SonyStone

export function isWebview() {
  const navigator = window.navigator;
  const userAgent = navigator.userAgent;
  const normalizedUserAgent = userAgent.toLowerCase();
  const standalone = (navigator as any).standalone;

  const isIos =
    /ip(ad|hone|od)/.test(normalizedUserAgent) ||
    (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1);
  const isAndroid = /android/.test(normalizedUserAgent);

SonyStone

import { BreakpointObserver } from '@angular/cdk/layout';
import {
  Directive,
  EmbeddedViewRef,
  Inject,
  inject,
  InjectionToken,
  Input,
  OnDestroy,
  TemplateRef,

SonyStone

Ok, you see here we are taking the user idToken as Observable. I am not sure is it a stream or signal but for reactive programming it's very critical

Stream — A stream of discrete events. Also known in other FRP systems as an event, like keyboard input events, WebSocket events, login/logout events etc. (in rxjs — Subject, Observable)

Signal — A container/store for a value that changes over time. Some FRP systems call it a behavior, property, cell or signal, like isLogin state, key press state, current user state etc. (in rxjs — BehaviorSubject, ReplaySubject(1), shareReplay(1)).

For example in Angular components @Output is a stream, and @Input is a signal