create: auth module, controller and service

src/auth/auth.controller.ts

@@ -0,0 +1,17 @@
+import { Controller, Post } from '@nestjs/common';
+import { AuthService } from './auth.service';
+
+@Controller('auth')
+export class AuthController {
+  constructor(private authService: AuthService) {}
+
+  @Post('signup')
+  signup() {
+    return this.authService.signup();
+  }
+
+  @Post('signin')
+  signin() {
+    return this.authService.signin();
+  }
+}

src/auth/auth.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+
+@Module({
+  controllers: [AuthController],
+  providers: [AuthService],
+})
+export class AuthModule {}

src/auth/auth.service.ts

@@ -0,0 +1,12 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable({})
+export class AuthService {
+  signup() {
+    return { msg: 'I am signed up' };
+  }
+
+  signin() {
+    return { msg: 'I am signed in' };
+  }
+}