* For feature detection * @param {Function} fn The function to test for native support
( fn )
| 3839 | * @param {Function} fn The function to test for native support |
| 3840 | */ |
| 3841 | function isNative( fn ) { |
| 3842 | return rnative.test( fn + "" ); |
| 3843 | } |
| 3844 | |
| 3845 | /** |
| 3846 | * Create key-value caches of limited size |