| 1 | //
|
| 2 | ;
|
| 3 |
|
| 4 | function cacheWrapper (cache , key , fn ) {
|
| 5 | if (!cache) {
|
| 6 | return fn();
|
| 7 | }
|
| 8 |
|
| 9 | const cached = cache.get(key);
|
| 10 | if (cached !== undefined) {
|
| 11 | return cached;
|
| 12 | }
|
| 13 |
|
| 14 | const result = fn();
|
| 15 | cache.set(key, result);
|
| 16 | return result;
|
| 17 | }
|
| 18 |
|
| 19 | module.exports = cacheWrapper;
|