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Optimize isKey.

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jdalton
2015-04-14 09:25:20 -07:00
parent c4d4af3b5a
commit f96de55ac7
1 changed files with 5 additions and 0 deletions
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5
lodash.src.js
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@@ -89,6 +89,7 @@
/** Used to match property names within property paths. */ /** Used to match property names within property paths. */
var reIsDeepProp = /\.|\[(?:[^[\]]+|(["'])(?:(?!\1)[^\n\\]|\\.)*?)\1\]/, var reIsDeepProp = /\.|\[(?:[^[\]]+|(["'])(?:(?!\1)[^\n\\]|\\.)*?)\1\]/,
reIsPlainProp = /^\w*$/,
rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\n\\]|\\.)*?)\2)\]/g; rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\n\\]|\\.)*?)\2)\]/g;
/** /**
@@ -4330,6 +4331,10 @@
* @returns {boolean} Returns `true` if `value` is a property name, else `false`. * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
*/ */
function isKey(value, object) { function isKey(value, object) {
var type = typeof value;
if ((type == 'string' && reIsPlainProp.test(value)) || type == 'number') {
return true;
}
if (isArray(value)) { if (isArray(value)) {
return false; return false;
} }