mirror of
https://github.com/taixingyiji/openit.git
synced 2025-11-04 00:12:23 +00:00
30 lines
682 B
JavaScript
30 lines
682 B
JavaScript
var baseGetTag = require('./_baseGetTag'),
|
|
isObjectLike = require('./isObjectLike');
|
|
|
|
/** `Object#toString` result references. */
|
|
var symbolTag = '[object Symbol]';
|
|
|
|
/**
|
|
* Checks if `value` is classified as a `Symbol` primitive or object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 4.0.0
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
|
|
* @example
|
|
*
|
|
* _.isSymbol(Symbol.iterator);
|
|
* // => true
|
|
*
|
|
* _.isSymbol('abc');
|
|
* // => false
|
|
*/
|
|
function isSymbol(value) {
|
|
return typeof value == 'symbol' ||
|
|
(isObjectLike(value) && baseGetTag(value) == symbolTag);
|
|
}
|
|
|
|
module.exports = isSymbol;
|