Body validation is not working

[ghost]

The Body decoration does not seem to be working

Example code:

import "reflect-metadata";
import {
  JsonController,
  Body,
  Post,
  createExpressServer
} from "routing-controllers";
import { IsEmail, MinLength } from "class-validator";

class NewUserDto {
  @IsEmail() email: string;
  @MinLength(8)
  password: string;
}

@JsonController("/user")
class UserController {
  @Post("/")
  createUser(@Body() user: NewUserDto) {
    return user;
  }
}

const app = createExpressServer({ controllers: [UserController] });
app.listen(8080, () => console.log("listening on port 8080"));

If I send a POST request to localhost:8080/user with the following JSON data

{
  "email": "asdf",
  "password": "asdf"
}

The server respondes with

{
    "email": "asdf",
    "password": "asdf"
}

instead of the expect 400 response I would expect since the email and password fields are invalid

My dependencies are:

"body-parser": "^1.18.3",
"class-validator": "^0.9.1",
"express": "^4.16.3",
"reflect-metadata": "^0.1.12",
"routing-controllers": "^0.7.7",
"ts-node": "^7.0.0",
"typescript": "^2.9.2"

[ghost]

This is a clone of #384

[github-actions]

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