appium/sample-code/javascript-wd/test/helpers/caps.js

import path from 'path';

const iosCaps = {
  platformName: 'iOS',
  automationName: 'XCUITest',
  deviceName:  process.env.IOS_DEVICE_NAME || 'iPhone 6s',
  platformVersion: process.env.IOS_PLATFORM_VERSION || '11.1',
  app: undefined, // Will be added in tests
};

// Leave the Android platformVersion blank and set deviceName to a random string (Android deviceName is ignored by Appium but is still required)
// If we're using SauceLabs, set the Android deviceName and platformVersion to the latest supported SauceLabs device and version
const DEFAULT_ANDROID_DEVICE_NAME = process.env.SAUCE_LABS ? 'Android GoogleAPI Emulator' : 'My Android Device';
const DEFAULT_ANDROID_PLATFORM_VERSION = process.env.SAUCE_LABS ? '7.1' : null;

const androidCaps = {
  platformName: 'Android',
  automationName: 'UiAutomator2',
  deviceName: process.env.ANDROID_DEVICE_NAME || DEFAULT_ANDROID_DEVICE_NAME,
  platformVersion: process.env.ANDROID_PLATFORM_VERSION || DEFAULT_ANDROID_PLATFORM_VERSION,
  app: undefined, // Will be added in tests
};

const serverConfig = process.env.SAUCE_LABS ? {
  host: 'ondemand.saucelabs.com',
  port: 80
} : {
  host: process.env.APPIUM_HOST || 'localhost',
  port: process.env.APPIUM_PORT || 4723
};

export { iosCaps, androidCaps, serverConfig };