初始化

康凯

2022-05-20 aa4c235a8ca67ea8b731f90c951a465e92c0a865

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'use strict';
var $ = require('../internals/export');
var IS_PURE = require('../internals/is-pure');
var $upsert = require('../internals/map-upsert');
 
// `WeakMap.prototype.upsert` method
// https://github.com/thumbsupep/proposal-upsert
$({ target: 'WeakMap', proto: true, real: true, forced: IS_PURE }, {
  upsert: $upsert
});