| 1 | 'use strict'
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| 2 |
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| 3 | exports.fromCallback = function (fn) {
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| 4 | return Object.defineProperty(function (...args) {
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| 5 | if (typeof args[args.length - 1] === 'function') fn.apply(this, args)
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| 6 | else {
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| 7 | return new Promise((resolve, reject) => {
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| 8 | args.push((err, res) => (err != null) ? reject(err) : resolve(res))
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| 9 | fn.apply(this, args)
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| 10 | })
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| 11 | }
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| 12 | }, 'name', { value: fn.name })
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| 13 | }
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| 14 |
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| 15 | exports.fromPromise = function (fn) {
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| 16 | return Object.defineProperty(function (...args) {
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| 17 | const cb = args[args.length - 1]
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| 18 | if (typeof cb !== 'function') return fn.apply(this, args)
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| 19 | else {
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| 20 | args.pop()
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| 21 | fn.apply(this, args).then(r => cb(null, r), cb)
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| 22 | }
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| 23 | }, 'name', { value: fn.name })
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| 24 | }
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