Add definitions for unique-random

unique-random/unique-random.d.ts

@@ -0,0 +1,10 @@
+// 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;
+}