Support custom "Listening" pattern for startServerCommand

Running lhci using a php local server does not seem to work: Lighthouse isn’t picking up the server output.

With the following .lighthouserc.json:

{
  "ci": {
    "collect": {
      "numberOfRuns": 3,
      "startServerCommand": "php -S localhost:60000 ./server.php",
      "url": [
        "http://localhost:60000/nl/styleguide"
      ]
    }
  }
}

I get the following error:

$ lhci autorun
✅  .lighthouseci/ directory writable
✅  Configuration file found
✅  Chrome installation found
Healthcheck passed!

Started a web server with "php -S localhost:60000 ./server.php"...
WARNING: Timed out waiting for the server to start listening.
         Ensure the server prints "listening" when it is ready.

Even though the output from the server contains the word “listening”:

$ php -S localhost:60000 ./server.php
PHP 7.3.7 Development Server started at Tue Dec  3 09:54:41 2019
Listening on http://localhost:60000
Document root is /Users/harmen/Sites/foo
Press Ctrl-C to quit.

Not sure who’s at fault here, if I can debug this further please let me know, I’d like to help fix this.

[jzabala]

Thanks @patrickhulce.

Working on this one 🙂

[patrickhulce]

Sure if you want to! 😃

How about startServerReadyPattern? a string that gets new RegExp(options.startServerReadyPattern, 'i')'d and defaults to (listen|ready)