node_modules/npm/node_modules/node-gyp/node_modules/path-array/node_modules/array-index/node_modules/es6-symbol/node_modules/es5-ext/function/valid-function.js

'use strict';

var isFunction = require('./is-function');

module.exports = function (x) {
	if (!isFunction(x)) throw new TypeError(x + " is not a function");
	return x;
};