optimize code

[stolsky]

Bad code from BaseObject

• [ ] improve JS code
• [ ] improve CSS code
  • check out mdn
• [x] replace getters and setters with functions returning this if return value is void

example from line 105ff

    set currentState(id) {
        if (isNumber(id) && this.#states instanceof Array) {
            if (id === 0) {
                this.#current_state = null;
            } else {
                this.#current_state = this.#states.find((state) => state.id === id);
            }
        }
    }

better:

    setCurrentState(id) {
        if (isNumber(id) && this.#states instanceof Array) {
                this.#current_state = this.#states.find((state) => state.id === id) ?? null;
        }
       return this;
    }