Exception handling in ES6

exception-handling-in-es6.js

// define an async operation that rejects if the path is not a string
const someAsyncOperation = async (path) => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (typeof path === 'string') {
        resolve(`Hello Panda! Path is = ${path}`);
      } else {
        reject(new Error(`Path is not a string. Path (${typeof path}) = ${path}`));
      }
    }, 1000);
  });
};

// handle exceptions the ES6 way with async-await
(async () => {
  try {
    const res = await someAsyncOperation(321);
    console.log(res);
  } catch (error) {
    console.error('(FROM ASYNC/AWAIT) Error cause is:', error);
  }
})();

// or the same the promise way
(() => {
  someAsyncOperation(123)
  .then((res) => {
    console.log(res);
  })
  .catch((error) => {
    console.error('(FROM PROMISE) Error cause is:', error);
  });
})();