| 1 |
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| 2 | type NullableError = Error | null;
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| 3 |
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| 4 | export function promisify(fn: (...args: any[]) => void): (...args: any[]) => any {
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| 5 | return (...args: any[]) => {
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| 6 | return new Promise((resolve, reject) => {
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| 7 | const nodeCallback = (err: NullableError, result: any) => {
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| 8 | if (err) reject(err);
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| 9 | else resolve(result);
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| 10 | };
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| 11 | fn.apply(null, [...args, nodeCallback]);
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| 12 | });
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| 13 | };
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| 14 | }
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