class User {
  name: string;
  age: number;
  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  }
}

// no error for missing age, bad
const user1 = plainToClass(User, {
  name: 'test',
});

// error, good but verbose
const user2 = plainToClass<User, User>(User, {
  name: 'test',
});

function plainToClassInline<T>(cls: ClassType<T>, plain: T, options?: ClassTransformOptions): T;
function plainToClassInline<T>(cls: ClassType<T>, plain: T[], options?: ClassTransformOptions): T[];
function plainToClassInline<T>(cls: ClassType<T>, plain: T | T[], options?: ClassTransformOptions): T | T[] {
  return plainToClass(cls, plain, options);
}

// error. good and concise
const user3 = plainToClassInline(User, {
  name: 'test',
});