jsdoc-75lb/node_modules-3.4.0/es6-weak-map/valid-weak-map.js

An API documentation generator for JavaScript.

'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;
};