import { Inject, Injectable, PLATFORM_ID } from '@angular/core' import { isPlatformBrowser, isPlatformServer } from '@angular/common' @Injectable() export class PlatformService { constructor(@Inject(PLATFORM_ID) private platformId: any) { } public isBrowser(): boolean { return isPlatformBrowser(this.platformId) } public isServer(): boolean { return isPlatformServer(this.platformId) } }