Fixed Type definiton, added error

index.d.ts

@@ -10,4 +10,5 @@ declare class Log {
     debug(...message: any): string;
     warning(...message: any): string;
     log(...message: any): string;
+    error(...message: any): string;
 }

package.json

 {
   "name": "@libs/log",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "description": "A simple Logger with Options!",
   "main": "index.js",
   "scripts": {