var baseIsFunction = require('../internal/baseIsFunction'), isNative = require('./isNative'); /** `Object#toString` result references. */ var funcTag = '[object Function]'; /** Used for native method references. */ var objectProto = Object.prototype; /** * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring) * of values. */ var objToString = objectProto.toString; /** Native method references. */ var Uint8Array = isNative(Uint8Array = global.Uint8Array) && Uint8Array; /** * Checks if `value` is classified as a `Function` object. * * @static * @memberOf _ * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. * @example * * _.isFunction(_); * // => true * * _.isFunction(/abc/); * // => false */ var isFunction = !(baseIsFunction(/x/) || (Uint8Array && !baseIsFunction(Uint8Array))) ? baseIsFunction : function(value) { // The use of `Object#toString` avoids issues with the `typeof` operator // in older versions of Chrome and Safari which return 'function' for regexes // and Safari 8 equivalents which return 'object' for typed array constructors. return objToString.call(value) == funcTag; }; module.exports = isFunction;