typedserver/ts_web_serviceworker/classes.networkmanager.ts

import * as plugins from './plugins.js';
import { ServiceWorker } from './classes.serviceworker.js';

export class NetworkManager {
  public serviceWorkerRef: ServiceWorker;
  public webRequest: plugins.webrequest.WebRequest;

  public previousState: string;

  constructor(serviceWorkerRefArg: ServiceWorker) {
    this.serviceWorkerRef = serviceWorkerRefArg;
    this.webRequest = new plugins.webrequest.WebRequest();
    this.getConnection()?.addEventListener('change', () => {
      this.updateConnectionStatus();
    });
  }

  /**
   * gets the connection
   */
  public getConnection() {
    const navigatorLocal: any = self.navigator;
    return navigatorLocal?.connection;
  }

  public getEffectiveType() {
    return this.getConnection()?.effectiveType || '4g';
  }

  public updateConnectionStatus() {
    console.log(`Connection type changed from ${this.previousState} to ${this.getEffectiveType()}`);
  }
}