20 lines
511 B
JavaScript
Executable File
20 lines
511 B
JavaScript
Executable File
module.exports = promisify
|
|
|
|
function promisify (fn, args) {
|
|
if (typeof Promise === 'undefined') {
|
|
throw new Error('Please run in a Promise supported environment or provide a callback')
|
|
}
|
|
return new Promise(function (resolve, reject) {
|
|
args = [].slice.call(args).concat([callback])
|
|
fn.apply(null, args)
|
|
|
|
function callback (error, port) {
|
|
if (error || port === false) {
|
|
reject(error || new Error('No open port found'))
|
|
} else {
|
|
resolve(port)
|
|
}
|
|
}
|
|
})
|
|
}
|