TypeError: Class constructor Actor cannot be invoked without 'new'

[nparoski]

Steps to Reproduce

1. npx create-nx-workspace
2. nx g @nx/web:application game
3. Try to extend Actor
4. Error

Expected Result

I'm expecting this code snippet to work and compile without any errors.

export default class Player extends Actor {
  constructor(actorProps: ActorArgs, game: Engine) {
    super({
      width: 96,
      height: 96,
      color: Color.DarkGray,
      pos: vec(game.halfDrawWidth, game.halfDrawHeight),
      ...actorProps,
    });
  }
}

Actual Result

main.6b38f55fbbef9977.js:223 Uncaught (in promise) TypeError: Class constructor Actor cannot be invoked without 'new'
    at new Player (main.6b38f55fbbef9977.js:223:44187)
    at main.6b38f55fbbef9977.js:223:46937
    at main.6b38f55fbbef9977.js:223:46741
    at Object.next (main.6b38f55fbbef9977.js:223:46857)
    at asyncGeneratorStep (main.6b38f55fbbef9977.js:223:45569)
    at _next (main.6b38f55fbbef9977.js:223:47444)
    at main.6b38f55fbbef9977.js:223:47594
    at new Promise (<anonymous>)
    at main.6b38f55fbbef9977.js:223:47356
    at 149 (main.6b38f55fbbef9977.js:223:47611)

Clicking on error displays this (line 3 is where error is at)

       var Player = function(Actor) {
            function Player(actorProps, game) {
                return Actor.call(this, player_extends({ // <------- this is where error is at.
                    width: 96,
                    height: 96,
                    color: __webpack_exports__Color.DarkGray,
                    pos: __webpack_exports__vec(game.halfDrawWidth, game.halfDrawHeight)
                }, actorProps))
            }
            return !function(subClass, superClass) {
                if ("function" != typeof superClass && null !== superClass)
                    throw TypeError("Super expression must either be null or a function");
                subClass.prototype = Object.create(superClass && superClass.prototype, {
                    constructor: {
                        value: subClass,
                        writable: !0,
                        configurable: !0
                    }
                }),
                superClass && player_set_prototype_of(subClass, superClass)
            }(Player, Actor),
            Player.prototype.onInitialize = function(engine) {
                console.log(engine),
                this.graphics.use(idleAnimation),
                this.graphics.add("run", runAnimation)
            }
            ,
            Player
        }(__webpack_exports__Actor);

Environment

• tsconfig.json: compilerOptions.target: es2015. i've changed it to es6 but no difference
• tsconfig:

{
  "compileOnSave": false,
  "compilerOptions": {
    "rootDir": ".",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "target": "es2015",
    "module": "esnext",
    "lib": ["es2020", "dom"],
    "skipLibCheck": true,
    "skipDefaultLibCheck": true,
    "baseUrl": ".",
    "paths": {}
  },
  "exclude": ["node_modules", "tmp"]
}

• nx: 16.7.2
• @nx/web 16.7.1
• browsers and versions: Chrome 115.0.5790.171 (Official Build) (64-bit)
• operating system: Windows 10
• Excalibur versions: 0.28

[nparoski]

Repo link https://github.com/nparoski/web-game

[eonarheim]

Hi @nparoski thanks for the issue!

I'll look into this, I haven't seen this before!

[nparoski]

@eonarheim there is branch called, feature/es6-classes I belive. (Thought I linked to it but just saw I didnt.)

Also Im not seeing any difference when changing tsconfig compilerOptions.target to es6 in bundles. Might be related to nx and not excalibur at all🤔

Thanks for help and time.

[nparoski]

Also opened issue on nx/web about it.nrwl/nx#18735

[nparoski]

@eonarheim Error is resolved and it indeed was problem with nx using swc under the hood. You can checkout nrwl/nx#18735 to see more details

[github-actions]

This issue hasn't had any recent activity lately and is being marked as stale automatically.

[eonarheim]

Closing for now! Let me know if we should update some docs!