Async example: Error: connect ECONNREFUSED 127.0.0.1:80

HI , I’m on the window 7, when i run npm test in examples/async, it produced errors below:

$ npm test

> @ test D:\study\jest\examples\async
> jest


 RUNS  __tests__\user-test.js
events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: connect ECONNREFUSED 127.0.0.1:80
    at Object.exports._errnoException (util.js:1026:11)
    at exports._exceptionWithHostPort (util.js:1049:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1085:14)
npm ERR! Test failed.  See above for more details.

then, I checked the 80 port, but found nothing:

Administrator@USER-20150722FJ D:\study\jest\examples\async      
$ netstat -ano | findstr "127.0.0.1:80"                         

[frevib]

@dYb Did you run Jest with --no-cache once, or ran it for the first time with babel-jest > ‘9.0.3’? Which version of Node are you running?

I have this issue with all ^9.0.0 versions of babel-jest ( ‘9.0.1’, ‘9.0.2’, ‘9.0.3’). ‘10.0.1’ works and so does 16 and 17.

edit: tested here on a Windows 10 machine, babel-jest ^9.0.0 not working, 16 and 17 works fine.

[frevib]

@cpojer You’re right, this isn’t the issue, although it works somehow for me (I’m on OSX Sierra).

The example uses babel-jest ^9.0.0. Upgrading to 16.0.0 and running jest --no-cache once also solved the issue for me.