[rbdr/dotfiles] / atom / packages / vim-mode / node_modules / grim / node_modules / emissary / node_modules / es6-weak-map / valid-weak-map.js

'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;
};