update TypeScript definition

Author: David Dios

tiny-lru.d.ts

@@ -2,6 +2,12 @@ declare module "tiny-lru" {
   class Lru<T = any> {
     constructor(max?: number, ttl?: number);
 
+    public max: number;
+    public ttl: number;
+    public size: boolean;
+    public first: T | null;
+    public last: T | null;
+
     public has(key: string): boolean;
     public get(key: string): T | undefined;
     public set(key: string, value: T, bypass?: boolean): this;