1 var baseGetTag = require('./_baseGetTag'),
2 isObject = require('./isObject');
4 /** `Object#toString` result references. */
5 var asyncTag = '[object AsyncFunction]',
6 funcTag = '[object Function]',
7 genTag = '[object GeneratorFunction]',
8 proxyTag = '[object Proxy]';
11 * Checks if `value` is classified as a `Function` object.
17 * @param {*} value The value to check.
18 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
24 * _.isFunction(/abc/);
27 function isFunction(value) {
28 if (!isObject(value)) {
31 // The use of `Object#toString` avoids issues with the `typeof` operator
32 // in Safari 9 which returns 'object' for typed arrays and other constructors.
33 var tag = baseGetTag(value);
34 return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
37 module.exports = isFunction;