| 1 | module.exports = function(fn) {
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| 2 | return function(...args) {
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| 3 | return new Promise(function(resolve, reject) {
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| 4 | fn(...args, function(err, ...res) {
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| 5 | if (err) return reject(err);
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| 6 |
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| 7 | if (res.length === 1) return resolve(res[0]);
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| 8 |
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| 9 | resolve(res);
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| 10 | });
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| 11 | });
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| 12 | };
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| 13 | };
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