I just don’t know where to search and don’t really understand why it’s not working

I have done everything from the doc. One things strange is that @Body is returning a function and not the body object.

// main.ts
async function bootstrap() {
   const app = await NestFactory.create(AppModule, {cors: {origin: process.env.CORS_ORIGIN, credentials: true}});

  app.use(cookieParser());

  app.useGlobalPipes(new ValidationPipe({transform: true, whitelist: true}));

  const configService = app.get(ConfigService);

  const port = assertDefined(configService.get<string>('app.port'), 'Environment variable PORT is not defined');

  await app.listen(port);
}

void bootstrap();

// register.dto.ts

import {IsEmail, IsString} from 'class-validator';

class RegisterDto {
  @IsEmail()
  @IsString()
  email!: string;

  @IsString()
  username!: string;

  @IsString()
  password!: string;
}

export type {RegisterDto};

// auth.controller.ts

import {
  Body,
  Controller,
  HttpCode,
  HttpStatus,
  Post,
} from '@nestjs/common';

import {AuthService} from './auth.service';
import {Public} from './decorators/public.decorator';
import {LoginDto} from './dtos/login.dto';
import {RegisterDto} from './dtos/register.dto';

@Controller('auth')
export class AuthController {
  constructor(private readonly authService: AuthService) { }

  @Public()
  @HttpCode(HttpStatus.OK)
  @Post('login')
  async login(@Body() loginDto: LoginDto) {
    return this.authService.login(loginDto);
  }

  @Public()
  @HttpCode(HttpStatus.CREATED)
  @Post('register')
  async register(@Body() registerDto: RegisterDto) {
    return this.authService.register(registerDto);
  }
}

I tried to wipe my dependencies but still the same.

I’m a bit lost

Thank you