Added TypeScript declaration file (#14)

Author: w8r

index.d.ts

@@ -0,0 +1,11 @@
+export declare type Item = any;
+export declare type Comparator<Item> = (a: Item, b: Item) => -1 | 0 | 1;
+
+export default class TinyQueue<Item> {
+  public data : Item[];
+  public length : number;
+  constructor (items? : Item[], compare? : Comparator<Item>);
+  peek () : Item;
+  pop () : Item;
+  push (Item) : void;
+}

package.json

@@ -6,6 +6,7 @@
   "module": "index.js",
   "jsdelivr": "tinyqueue.min.js",
   "unpkg": "tinyqueue.min.js",
+  "types": "index.d.ts",
   "scripts": {
     "lint": "eslint index.js test.js bench.js rollup.config.js",
     "pretest": "npm run lint",
@@ -18,7 +19,8 @@
   "files": [
     "index.js",
     "tinyqueue.js",
-    "tinyqueue.min.js"
+    "tinyqueue.min.js",
+    "index.d.ts"
   ],
   "repository": {
     "type": "git",