Answers for ""when.promise" async await"

nodejs promise async

// server.js
 
function square(x) {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(Math.pow(x, 2));
    }, 2000);
  });
}
 
async function layer(x)
{
  const value = await square(x);
  console.log(value);
}
 
layer(10);

nodejs promise async

// Normal Function
function add(a,b){
  return a + b;
}
// Async Function
async function add(a,b){
  return a + b;
}

"when.promise" async await

/* Promise */somePromiseFunction()  .catch(error => handlerErrorFunction(error))  .then(() => doSomethingFunction());/* async/await */try {  await somePromiseFunction();} catch (error) {  handleErrorFunction(error);} finally {  doSomethingFunction();}

"when.promise" async await

/* Promise */const promiseFunction = () => {  ...  return somePromiseFunction();}/* async/await */const asyncFunction = async () => {  ...  return await somePromiseFunction();}