git.r.bdr.sh - rbdr/dotfiles/blob

   1 'use strict';
   2
   3 var isWeakMap = require('./is-weak-map');
   4
   5 module.exports = function (x) {
   6         if (!isWeakMap(x)) throw new TypeError(x + " is not a WeakMap");
   7         return x;
   8 };