nightwatch.config.js

const config = {
  webdriver: {
    start_process: true,
    server_path: "./node_modules/.bin/geckodriver",
    cli_args: ["--log", "debug"],
    port: 4444,
  },
  test_settings: {
    firefox: {
      desiredCapabilities: {
        browserName: "firefox",
        acceptInsecureCerts: true,
      },
    },
  },
};

module.exports = config;