// @target: es2015

class A {
    static #fieldFunc = function () { this.x = 10; };
    static #fieldFunc2 = function (a, ...b) {};
    x = 1;
    test() {
        A.#fieldFunc();
        A.#fieldFunc?.();
        const func = A.#fieldFunc;
        func();
        new A.#fieldFunc();

        const arr = [ 1, 2 ];
        A.#fieldFunc2(0, ...arr, 3);
        const b = new A.#fieldFunc2(0, ...arr, 3);
        const str = A.#fieldFunc2`head${1}middle${2}tail`;
        this.getClass().#fieldFunc2`test${1}and${2}`;
    }
    getClass() { return A; }
}