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1 files changed, 59 insertions, 0 deletions

diff --git a/node_modules/core-js/modules/library/_collection.js b/node_modules/core-js/modules/library/_collection.js
new file mode 100644
index 00000000..31a36b87
--- /dev/null
+++ b/node_modules/core-js/modules/library/_collection.js
@@ -0,0 +1,59 @@
+'use strict';
+var global = require('./_global');
+var $export = require('./_export');
+var meta = require('./_meta');
+var fails = require('./_fails');
+var hide = require('./_hide');
+var redefineAll = require('./_redefine-all');
+var forOf = require('./_for-of');
+var anInstance = require('./_an-instance');
+var isObject = require('./_is-object');
+var setToStringTag = require('./_set-to-string-tag');
+var dP = require('./_object-dp').f;
+var each = require('./_array-methods')(0);
+var DESCRIPTORS = require('./_descriptors');
+
+module.exports = function (NAME, wrapper, methods, common, IS_MAP, IS_WEAK) {
+  var Base = global[NAME];
+  var C = Base;
+  var ADDER = IS_MAP ? 'set' : 'add';
+  var proto = C && C.prototype;
+  var O = {};
+  if (!DESCRIPTORS || typeof C != 'function' || !(IS_WEAK || proto.forEach && !fails(function () {
+    new C().entries().next();
+  }))) {
+    // create collection constructor
+    C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER);
+    redefineAll(C.prototype, methods);
+    meta.NEED = true;
+  } else {
+    C = wrapper(function (target, iterable) {
+      anInstance(target, C, NAME, '_c');
+      target._c = new Base();
+      if (iterable != undefined) forOf(iterable, IS_MAP, target[ADDER], target);
+    });
+    each('add,clear,delete,forEach,get,has,set,keys,values,entries,toJSON'.split(','), function (KEY) {
+      var IS_ADDER = KEY == 'add' || KEY == 'set';
+      if (KEY in proto && !(IS_WEAK && KEY == 'clear')) hide(C.prototype, KEY, function (a, b) {
+        anInstance(this, C, KEY);
+        if (!IS_ADDER && IS_WEAK && !isObject(a)) return KEY == 'get' ? undefined : false;
+        var result = this._c[KEY](a === 0 ? 0 : a, b);
+        return IS_ADDER ? this : result;
+      });
+    });
+    IS_WEAK || dP(C.prototype, 'size', {
+      get: function () {
+        return this._c.size;
+      }
+    });
+  }
+
+  setToStringTag(C, NAME);
+
+  O[NAME] = C;
+  $export($export.G + $export.W + $export.F, O);
+
+  if (!IS_WEAK) common.setStrong(C, NAME, IS_MAP);
+
+  return C;
+};