‘await Unexpected identifier’ on Node.js 7.5

by

Thanks to the other commenters and some other research await can only be used in an async function e.g.

async function x() {
  var obj = await new Promise(function(resolve, reject) {
    setTimeout(function() {
      resolve({a:42});
    },100);
  });
  return obj;
}

I could then use this function as a Promise e.g.

x().then(console.log)

or in another async function.

Confusingly, the Node.js repl doesn’t allow you to do

await x();

where as the RunKit notebook environment does.

More Related Contents:

  1. Is it an anti-pattern to use async/await inside of a new Promise() constructor?
  2. Understanding the Event Loop
  3. Callback after all asynchronous forEach callbacks are completed
  4. I know that callback function runs asynchronously, but why?
  5. Are all javascript callbacks asynchronous? If not, how do I know which are?
  6. Asynchronous exception handling with bluebird promises
  7. JavaScript, Node.js: is Array.forEach asynchronous?
  8. nodeJs callbacks simple example
  9. Best way to call an asynchronous function within map?
  10. How to avoid long nesting of asynchronous functions in Node.js
  11. Node JS Promise.all and forEach
  12. How to write asynchronous functions for Node.js
  13. Understanding Asynchronous Code in Layman’s terms
  14. How to wrap async function calls into a sync function in Node.js or Javascript?
  15. node.js async/await using with MySQL
  16. Are all Node.js callback functions asynchronous?
  17. Understanding async/await on NodeJS
  18. using async await and .then together
  19. Node js socket explanation
  20. How to handle errors from setTimeout in JavaScript?
  21. Asynchronous constructor
  22. Using mongoose promises with async/await
  23. javascript – Why is there a spec for sync and async modules?
  24. How do you create custom asynchronous functions in node.js?
  25. Why is node.js asynchronous?
  26. Javascript Asynchronous Exception Handling with node.js
  27. How to use the ‘main’ parameter in package.json?
  28. Does an async function always need to be called with await?
  29. Using Async waterfall in node.js
  30. ASYNC / AWAIT SyntaxError: await is only valid in async functions and the top level bodies of modules

Leave a Comment