一个小窍门，在@angular/core的core.js里，InjectionToken的构造函数里添加一行打印语句，即可打印出所有Angular框架创建的injection token：
Jerry in InjectionToken Constructor: INJECTOR
23:03:28.895 core.js:804 Jerry in InjectionToken Constructor: Set Injector scope.
23:03:28.896 core.js:804 Jerry in InjectionToken Constructor: AnalyzeForEntryComponents
23:03:28.896 core.js:804 Jerry in InjectionToken Constructor: Renderer2Interceptor
23:03:28.897 core.js:804 Jerry in InjectionToken Constructor: SCHEDULER_TOKEN
23:03:28.898 core.js:804 Jerry in InjectionToken Constructor: Application Initializer
23:03:28.898 core.js:804 Jerry in InjectionToken Constructor: AppId
23:03:28.899 core.js:804 Jerry in InjectionToken Constructor: Platform Initializer
23:03:28.899 core.js:804 Jerry in InjectionToken Constructor: Platform ID
23:03:28.899 core.js:804 Jerry in InjectionToken Constructor: appBootstrapListener
23:03:28.899 core.js:804 Jerry in InjectionToken Constructor: Application Packages Root URL
23:03:28.899 core.js:804 Jerry in InjectionToken Constructor: LocaleId
23:03:28.900 core.js:804 Jerry in InjectionToken Constructor: DefaultCurrencyCode
23:03:28.900 core.js:804 Jerry in InjectionToken Constructor: Translations
23:03:28.900 core.js:804 Jerry in InjectionToken Constructor: TranslationsFormat
23:03:28.900 core.js:804 Jerry in InjectionToken Constructor: compilerOptions
23:03:28.900 core.js:804 Jerry in InjectionToken Constructor: AllowMultipleToken
23:03:28.901 core.js:804 Jerry in InjectionToken Constructor: Platform: core
23:03:28.901 core.js:804 Jerry in InjectionToken Constructor: DocumentToken
23:03:28.902 core.js:804 Jerry in InjectionToken Constructor: Location Initialized
23:03:28.902 core.js:804 Jerry in InjectionToken Constructor: appBaseHref
23:03:28.904 core.js:804 Jerry in InjectionToken Constructor: TRANSITION_ID
23:03:28.905 core.js:804 Jerry in InjectionToken Constructor: EventManagerPlugins
23:03:28.905 core.js:804 Jerry in InjectionToken Constructor: HammerGestureConfig
23:03:28.905 core.js:804 Jerry in InjectionToken Constructor: HammerLoader
23:03:28.906 core.js:804 Jerry in InjectionToken Constructor: Platform: browser
23:03:28.907 core.js:804 Jerry in InjectionToken Constructor: ROUTES
23:03:28.907 core.js:804 Jerry in InjectionToken Constructor: ROUTER_CONFIGURATION
23:03:28.908 core.js:804 Jerry in InjectionToken Constructor: ROUTER_FORROOT_GUARD
23:03:28.908 core.js:804 Jerry in InjectionToken Constructor: Router Initializer
23:03:28.910 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Root Guard
23:03:28.910 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Initial State
23:03:28.910 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Initial State
23:03:28.910 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Reducer Factory
23:03:28.910 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Reducer Factory Provider
23:03:28.911 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Initial Reducers
23:03:28.911 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Initial Reducers
23:03:28.911 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Store Features
23:03:28.911 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Store Reducers
23:03:28.912 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Feature Reducers
23:03:28.912 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Feature Configs
23:03:28.912 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Store Features
23:03:28.912 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Feature Reducers Token
23:03:28.912 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Feature Reducers
23:03:28.912 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store User Provided Meta Reducers
23:03:28.913 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Meta Reducers
23:03:28.913 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Resolved Meta Reducers
23:03:28.913 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store User Runtime Checks Config
23:03:28.913 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal User Runtime Checks Config
23:03:28.913 core.js:804 Jerry in InjectionToken Constructor: @ngrx/store Internal Runtime Checks
