Zizzamia/perfume.js

import { getDM, getHC, WN } from './constants';
import { et, sd } from './getNetworkInformation';
import { getIsLowEndDevice, getIsLowEndExperience } from './isLowEnd';
import { INavigatorInfo } from './types';

/**
 * Information coming from window.navigator:
 * 1. Device Memory
 * 2. Hardware Concurency
 * 3. Status of the service worker:
 *    - controlled: a service worker is controlling the page
 *    - supported: the browser supports service worker
 *    - unsupported: the user's browser does not support service worker
 */
export const getNavigatorInfo = (): INavigatorInfo => {
  if (WN) {
    return {
      deviceMemory: getDM() || 0,
      hardwareConcurrency: getHC() || 0,
      serviceWorkerStatus:
        'serviceWorker' in WN
          ? WN.serviceWorker.controller
            ? 'controlled'
            : 'supported'
          : 'unsupported',
      isLowEndDevice: getIsLowEndDevice(),
      isLowEndExperience: getIsLowEndExperience(et, sd),
    };
  }
  return {};
};