未捕获的类型错误：类扩展值 #<Object> 不是构造函数或 null

Question

My code works with all the other modules but JBehaviour is giving me this problem and idk what im doing wrong because it seems like I did everything right

Full Error: Uncaught TypeError: Class extends value # is not a constructor or null at Object. (C:\\Users\\etern\\Documents\\GameEngine\\src\\engine\\classes\\JBehaviour.js:3) at Object. (C:\\Users\\etern\\Documents\\GameEngine\\src\\engine\\classes\\JBehaviour.js:11)

test_game.js

const {Vector2, GameObject, Rigidbody2d, JBehaviour, Input} = require('./Core')

Core.js

//Structs
const Vector2 = require('./structs/Vector2')

//Classes
const GameObject = require('./classes/GameObject')
const Rigidbody2d = require('./classes/Rigidbody2d')
const JBehaviour = require('./classes/JBehaviour')
const Input = require('./classes/Input')


module.exports = {Vector2, GameObject, Rigidbody2d, JBehaviour, Input}

JBehaviour.js

    const Behaviour = require('./Behaviour')

class JBehaviour extends Behaviour{
    constructor(){
        super('JBehaviour')
    }
}


module.exports = JBehaviour

Behaviour.js

const Component = require('./Component')

class Behaviour extends Component{
    constructor(name){
        super(name)
        this.enabled = true
    }
}

Component.js

const OBJ = require('./Object')
class Component extends OBJ {
    constructor(name){
        super(name)
        this.gameObject = null
        this.tag = null
        this.transform = null
    }

    AssignGameObject(gameObject){
        this.gameObject = gameObject
        this.tag = gameObject.tag
        this.transform = gameObject.transform
    }

    CompareTag(tag){

        return (this.tag === tag)
    }
}

module.exports = Component

Object.js

class OBJ{
    constructor(name){
        this.name = name
    }

    static Destroy(object){
        delete object.name
    }

    static Instantiate(original){

        return new OBJ(original.name)
    }

    ToString(){

        return toString(this.name)
    }
}

module.exports = OBJ

Answer 1

You didn't export Behaviour , so the value returned by require('./Behaviour') is an empty object. Empty objects can't be extended from.

Export Behaviour like you do with JBehaviour :

module.exports = Behaviour