Spaces:
Runtime error
Runtime error
var baseGetTag = require('./_baseGetTag'), | |
isObject = require('./isObject'); | |
/** `Object#toString` result references. */ | |
var asyncTag = '[object AsyncFunction]', | |
funcTag = '[object Function]', | |
genTag = '[object GeneratorFunction]', | |
proxyTag = '[object Proxy]'; | |
/** | |
* Checks if `value` is classified as a `Function` object. | |
* | |
* @static | |
* @memberOf _ | |
* @since 0.1.0 | |
* @category Lang | |
* @param {*} value The value to check. | |
* @returns {boolean} Returns `true` if `value` is a function, else `false`. | |
* @example | |
* | |
* _.isFunction(_); | |
* // => true | |
* | |
* _.isFunction(/abc/); | |
* // => false | |
*/ | |
function isFunction(value) { | |
if (!isObject(value)) { | |
return false; | |
} | |
// The use of `Object#toString` avoids issues with the `typeof` operator | |
// in Safari 9 which returns 'object' for typed arrays and other constructors. | |
var tag = baseGetTag(value); | |
return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag; | |
} | |
module.exports = isFunction; | |