BJ_web_developers / cityOperationCenter

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node_modules/es6-weak-map/valid-weak-map.js 170 Bytes
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2a09d1a4   liuqimichale   添加宜春 天水 宣化 
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  'use strict';
  
  var isWeakMap = require('./is-weak-map');
  
  module.exports = function (x) {
  	if (!isWeakMap(x)) throw new TypeError(x + " is not a WeakMap");
  	return x;
  };