// ChromiumHeadless BROWSER
// https://github.com/karma-runner/karma-chrome-launcher#headless-chromium-with-puppeteer
const ChromiumRevision = require('puppeteer/package.json').puppeteer.chromium_revision;
const Downloader = require('puppeteer/utils/ChromiumDownloader');

const revisionInfo = Downloader.revisionInfo(Downloader.currentPlatform(), ChromiumRevision);

process.env.CHROMIUM_BIN = revisionInfo.executablePath;

// ...

karmaConfig = {
        // Configuration for the ChromiumHeadless BROWSER
        // https://github.com/GoogleChrome/puppeteer/issues/290#issuecomment-324448524
        // https://github.com/karma-runner/karma-chrome-launcher/issues/73#issuecomment-247323225
        customLaunchers: {
            ChromiumHeadlessConfigured: {
                base: 'ChromiumHeadless',
                flags: ['--no-sandbox', '--disable-setuid-sandbox']
            }
        },

        browsers: ['ChromiumHeadlessConfigured'],
        /// ....
}