let x = 10;
let y = x * 2;
print(y);

let arr = [1, 2, 3, 4, 5];
let sum = arr.reduce((a, b) => a + b, 0);
print(sum);

let arr = [1, 2, 3, 4, 5];
let newArr = arr.map((num) => num * 2);
print(newArr);

let worker = new Worker('worker.js');
worker.postMessage('Hello, worker');
worker.onmessage = (event) => {
  print(event.data);
};

class Person {
  constructor(name, age) {
    this.name = name;
    this.age = age;
  }

  greet() {
    print(`Hello, my name is ${this.name} and I am ${this.age} years old.`);
  }
}

let john = new Person('John', 30);
john.greet();

async function asyncFunc() {
  let response = await fetch('https://api.example.com/data');
  let data = await response.json();
  return data;
}

asyncFunc().then((data) => print(data));