node_modules

1 files changed, 42 insertions, 0 deletions

diff --git a/node_modules/event-emitter/pipe.js b/node_modules/event-emitter/pipe.js
new file mode 100644
index 000000000..0088efefa
--- /dev/null
+++ b/node_modules/event-emitter/pipe.js
@@ -0,0 +1,42 @@
+'use strict';
+
+var aFrom          = require('es5-ext/array/from')
+  , remove         = require('es5-ext/array/#/remove')
+  , value          = require('es5-ext/object/valid-object')
+  , d              = require('d')
+  , emit           = require('./').methods.emit
+
+  , defineProperty = Object.defineProperty
+  , hasOwnProperty = Object.prototype.hasOwnProperty
+  , getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+
+module.exports = function (e1, e2/*, name*/) {
+	var pipes, pipe, desc, name;
+
+	(value(e1) && value(e2));
+	name = arguments[2];
+	if (name === undefined) name = 'emit';
+
+	pipe = {
+		close: function () { remove.call(pipes, e2); }
+	};
+	if (hasOwnProperty.call(e1, '__eePipes__')) {
+		(pipes = e1.__eePipes__).push(e2);
+		return pipe;
+	}
+	defineProperty(e1, '__eePipes__', d('c', pipes = [e2]));
+	desc = getOwnPropertyDescriptor(e1, name);
+	if (!desc) {
+		desc = d('c', undefined);
+	} else {
+		delete desc.get;
+		delete desc.set;
+	}
+	desc.value = function () {
+		var i, emitter, data = aFrom(pipes);
+		emit.apply(this, arguments);
+		for (i = 0; (emitter = data[i]); ++i) emit.apply(emitter, arguments);
+	};
+	defineProperty(e1, name, desc);
+	return pipe;
+};