diff --git a/n3/index.d.ts b/n3/index.d.ts
new file mode 100644
index 0000000000..4e2dc55ce0
--- /dev/null
+++ b/n3/index.d.ts
@@ -0,0 +1,125 @@
+// Type definitions for N3
+// Project: https://github.com/RubenVerborgh/N3.js
+// Definitions by: Fred Eisele <https://github.com/phreed>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference types="node" />
+
+
+import * as fs from "fs";
+import * as stream from "stream";
+
+declare namespace N3 {
+
+    type ErrorCallback = (err: Error, result: any) => void;
+
+    interface Prefixes {
+        [key: string]: string;
+    }
+
+    interface LiteralValue {
+        value: string | number;
+    }
+
+    interface Triple {
+        subject: string,
+        predicate: string,
+        object: string,
+        graph?: string
+    }
+
+    interface BlankTriple {
+        predicate: string,
+        object: string
+    }
+
+
+    interface ParserConstructor {
+        new (options?: ParserOptions): N3Parser;
+        (options?: ParserOptions): N3Parser;
+    }
+    const Parser: ParserConstructor;
+
+    interface StreamParserConstructor {
+        new (options?: ParserOptions): N3StreamParser;
+        (options?: ParserOptions): N3StreamParser;
+    }
+    const StreamParser: StreamParserConstructor;
+
+    interface ParserOptions {
+        format?: string,
+        prefixes?: string[]
+    }
+
+    interface ParseCallback {
+        (error: Error, triple: Triple, prefixes: Prefixes): void;
+    }
+
+    interface Logger {
+        (message?: any, ...optionalParams: any[]): void;
+    }
+    interface N3Parser {
+        parse(input: string, callback: ParseCallback): void;
+        parse(subject: string, predicate: string, object: string): void;
+        parse(triple: Triple): void;
+        parse(stream: fs.ReadStream, log: Logger): void;
+    }
+
+    interface N3StreamParser extends N3Parser, fs.WriteStream {
+        pipe(consumer: stream.Writable | N3StreamWriter): void;
+    }
+
+
+    interface WriterConstructor {
+        new (options?: WriterOptions): N3Writer;
+        (options?: WriterOptions): N3Writer;
+
+        new (fd: any, options?: WriterOptions): N3Writer;
+        (fd: any, options?: WriterOptions): N3Writer;
+    }
+    const Writer: WriterConstructor;
+
+    interface N3Writer {
+        addTriple(subject: string, predicate: string, object: string): void;
+        addTriple(subject: string, predicate: string, object: string[]): void;
+        addTriple(triple: Triple): void;
+        end(err?: ErrorCallback, result?: any): void;
+        blank(ns: string, name: string): string;
+        blank(triple: BlankTriple[]): string;
+        list(triple: string[]): string[];
+    }
+
+    function StreamWriter(options: WriterOptions): N3StreamWriter;
+
+    interface N3StreamWriter extends N3Writer {
+        pipe(consumer: NodeJS.WritableStream): void;
+        pipe(consumer: stream.Writable): void;
+    }
+
+    interface WriterOptions {
+        format?: string,
+        prefixes?: Prefixes
+    }
+
+    interface N3StoreWriter extends N3Writer {
+        find(subject: string, predicate: string | null, object: string | null): Triple[];
+    }
+    function Store(): N3StoreWriter;
+
+    namespace Util {
+        function createLiteral(value: any): string;
+        function createLiteral(value: any, type: string): string;
+
+        function isIRI(value: string): boolean;
+        function isLiteral(value: string): boolean;
+        function getLiteralValue(value: string): string;
+        function getLiteralLanguage(value: string): string;
+        function getLiteralType(value: string): string;
+        function isBlank(value: string): boolean;
+        function isPrefixedName(name: string): boolean;
+        function expandPrefixedName(name: string, prefixes: Prefixes): string;
+    }
+}
+
+export = N3;
+
diff --git a/n3/n3-tests.ts b/n3/n3-tests.ts
index 0ca9c5385c..a7e529bc7d 100644
--- a/n3/n3-tests.ts
+++ b/n3/n3-tests.ts
@@ -1,5 +1,4 @@
-/// <reference path="./n3.d.ts" />
-/// <reference path="../node/node.d.ts" />
+/// <reference types="node" />
 
 import * as N3 from "n3";
 import * as fs from "fs";
@@ -63,7 +62,7 @@ function test_doc_rdf_stream_to_triples_1() {
 
     var streamParser = N3.StreamParser();
     var rdfStream = fs.createReadStream('cartoons.ttl');
-    // rdfStream.pipe(streamParser);
+    rdfStream.pipe(streamParser);
     streamParser.pipe(new SlowConsumer());
 
     class SlowConsumer extends stream.Writable {
@@ -107,12 +106,12 @@ function test_doc_from_triples_to_rdf_stream() {
 }
 
 function test_doc_from_triple_stream_to_rdf_stream() {
-    var streamParser = N3.StreamParser(),
-        // inputStream = fs.createReadStream('cartoons.ttl'),
-        streamWriter = N3.StreamWriter({ prefixes: { c: 'http://example.org/cartoons#' } });
-    // inputStream.pipe(streamParser);
+    var streamParser = new N3.StreamParser(),
+        inputStream = fs.createReadStream('cartoons.ttl'),
+        streamWriter = /* new */ N3.StreamWriter({ prefixes: { c: 'http://example.org/cartoons#' } });
+    inputStream.pipe(streamParser);
     streamParser.pipe(streamWriter);
-    // streamWriter.pipe(process.stdout);
+    streamWriter.pipe(process.stdout);
 }
 
 function test_doc_blank_nodes_and_lists() {
@@ -168,7 +167,7 @@ function test_doc_utility() {
     N3Util.isLiteral('"This word is "quoted"!"'); // true
     N3Util.isLiteral('"3"^^http://www.w3.org/2001/XMLSchema#integer'); // true
 
-    N3.Parser().parse('<a> <b> "This word is \\"quoted\\"!".', console.log);
+    new N3.Parser().parse('<a> <b> "This word is \\"quoted\\"!".', console.log);
     // { subject: 'a', predicate: 'b', object: '"This word is "quoted"!"' }
 
     N3Util.createLiteral('My text', 'en-gb');
diff --git a/n3/tsconfig.json b/n3/tsconfig.json
new file mode 100644
index 0000000000..53af13b215
--- /dev/null
+++ b/n3/tsconfig.json
@@ -0,0 +1,21 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6",
+        "noImplicitAny": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [
+            "node"
+        ],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "n3-tests.ts"
+    ]
+}
\ No newline at end of file