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February 26, 2020 13:36
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promisify
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| const promisify = (fn) => ( | |
| (...args) => ( | |
| new Promise((resolve, reject) => { | |
| fn(...args, (err, ...res) => { | |
| if (err) reject(err) | |
| else resolve(...res) | |
| }) | |
| }) | |
| ) | |
| ) |
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