Function startChrome

tooling/scripts/perf-web-runtime.mjs:297–331

({ debugPort, userDataDir })

}

function startChrome({ debugPort, userDataDir }) {
  const chromePath = findChromePath()
  const child = spawn(
    chromePath,
    [
      `--remote-debugging-port=${debugPort}`,
      `--user-data-dir=${userDataDir}`,
      '--headless=new',
      '--disable-background-networking',
      '--disable-default-apps',
      '--disable-extensions',
      '--disable-gpu',
      '--disable-sync',
      '--js-flags=--expose-gc',
      '--metrics-recording-only',
      '--no-default-browser-check',
      '--no-first-run',
      'about:blank'
    ],
    {
      stdio: ['ignore', 'pipe', 'pipe']
    }
  )
  let log = ''
  child.stdout.on('data', (chunk) => {
    log = appendBounded(log, chunk)
  })
  child.stderr.on('data', (chunk) => {
    log = appendBounded(log, chunk)
  })
  return {
    child,
    log: () => log
  }
}

class CdpClient {
  constructor(webSocketUrl) {