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etale/promisify.js

Last active February 19, 2016 00:56
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Oneliner Promisify
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promisify.js
var promisify = (a) => (...b) => new Promise((c, d) => a(...b, (e, f) => e ? d(e) : c(f)))
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etale commented Feb 17, 2016 

// Rest parameters + Spread operator
var promisify = (a) => (...b) =>
  new Promise((c, d) =>
    a(...b, (e, f) => e ? d(e) : c(f)))

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etale commented Feb 18, 2016 

// Spread operator only
var promisify = (a) => function () {
  return new Promise((c, d) =>
    a(...arguments, (e, f) => e ? d(e) : c(f)))
}

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