Async not working as expected. "Not Found" instantly.

node.js version: 12.8.1

npm/yarn and version: 6.10.2

koa-router version: 7.4.0

koa version: 2.6.2

Code sample:

router.get('/async', async (ctx) => {
  return new Promise((resolve, reject) => {
    console.log('wait...');
    setTimeout(() => {
      ctx.ok('ok after 1s');
      console.log('resolve');
      resolve('asd');
    }, 1000);
  });
});

Expected Behavior:

the request should wait 1s before responding with either ‘ok after 1s’ or ‘asd’

Actual Behavior:

instant response with “Not Found” although timeout is started and stopped as expected. But the results from the timeout not appearing in response since response is already output and connection closed (prematurely IMHO)

[lichaozhy]

I guess the cause may just be some middlewares not calling return next() correctlly. Specially, the router middleware is an async function but parent middlewares are normal sync functions. I think you should check all of your middlewares has been called return next() strictly or not.

I often made mistakes like yours when I was young. Good luck~~

[spidgorny]

You are right, there was a middleware above which was not using async/await. I was trying to fix it in the wrong place. This is fixed now.