forked from fdzcxy212206413/gsl_grs
You can not 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
880 B
30 lines
880 B
1 month ago
|
var isArray = require('./isArray'),
|
||
|
|
isSymbol = require('./isSymbol');
|
||
|
|
|
||
|
|
/** Used to match property names within property paths. */
|
||
|
|
var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
|
||
|
|
reIsPlainProp = /^\w*$/;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if `value` is a property name and not a property path.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {*} value The value to check.
|
||
|
|
* @param {Object} [object] The object to query keys on.
|
||
|
|
* @returns {boolean} Returns `true` if `value` is a property name, else `false`.
|
||
|
|
*/
|
||
|
|
function isKey(value, object) {
|
||
|
|
if (isArray(value)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
var type = typeof value;
|
||
|
|
if (type == 'number' || type == 'symbol' || type == 'boolean' ||
|
||
|
|
value == null || isSymbol(value)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
|
||
|
|
(object != null && value in Object(object));
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = isKey;
|