Added tests for through

through/through-tests.ts

@@ -0,0 +1,9 @@
+import through = require('through');
+
+var i = 0;
+through(
+	function () {
+		this.queue((i++).toString());
+	}, function () {
+		this.queue(null);
+	}, { autoDestroy: true }).pipe(process.stdout);

through/through.d.ts

@@ -0,0 +1,21 @@
+/// <reference path="../node/node.d.ts" />
+
+
+
+declare module "through" {
+	import Stream = require("stream");
+
+	function through(write: (data) => void,
+		end?: () => void,
+		opts?: {
+			autoDestroy: boolean;
+		}): through.ThroughStream;
+
+	module through {
+		export interface ThroughStream extends Stream.ReadWriteStream {
+			autoDestroy: boolean;
+		}
+	}
+
+	export = through;
+}