()
| 12 | } |
| 13 | |
| 14 | function defer() { |
| 15 | const deferred = {}; |
| 16 | deferred.promise = new Promise((resolve, reject) => { |
| 17 | deferred.resolve = resolve; |
| 18 | deferred.reject = reject; |
| 19 | }); |
| 20 | return deferred; |
| 21 | } |
| 22 | |
| 23 | function memoize(fn) { |
| 24 | const cache = {}; |