Angular - Services and Dependency Injection
Which of these is a valid way to provide a service only in a specific Angular module using
@Injectable?Which of these is a valid way to provide a service only in a specific Angular module using @Injectable?
easy🧠 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall how to scope service to a module
Angular allows providing a service in a specific module by passing the module class to providedIn.Step 2: Identify correct syntax
Using providedIn: SomeModule (the module class) scopes the service to that module only.Final Answer:
Use providedIn: SomeModule where SomeModule is the module class. -> Option AQuick Check:
Module class in providedIn = module-scoped service [OK]
Quick Trick: Use module class in providedIn to limit service scope [OK]
Common Mistakes:
MISTAKES- Using 'root' provides app-wide, not module-only
- Using 'any' provides a new instance per injector
- Confusing 'platform' with module scope
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