var defer = require('./defer.js'); // API module.exports = async; /** * Runs provided callback asynchronously * even if callback itself is not * * @param {function} callback - callback to invoke * @returns {function} - augmented callback */ function async(callback) { var isAsync = false; // check if async happened defer(function() { isAsync = true; }); return function async_callback(err, result) { if (isAsync) { callback(err, result); } else { defer(function nextTick_callback() { callback(err, result); }); } }; }