Run to completion (Part 2)

run-to-completion-function-1.js

const doLongOperation = (operation) => new Promise((resolve, reject) => {
  if (operation) {
    console.log('Lets resolve the operation');
    resolve(operation);
  } else {
    console.log('Lets reject the operation');
    reject(new Error("Empty operation !"));
  }
});

const doOperations = async (x, y) => {
  try {
    const operation1 = await doLongOperation(x + y);
    console.log('operation1 : ', operation1);
    const operation2 = operation1 - y;
    console.log('operation2 : ', operation2);
    const operation3 = (operation1 * operation2) + 2 * (x - y);
    console.log('operation3 : ', operation3);
    return operation3;
  } catch (error) {
    // catches errors
    console.log('error : ', error);
  }
}

doOperations(3, 2)
  .then(value => console.log('value : ', value));

console.log('Lets continue others staff');
/*
"Lets resolve the operation"
"Lets continue others staff"
"operation1 : ", 5
"operation2 : ", 3
"operation3 : ", 17
"value : ", 17
*/