internet connection.ts

initService() {
    const conn = (navigator as any).connection;
    if (conn) {
      if (conn.saveData) {
        // do something
      }
      const connectionlist = ["slow-2g", "2g", "3g", "4g"];
      const effectiveType = conn.effectiveType;
      console.log(effectiveType);
    }
  }