You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
30 lines
682 B
JavaScript
30 lines
682 B
JavaScript
5 years ago
|
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;
|