node_modules

1 files changed, 132 insertions, 0 deletions

diff --git a/node_modules/event-emitter/index.js b/node_modules/event-emitter/index.js
new file mode 100644
index 000000000..c36d3e49a
--- /dev/null
+++ b/node_modules/event-emitter/index.js
@@ -0,0 +1,132 @@
+'use strict';
+
+var d        = require('d')
+  , callable = require('es5-ext/object/valid-callable')
+
+  , apply = Function.prototype.apply, call = Function.prototype.call
+  , create = Object.create, defineProperty = Object.defineProperty
+  , defineProperties = Object.defineProperties
+  , hasOwnProperty = Object.prototype.hasOwnProperty
+  , descriptor = { configurable: true, enumerable: false, writable: true }
+
+  , on, once, off, emit, methods, descriptors, base;
+
+on = function (type, listener) {
+	var data;
+
+	callable(listener);
+
+	if (!hasOwnProperty.call(this, '__ee__')) {
+		data = descriptor.value = create(null);
+		defineProperty(this, '__ee__', descriptor);
+		descriptor.value = null;
+	} else {
+		data = this.__ee__;
+	}
+	if (!data[type]) data[type] = listener;
+	else if (typeof data[type] === 'object') data[type].push(listener);
+	else data[type] = [data[type], listener];
+
+	return this;
+};
+
+once = function (type, listener) {
+	var once, self;
+
+	callable(listener);
+	self = this;
+	on.call(this, type, once = function () {
+		off.call(self, type, once);
+		apply.call(listener, this, arguments);
+	});
+
+	once.__eeOnceListener__ = listener;
+	return this;
+};
+
+off = function (type, listener) {
+	var data, listeners, candidate, i;
+
+	callable(listener);
+
+	if (!hasOwnProperty.call(this, '__ee__')) return this;
+	data = this.__ee__;
+	if (!data[type]) return this;
+	listeners = data[type];
+
+	if (typeof listeners === 'object') {
+		for (i = 0; (candidate = listeners[i]); ++i) {
+			if ((candidate === listener) ||
+					(candidate.__eeOnceListener__ === listener)) {
+				if (listeners.length === 2) data[type] = listeners[i ? 0 : 1];
+				else listeners.splice(i, 1);
+			}
+		}
+	} else {
+		if ((listeners === listener) ||
+				(listeners.__eeOnceListener__ === listener)) {
+			delete data[type];
+		}
+	}
+
+	return this;
+};
+
+emit = function (type) {
+	var i, l, listener, listeners, args;
+
+	if (!hasOwnProperty.call(this, '__ee__')) return;
+	listeners = this.__ee__[type];
+	if (!listeners) return;
+
+	if (typeof listeners === 'object') {
+		l = arguments.length;
+		args = new Array(l - 1);
+		for (i = 1; i < l; ++i) args[i - 1] = arguments[i];
+
+		listeners = listeners.slice();
+		for (i = 0; (listener = listeners[i]); ++i) {
+			apply.call(listener, this, args);
+		}
+	} else {
+		switch (arguments.length) {
+		case 1:
+			call.call(listeners, this);
+			break;
+		case 2:
+			call.call(listeners, this, arguments[1]);
+			break;
+		case 3:
+			call.call(listeners, this, arguments[1], arguments[2]);
+			break;
+		default:
+			l = arguments.length;
+			args = new Array(l - 1);
+			for (i = 1; i < l; ++i) {
+				args[i - 1] = arguments[i];
+			}
+			apply.call(listeners, this, args);
+		}
+	}
+};
+
+methods = {
+	on: on,
+	once: once,
+	off: off,
+	emit: emit
+};
+
+descriptors = {
+	on: d(on),
+	once: d(once),
+	off: d(off),
+	emit: d(emit)
+};
+
+base = defineProperties({}, descriptors);
+
+module.exports = exports = function (o) {
+	return (o == null) ? create(base) : defineProperties(Object(o), descriptors);
+};
+exports.methods = methods;