await-fail.js

// basic error handling with async functions
async function getData(param) {
   if (isBad(param)) {
      throw new Error("this is a bad param")
   }
   // ...
}

// basic promise-based error handling example
function getData(param) {
   if (isBad(param)) {
      return Promise.reject(new Error("this is a bad param"))
   }
   // ...
}