| 1 | module.exports = promisify
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| 2 |
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| 3 | function promisify (fn, args) {
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| 4 | if (typeof Promise === 'undefined') {
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| 5 | throw new Error('Please run in a Promise supported environment or provide a callback')
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| 6 | }
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| 7 | return new Promise(function (resolve, reject) {
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| 8 | args = [].slice.call(args).concat([callback])
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| 9 | fn.apply(null, args)
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| 10 |
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| 11 | function callback (error, port) {
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| 12 | if (error || port === false) {
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| 13 | reject(error || new Error('No open port found'))
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| 14 | } else {
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| 15 | resolve(port)
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| 16 | }
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| 17 | }
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| 18 | })
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| 19 | }
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