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- 'use strict'
-
- exports.fromCallback = function (fn) {
- return Object.defineProperty(function (...args) {
- if (typeof args[args.length - 1] === 'function') fn.apply(this, args)
- else {
- return new Promise((resolve, reject) => {
- fn.apply(
- this,
- args.concat([(err, res) => err ? reject(err) : resolve(res)])
- )
- })
- }
- }, 'name', { value: fn.name })
- }
-
- exports.fromPromise = function (fn) {
- return Object.defineProperty(function (...args) {
- const cb = args[args.length - 1]
- if (typeof cb !== 'function') return fn.apply(this, args)
- else fn.apply(this, args.slice(0, -1)).then(r => cb(null, r), cb)
- }, 'name', { value: fn.name })
- }
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