diff --git a/unique-random/unique-random-tests.ts b/unique-random/unique-random-tests.ts
new file mode 100644
index 0000000000..428d1c77ee
--- /dev/null
+++ b/unique-random/unique-random-tests.ts
@@ -0,0 +1,5 @@
+/// <reference path="./unique-random.d.ts" />
+
+import uniqueRandom = require("unique-random");
+const rand = uniqueRandom(1, 10);
+const num: number = rand();
diff --git a/unique-random/unique-random.d.ts b/unique-random/unique-random.d.ts
new file mode 100644
index 0000000000..caa467bdaf
--- /dev/null
+++ b/unique-random/unique-random.d.ts
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+// Type definitions for unique-random
+// Project: https://github.com/sindresorhus/unique-random
+// Definitions by: Yuki Kokubun <https://github.com/Kuniwak>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "unique-random" {
+  function uniqueRandom(min: number, max: number): () => number;
+
+  export = uniqueRandom;
+}