diff --git a/test/test.ts b/test/test.ts
index 71e19a5..99e50f1 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -1,8 +1,8 @@
-import { expect, tap } from 'tapbundle'
-import * as commonlog from '../ts/index'
+import { expect, tap } from 'tapbundle';
+import * as commonlog from '../ts/index';
 
 tap.test('first test', async () => {
-  console.log('Since this is an interface package, there is nothing to test dynamically :)')
-})
+  console.log('Since this is an interface package, there is nothing to test dynamically :)');
+});
 
-tap.start()
+tap.start();
diff --git a/ts/index.ts b/ts/index.ts
index 8a1ebf7..68a3825 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1,10 +1,6 @@
-export type TLogLevel =
-  | "error"
-  | "warn"
-  | "info"
-  | "verbose"
-  | "debug"
-  | "silly";
+export type TLogLevel = 'error' | 'warn' | 'info' | 'verbose' | 'debug' | 'silly';
+export type TEnvironment = 'local' | 'test' | 'staging' | 'production';
+export type TRuntime = 'node' | 'browser';
 
 export interface ILogContext {
   zone?: string;
@@ -15,13 +11,12 @@ export interface ILogContext {
   runtime: TRuntime;
 }
 
-export type TEnvironment = "local" | "test" | "staging" | "production";
-export type TRuntime = "node" | "browser";
-
-export interface IHandleLogFunc {
-  (logObject): void
+export interface ILogPackage {
+  logContext: ILogContext;
+  logLevel: TLogLevel
+  message: string;
 }
 
 export interface ILogDestination {
-  handleLog: IHandleLogFunc
-}
\ No newline at end of file
+  handleLog: (ILogPackage) => void;
+}