Method equals

deps/v8/test/mjsunit/harmony/private-methods.js:57–59

(obj)

      return this.#a + 1;
    }
    equals(obj) {
      return this.#getAPlus1() === obj.#getAPlus1();
    }
  }
  const c = new C(0);
  const c2 = new C(2);