VALUES: return function values() { return new Constructor(this, kind); };
+    } return function entries() { return new Constructor(this, kind); };
+  };
+  var TAG = NAME + ' Iterator';
+  var DEF_VALUES = DEFAULT == VALUES;
+  var VALUES_BUG = false;
+  var proto = Base.prototype;
+  var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];
+  var $default = $native || getMethod(DEFAULT);
+  var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;
+  var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;
+  var methods, key, IteratorPrototype;
+  // Fix native
+  if ($anyNative) {
+    IteratorPrototype = getPrototypeOf($anyNative.call(new Base()));
+    if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {
+      // Set @@toStringTag to native iterators
+      setToStringTag(IteratorPrototype, TAG, true);
+      // fix for some old engines
+      if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') hide(IteratorPrototype, ITERATOR, returnThis);
+    }
+  }
+  // fix Array#{values, @@iterator}.name in V8 / FF
+  if (DEF_VALUES && $native && $native.name !== VALUES) {
+    VALUES_BUG = true;
+    $default = function values() { return $native.call(this); };
+  }
+  // Define iterator
+  if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) {
+    hide(proto, ITERATOR, $default);
+  }
+  // Plug for library
+  Iterators[NAME] = $default;
+  Iterators[TAG] = returnThis;
+  if (DEFAULT) {
+    methods = {
+      values: DEF_VALUES ? $default : getMethod(VALUES),
+      keys: IS_SET ? $default : getMethod(KEYS),
+      entries: $entries
+    };
+    if (FORCED) for (key in methods) {
+      if (!(key in proto)) redefine(proto, key, methods[key]);
+    } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods);
+  }
+  return methods;
+};