name : readable_asynckit.js var streamify = require('./streamify.js') , defer = require('./defer.js') ; // API module.exports = ReadableAsyncKit; /** * Base constructor for all streams * used to hold properties/methods */ function ReadableAsyncKit() { ReadableAsyncKit.super_.apply(this, arguments); // list of active jobs this.jobs = {}; // add stream methods this.destroy = destroy; this._start = _start; this._read = _read; } /** * Destroys readable stream, * by aborting outstanding jobs * * @returns {void} */ function destroy() { if (this.destroyed) { return; } this.destroyed = true; if (typeof this.terminator == 'function') { this.terminator(); } } /** * Starts provided jobs in async manner * * @private */ function _start() { // first argument – runner function var runner = arguments[0] // take away first argument , args = Array.prototype.slice.call(arguments, 1) // second argument - input data , input = args[0] // last argument - result callback , endCb = streamify.callback.call(this, args[args.length - 1]) ; args[args.length - 1] = endCb; // third argument - iterator args[1] = streamify.iterator.call(this, args[1]); // allow time for proper setup defer(function() { if (!this.destroyed) { this.terminator = runner.apply(null, args); } else { endCb(null, Array.isArray(input) ? [] : {}); } }.bind(this)); } /** * Implement _read to comply with Readable streams * Doesn't really make sense for flowing object mode * * @private */ function _read() { }