How to use the @qawolf/config.CONFIG.headless function in @qawolf/config

const buildPuppeteerOptions = (
  options: PuppeteerLaunchOptions,
  device: Device
) => {
  const launchOptions: PuppeteerLaunchOptions = {
    args: [
      "--disable-dev-shm-usage",
      "--no-default-browser-check",
      "--window-position=0,0",
      `--window-size=${device.viewport.width + CONFIG.chromeOffsetX},${device
        .viewport.height + CONFIG.chromeOffsetY}`
    ],
    defaultViewport: null,
    headless: CONFIG.headless,
    ...options
  };

  if (platform() === "linux") {
    launchOptions!.args!.push("--disable-gpu");
    launchOptions!.args!.push("--disable-setuid-sandbox");
    launchOptions!.args!.push("--no-sandbox");
  }

  if (CONFIG.chromeExecutablePath) {
    launchOptions.executablePath = CONFIG.chromeExecutablePath;
  }

  return launchOptions;
};