AddTwoPromise.js

// Given two promises promise1 and promise2, return a new promise. promise1 and promise2 will both resolve with a number. The returned promise should resolve with the sum of the two numbers.

// promise1 = new Promise(resolve => setTimeout(() => resolve(2), 20)), 
// promise2 = new Promise(resolve => setTimeout(() => resolve(5), 60))
// Output: 7
// Explanation: The two input promises resolve with the values of 2 and 5 respectively. The returned promise should resolve with a value of 2 + 5 = 7. The time the returned promise resolves is not judged for this problem.

/**
 * @param {Promise} promise1
 * @param {Promise} promise2
 * @return {Promise}
 */
var addTwoPromises = async function (promise1, promise2) {
    let sum = await Promise.all([promise1, promise2]).then(([num1, num2]) => num1 + num2);
    return sum;


};

// Both are same only logic has been different 

var addTwoPromises = async function (promise1, promise2) {
    const val1 = await promise1
    const val2 = await promise2

    return val1 + val2
};