index.js

/*global define:false require:false */
module.exports = (function(){
	// Import Events
	var events = require('events')

	// Export Domain
	var domain = {}
	domain.createDomain = domain.create = function(){
		var d = new events.EventEmitter()

		function emitError(e) {
			d.emit('error', e)
		}

		d.add = function(emitter){
			emitter.on('error', emitError)
		}
		d.remove = function(emitter){
			emitter.removeListener('error', emitError)
		}
		d.bind = function(fn){
			return function(){
				var args = Array.prototype.slice.call(arguments)
				try {
					fn.apply(null, args)
				}
				catch (err){
					emitError(err)
				}
			}
		}
		d.intercept = function(fn){
			return function(err){
				if ( err ) {
					emitError(err)
				}
				else {
					var args = Array.prototype.slice.call(arguments, 1)
					try {
						fn.apply(null, args)
					}
					catch (err){
						emitError(err)
					}
				}
			}
		}
		d.run = function(fn){
			try {
				fn()
			}
			catch (err) {
				emitError(err)
			}
			return this
		};
		d.dispose = function(){
			this.removeAllListeners()
			return this
		};
		d.enter = d.exit = function(){
			return this
		}
		return d
	};
	return domain
}).call(this)