promisify-node.js

var promisify = require("promisify-node");
 
function makeItAsync(callback) {
  callback(null, true);
}
 
// Convert the function to return a Promise. 
var wrap = promisify(makeItAsync);
 
// Invoke the newly wrapped function. 
wrap().then(function(value) {
  console.log(value === true);
});