parcel-bundler/lib/utils/promisify.js

Blazing fast, zero configuration web application bundler

"use strict";

module.exports = function (fn) {
  return function (...args) {
    return new Promise(function (resolve, reject) {
      fn(...args, function (err, ...res) {
        if (err) return reject(err);
        if (res.length === 1) return resolve(res[0]);
        resolve(res);
      });
    });
  };
};