diff --git a/node-polyglot/node-polyglot-tests.ts b/node-polyglot/node-polyglot-tests.ts
new file mode 100644
index 0000000000..fee07d79e9
--- /dev/null
+++ b/node-polyglot/node-polyglot-tests.ts
@@ -0,0 +1,47 @@
+import Polyglot = require("node-polyglot");
+
+function instantiatePolyglot(): void {
+	var polyglot = new Polyglot();
+	var phrasedPolyglot = new Polyglot({phrases: {"hello": "Hello"}});
+	var localePolyglot = new Polyglot({locale: "fr"});
+}
+
+function translate(): void {
+	var polyglot = new Polyglot();
+
+	polyglot.extend({
+		"hello": "Hello",
+		"hello_name": "Hola, %{name}.",
+		"nav": {
+			"sidebar": {
+				"welcome": "Welcome"
+			}
+		},
+		"num_cars": "%{smart_count} car |||| %{smart_count} cars"
+	});
+
+	polyglot.t("hello");
+	polyglot.t("hello_name");
+	polyglot.t("nav.sidebar.welcome");
+	polyglot.t("num_cars", {smart_count: 0});
+	polyglot.t("num_cars", 0);
+	polyglot.t("hello_name", {name: "Spike"});
+	polyglot.t("i_like_to_write_in_language", {
+		_: "I like to write in %{language}.",
+		language: "Javascript"
+	});
+
+	polyglot.replace({
+		"hello": "hey",
+		"nav": {
+			"sidebar": {
+				"welcome": "Greetings"
+			}
+		}
+	});
+
+	polyglot.clear();
+
+	polyglot.locale("fr");
+	polyglot.locale();
+}
diff --git a/node-polyglot/node-polyglot.d.ts b/node-polyglot/node-polyglot.d.ts
new file mode 100644
index 0000000000..1b3469f028
--- /dev/null
+++ b/node-polyglot/node-polyglot.d.ts
@@ -0,0 +1,42 @@
+// Type definitions for node-polyglot v0.4.1
+// Project: https://github.com/airbnb/polyglot.js
+// Definitions by: Tim Jackson-Kiely <https://github.com/timjk>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "node-polyglot" {
+	module Polyglot {
+		interface InterpolationOptions {
+			name?: string;
+			smart_count?: number;
+			_?: string;
+		}
+
+		interface PolyglotOptions {
+			phrases?: any;
+			locale?: string;
+		}
+	}
+
+	class Polyglot {
+		constructor(options?: Polyglot.PolyglotOptions);
+
+		extend(phrases: any): void;
+
+		t(phrase: string): string;
+
+		t(phrase: string, smartCount: number): string;
+
+		t(phrase: string, interpolationOptions: Polyglot.InterpolationOptions): string;
+
+		clear(): void;
+
+		replace(phrases: any): void;
+
+		locale(): string;
+
+		locale(locale: string): void;
+	}
+
+	export = Polyglot;
+}
+