[Solved] Which syntax correctly defines a Resolver service in Angular? — Ans: export class DataResolver implements Resolve { resolve(route:... | Angular

Angular - Advanced Patterns

Which syntax correctly defines a Resolver service in Angular?

Aexport class DataResolver implements Resolve { resolve(): Data { return this.service.getData(); } }

Bexport class DataResolver { fetch(route: ActivatedRouteSnapshot): Data { return this.service.getData(); } }

C

export class DataResolver implements Resolve<Data> { resolve(route: ActivatedRouteSnapshot): Observable<Data> { return this.service.getData(); } }

D

export class DataResolver implements Resolve<Data> { getData(route: ActivatedRouteSnapshot): Data { return this.service.getData(); } }

Step-by-Step Solution

Solution:

Step 1: Check Resolver interface implementation
The Resolver must implement Resolve and define a resolve method with route parameter returning Observable or Promise.
Step 2: Validate method signature
export class DataResolver implements Resolve { resolve(route: ActivatedRouteSnapshot): Observable { return this.service.getData(); } } correctly implements Resolve with resolve(route: ActivatedRouteSnapshot): Observable. Others miss interface, method name, or return type.
Final Answer:
export class DataResolver implements Resolve { resolve(route: ActivatedRouteSnapshot): Observable { return this.service.getData(); } } -> Option C
Quick Check:
Resolver syntax = implements Resolve + resolve() [OK]

Quick Trick: Resolver must implement Resolve and have resolve(route) method [OK]

Common Mistakes:

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Which syntax correctly defines a Resolver service in Angular?