diff --git a/sax/sax-tests.ts b/sax/sax-tests.ts
new file mode 100644
index 0000000000..3eeecc4fc3
--- /dev/null
+++ b/sax/sax-tests.ts
@@ -0,0 +1,43 @@
+/// <reference path="../node/node.d.ts" />
+/// <reference path="./sax.d.ts" />
+import sax = require("sax");
+
+var opts: sax.SAXOptions = {
+  lowercase: true,
+  normalize: true,
+  xmlns: true,
+  position: true
+};
+
+var parser = sax.parser(/*strict=*/true, opts);
+
+parser.onerror = function(e: Error) {
+};
+
+parser.ontext = function(text: string) {
+};
+
+parser.onopentag = function(tag: sax.Tag) {
+};
+
+parser.onattribute = function(attr: { name: string; value: string; }) {
+};
+
+parser.onend = function() {
+};
+
+parser.write("<xml>Hello, <who name=\"world\">world</who>!</xml>").close();
+
+
+var saxStream = sax.createStream(/*strict=*/true, opts);
+
+saxStream.on("error", function(e: Error) {
+  this._parser.error = null;
+  this._parser.resume();
+});
+
+import fs = require("fs");
+fs.createReadStream("file.xml")
+  .pipe(saxStream)
+  .pipe(fs.createWriteStream("file-copy.xml"));
+
diff --git a/sax/sax.d.ts b/sax/sax.d.ts
new file mode 100644
index 0000000000..fb3d7e7859
--- /dev/null
+++ b/sax/sax.d.ts
@@ -0,0 +1,78 @@
+// Type definitions for sax js
+// Project: https://github.com/isaacs/sax-js
+// Definitions by: Asana <https://asana.com>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+/// <reference path="../node/node.d.ts" />
+
+declare module "sax" {
+    export var EVENTS: string[];
+
+    interface SAXOptions {
+        trim?: boolean;
+        normalize?: boolean;
+        lowercase?: boolean;
+        xmlns?: boolean;
+        noscript?: boolean;
+        position?: boolean;
+    }
+
+    export interface Tag {
+        name: string;
+        attributes: { [key: string]: string };
+
+        // Available if opt.xmlns
+        ns?: { [key: string]: string };
+        prefix?: string;
+        local?: string;
+        uri?: string;
+    }
+
+    export function parser(strict: boolean, opt: SAXOptions): SAXParser;
+    export class SAXParser {
+        constructor(strict: boolean, opt: SAXOptions);
+
+        // Methods
+        end(): void;
+        write(s: string): SAXParser;
+        resume(): SAXParser;
+        close(): SAXParser;
+        flush(): void;
+
+        // Members
+        line: number;
+        column: number;
+        error: Error;
+        position: number;
+        startTagPosition: number;
+        closed: boolean;
+        strict: boolean;
+        opt: SAXOptions;
+        tag: string;
+
+        // Events
+        onerror(e: Error): void;
+        ontext(t: string): void;
+        ondoctype(doctype: string): void;
+        onprocessinginstruction(node: { name: string; body: string }): void;
+        onopentag(tag: Tag): void;
+        onclosetag(tagName: string): void;
+        onattribute(attr: { name: string; value: string }): void;
+        oncomment(comment: string): void;
+        onopencdata(): void;
+        oncdata(cdata: string): void;
+        onclosecdata(): void;
+        onopennamespace(ns: { prefix: string; uri: string }): void;
+        onclosenamespace(ns: { prefix: string; uri: string }): void;
+        onend(): void;
+        onready(): void;
+        onscript(script: string): void;
+    }
+
+    import stream = require("stream");
+    export function createStream(strict: boolean, opt: SAXOptions): SAXStream;
+    export class SAXStream extends stream.Duplex {
+        constructor(strict: boolean, opt: SAXOptions);
+        private _parser: SAXParser;
+    }
+}
+