Extra parentheses and spaces added to TypeScript

[David-Else]

Prettier 1.19.1
Playground link

--parser babel

Input:

class GameObject {
  constructor({
    position,
    velocity,
    Physics,
    Graphics,
    Input,
  }: {
    position: Vector2;
    velocity: Vector2;
    Physics: {
      new (): PhysicsComponent;
    };
    Graphics: {
      new (): GraphicsComponent;
    };
    Input: {
      new (): InputComponent;
    };
  }) {
    this.position = position,
    this.velocity = velocity,
    this.input = new Input();
    this.physics = new Physics();
    this.graphics = new Graphics();
  }
}

Output:

class GameObject {
  constructor({
    position,
    velocity,
    Physics,
    Graphics,
    Input
  }: {
    position: Vector2,
    velocity: Vector2,
    Physics: {
      new(): PhysicsComponent
    },
    Graphics: {
      new(): GraphicsComponent
    },
    Input: {
      new(): InputComponent
    }
  }) {
    (this.position = position),
      (this.velocity = velocity),
      (this.input = new Input());
    this.physics = new Physics();
    this.graphics = new Graphics();
  }
}

Expected behavior:

    this.position = position,
    this.velocity = velocity,
    this.input = new Input();
    this.physics = new Physics();
    this.graphics = new Graphics();

[thorn0]

Works as intended. That's how Prettier formats the comma operator. I think you used this operator instead of semicolons by mistake.

[David-Else]

@thorn0 You are right! Thanks :)