diff --git a/bcrypt-nodejs/bcrypt-nodejs-tests.ts b/bcrypt-nodejs/bcrypt-nodejs-tests.ts
new file mode 100644
index 0000000000..2a151c1c7e
--- /dev/null
+++ b/bcrypt-nodejs/bcrypt-nodejs-tests.ts
@@ -0,0 +1,30 @@
+/// <reference path="bcrypt-nodejs.d.ts" />
+
+import bCrypt = require("bcrypt-nodejs");
+
+function test_sync() {
+    var salt1 = bCrypt.genSaltSync();
+    var salt2 = bCrypt.genSaltSync(8);
+
+    var hash1 = bCrypt.hashSync('super secret');
+    var hash2 = bCrypt.hashSync('super secret', salt1);
+
+    var compare1 = bCrypt.compareSync('super secret', hash1);
+
+    var rounds1 = bCrypt.getRounds(hash2);
+}
+
+function test_async() {
+    var cbString = (error: Error, result: string) => {};
+    var cbVoid = () => {};
+    var cbBoolean = (error: Error, result: boolean) => {};
+
+    bCrypt.genSalt(8, cbString);
+
+    var salt = bCrypt.genSaltSync();
+    bCrypt.hash('super secret', salt, cbString);
+    bCrypt.hash('super secret', salt, cbVoid, cbString);
+
+    var hash = bCrypt.hashSync('super secret');
+    bCrypt.compare('super secret', hash, cbBoolean);
+}
\ No newline at end of file
diff --git a/bcrypt-nodejs/bcrypt-nodejs.d.ts b/bcrypt-nodejs/bcrypt-nodejs.d.ts
new file mode 100644
index 0000000000..e0a46ffa52
--- /dev/null
+++ b/bcrypt-nodejs/bcrypt-nodejs.d.ts
@@ -0,0 +1,68 @@
+// Type definitions for bcrypt-nodejs
+// Project: https://github.com/shaneGirish/bcrypt-nodejs
+// Definitions by: David Broder-Rodgers <https://github.com/DavidBR-SW/>
+// Definitions: https://github.com/DavidBR-SW/DefinitelyTyped
+
+declare module "bcrypt-nodejs" {
+    /**
+     * Generate a salt synchronously
+     * @param rounds Number of rounds to process the data for (default - 10)
+     * @return Generated salt
+     */
+    export function genSaltSync(rounds?: number): string;
+
+    /**
+     * Generate a salt asynchronously
+     * @param rounds Number of rounds to process the data for (default - 10)
+     * @param callback Callback with error and resulting salt, to be fired once the salt has been generated
+     */
+    export function genSalt(rounds: number, callback: (error: Error, result: string) => void): void;
+
+    /**
+     * Generate a hash synchronously
+     * @param data Data to be encrypted
+     * @param salt Salt to be used in encryption (default - new salt generated with 10 rounds)
+     * @return Generated hash
+     */
+    export function hashSync(data: string, salt?: string): string;
+
+    /**
+     * Generate a hash asynchronously
+     * @param data Data to be encrypted
+     * @param salt Salt to be used in encryption
+     * @param callback Callback with error and hashed result, to be fired once the data has been encrypted
+     */
+    export function hash(data: string, salt: string, callback: (error: Error, result: string) => void): void;
+
+    /**
+     * Generate a hash asynchronously
+     * @param data Data to be encrypted
+     * @param salt Salt to be used in encryption
+     * @param progressCallback Callback to be fired multiple times during the hash calculation to signify progress
+     * @param callback Callback with error and hashed result, to be fired once the data has been encrypted
+     */
+    export function hash(data: string, salt: string, progressCallback: () => void, callback: (error: Error, result: string) => void): void;
+
+    /**
+     * Compares data with a hash synchronously
+     * @param data Data to be compared
+     * @param hash Hash to be compared to
+     * @return true if matching, false otherwise
+     */
+    export function compareSync(data: string, hash: string): boolean;
+
+    /**
+     * Compares data with a hash asynchronously
+     * @param data Data to be compared
+     * @param hash Hash to be compared to
+     * @param callback Callback with error and match result, to be fired once the data has been compared
+     */
+    export function compare(data: string, hash: string, callback: (error: Error, result: boolean) => void): void;
+
+    /**
+     * Get number of rounds used for hash
+     * @param hash Hash from which the number of rounds used should be extracted
+     * @return number of rounds used to encrypt a given hash
+     */
+    export function getRounds(hash: string): number;
+}