24 lines
699 B
JavaScript
24 lines
699 B
JavaScript
|
'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 })
|
||
|
|
}
|