First Note!

For testing purpose only

Developing

sudo apt in-development

Code syntax Test

class Calculator {
  constructor(a, b) {
    this.a = a;
    this.b = b;
  }

  add() {
    return this.a + this.b;
  }
}

const calc = new Calculator(7, 5);
console.log(calc.add()); // return 12