使用NgRx 8.2管理状态在Angular 8.0应用程序中出现错误。
export interface AppState {
loggedIn: boolean;
userInfo: IPrincipal;
}
export interface State {
state: AppState;
}
export interface IPrincipal {
email: string;
password: string;
}
我编写了一个简单的Login服务,该服务返回所需的信息
动作已定义为
export const login = createAction('[Login Initiatied] Login',
props<{ principal: IPrincipal }>()
);
export const loginSuccess = createAction('[Login Success] Login',
props<{ userProfile: IUserProfile }>()
);
export const loginFailure = createAction('[Login Failure] Login',
props<{ message: any }>()
);
用户个人资料只是具有更多详细信息的另一个界面
export interface IUserProfile {
user: IPrincipal;
first: string;
last: string;
}
当我尝试插入效果时
import * as AppActions from './actions/login.action';
login$ = createEffect(() =>
this.actions$.pipe(
ofType(AppActions.login),
map( action => action.principal),
exhaustMap( (principal: IPrincipal) =>
this.loginService.loginUser(principal.email, principal.password).pipe(
map(userProfile => of( AppActions.loginSuccess({ userProfile }))),
catchError(message => of( AppActions.loginFailure({ message })))
)
)
)
);
我尝试了几件事,但在
login$
的影响下,我遇到了这些错误ERROR in src/app/app.effects.ts(32,3): error TS2322: Type 'Observable<{} | Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">>>' is not assignable to type 'Observable<Action> | ((...args: any[]) => Observable<Action>)'.
Type 'Observable<{} | Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">>>' is not assignable to type 'Observable<Action>'.
Type '{} | Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">>' is not assignable to type 'Action'.
Property 'type' is missing in type '{}' but required in type 'Action'.
ERROR in src/app/app.effects.ts(32,3): error TS2322: Type 'Observable<Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)>' is not assignable to type 'Observable<Action> | ((...args: any[]) => Observable<Action>)'.
Type 'Observable<Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)>' is not assignable to type 'Observable<Action>'.
Type 'Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)' is not assignable to type 'Action'.
Property 'type' is missing in type 'Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">>' but required in type 'Action'.
ERROR in src/app/app.effects.ts(32,3): error TS2322: Type 'Observable<Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)>' is not assignable to type 'Observable<Action> | ((...args: any[]) => Observable<Action>)'.
Type 'Observable<Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)>' is not assignable to type 'Observable<Action>'.
Type 'Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)' is not assignable to type 'Action'.
Property 'type' is missing in type 'Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">>' but required in type 'Action'.
ERROR in src/app/app.effects.ts(32,3): error TS2322: Type 'Observable<Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)>' is not assignable to type 'Observable<Action> | ((...args: any[]) => Observable<Action>)'.
Type 'Observable<Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)>' is not assignable to type 'Observable<Action>'.
Type 'Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">> | ({ message: any; } & TypedAction<"[Login Failure] Login">)' is not assignable to type 'Action'.
Property 'type' is missing in type 'Observable<{ userProfile: IUserProfile; } & TypedAction<"[Login Success] Login">>' but required in type 'Action'.
这很明显我很想念,但只是无法转头看看我错过了什么。
map(userProfile => of( AppActions.loginSuccess({ userProfile })))
假定返回一个“可观察到的动作”,但它抱怨没有。
通过导出较早版本的Action并有效地使用它,我能够使用较早版本的实现成功创建。
最佳答案
您需要从效果中返回一个动作,因此这一行代码
map(userProfile => of( AppActions.loginSuccess({ userProfile })))
您可以更改为
map(userProfile => new AppActions.loginSuccess({ userProfile }))
关于javascript - 发布插件对状态管理的影响,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/57455676/