ScriptType does not support class syntax about engine HOT 4 OPEN

This also applies to other complex types: vec2, entity, ...

from engine.

Thanks @AlexAPPi, you've hit on an important point.

When an ES6 class members is defined, it is non configurable. Currently ScriptAttribute attempts to redefine the member using Object.defineProperty which effectively becomes a no-op. This prevents the type conversion and attribute events from working.

class Test { fail = 'should be overridden' }
Object.defineProperty(Test.prototype, 'fail',  { value: 100 });
test = new Test()
console.log(test.fail) // 'should be overridden'

I've created an editor repro here

For the time being, you'll need to avoid declaring attribute in the class body, or alternatively use the var MyClass = pc.createScript syntax. We plan on solving this limitation with the newer ESM Scripts

from engine.

At the moment, the issue can be very obscure, as it doesn't warn the developer. This can lead to bugs that are hard to debug. We should add a warning.

from engine.

Yep this is not ideal, but unfortunately I don't think this is possible to catch at run-time without instantiating the class first. A solution is to prevent users using the class notation or declaring members in the class body. Neither are ideal.

from engine.