Merge pull request #1 from AveselsJS/base-dependency-injection

Base dependency injection

README.md

@@ -0,0 +1 @@
+# Dependency Injection

src/app.ts

@@ -1,18 +1,19 @@
 import express, {Express} from 'express';
 import { Server} from 'http';
 import { ExeptionFilter } from './errors/exeption.filter';
+import { ILogger } from './logger/logger.interface';
 import { LoggerService } from './logger/logger.service';
 import { UserController } from './users/users.controller';
 
 export class App {
     app: Express;
     server: Server;
     port: number;
-    logger: LoggerService;
+    logger: ILogger;
     userController: UserController;
     exeptionFilter: ExeptionFilter;
 
-    constructor(logger: LoggerService, userController: UserController, exeptionFilter: ExeptionFilter) {
+    constructor(logger: ILogger, userController: UserController, exeptionFilter: ExeptionFilter) {
         this.app = express();
         this.port = 8000;
         this.logger = logger;

src/logger/logger.interface.ts

@@ -0,0 +1,6 @@
+export interface ILogger {
+    logger: unknown
+    log: (...args: unknown[]) => void; 
+    error: (...args: unknown[]) => void; 
+    warn: (...args: unknown[]) => void; 
+}

src/logger/logger.service.ts

@@ -1,7 +1,8 @@
 import {Logger} from 'tslog'
+import { ILogger } from './logger.interface';
 
-export class LoggerService {
-    private logger: Logger;
+export class LoggerService implements ILogger {
+    logger: Logger;
 
     constructor() {
         this.logger = new Logger({