'use strict';
import Singleton from 'Singleton';

class ClassA extends Singleton {
    constructor() {
        super();
    }

    singletonMethod1() {
        // ...
    }

    singletonMethod2() {
        // ...
    }

    // ...
}

console.log(
    ClassA.instance === ClassA.instance,
    ClassA.instance === new ClassA,
    new ClassA === new ClassA
); // true, true, true