Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Launcher does not work with Firefox 61

See original GitHub issue

It seems like something has changed in Firefox 61 which has resulted in karma-firefox-launcher to be unable to properly start firefox. The following configuration works fine for firefox 60.

karma.conf
....
        browsers: ['FirefoxHeadless'],
        customLaunchers: {
            FirefoxHeadless: {
                base: 'Firefox',
                flags: [
                    '-headless'
                ],
            },
        },
....

> ng test --browsers FirefoxHeadless

 10% building modules 1/1 modules 0 active(node:70) DeprecationWarning: Tapable.plugin is deprecated. Use new API on `.hooks` instead
19 07 2018 16:28:03.691:INFO [karma]: Karma v1.7.1 server started at http://0.0.0.0:9876/
19 07 2018 16:28:03.693:INFO [launcher]: Launching browser FirefoxHeadless with unlimited concurrency
19 07 2018 16:28:03.698:INFO [launcher]: Starting browser Firefox
 20% building modules 91/105 modules 14 active …s/form-plugin/fesm5/ngxs-form-plugin.js19 07 2018 16:28:05.106:ERROR [launcher]: Cannot start Firefox	*** You are running in headless mode.

19 07 2018 16:28:05.107:ERROR [launcher]: Firefox stdout: 
19 07 2018 16:28:05.107:ERROR [launcher]: Firefox stderr: *** You are running in headless mode.

 24% building modules 120/147 modules 27 active …modules/core-js/modules/_string-trim.js19 07 2018 16:28:05.483:INFO [launcher]: Trying to start Firefox again (1/2).
 54% building modules 370/398 modules 28 active …nal/observable/ConnectableObservable.js19 07 2018 16:28:06.468:ERROR [launcher]: Cannot start Firefox
	*** You are running in headless mode.

19 07 2018 16:28:06.468:ERROR [launcher]: Firefox stdout: 
19 07 2018 16:28:06.469:ERROR [launcher]: Firefox stderr: *** You are running in headless mode.

 59% building modules 415/435 modules 20 active …modules/core-js/modules/es6.array.of.js19 07 2018 16:28:06.570:INFO [launcher]: Trying to start Firefox again (2/2).
 95% emitting CopyPlugin19 07 2018 16:28:12.559:ERROR [launcher]: Cannot start Firefox    
	*** You are running in headless mode.

19 07 2018 16:28:12.559:ERROR [launcher]: Firefox stdout: 
19 07 2018 16:28:12.559:ERROR [launcher]: Firefox stderr: *** You are running in headless mode.

19 07 2018 16:28:12.681:ERROR [launcher]: Firefox failed 2 times (cannot start). Giving up.

Issue Analytics

State:
Created 5 years ago
Reactions:5
Comments:8

Top GitHub Comments

2reactions

timbru31commented, Oct 18, 2018

I was able to fix the issue in our Dockerfile with Alpine. It seems the ttf-freefont package needs to be installed, otherwise Firefox will exit with a segfault.
You might want to give https://hub.docker.com/r/timbru31/node-alpine-firefox/ a try.

1reaction

timbru31commented, Aug 16, 2018

Update using the Firefox on my macOS works fine, while the alpine version is broken for us (https://pkgs.alpinelinux.org/package/edge/testing/x86_64/firefox)