[Solved] Identify the error in this service declaration: @Injectable({ providedIn: root }) export class LoggerService {} | Angular

Angular - Services and Dependency Injection

Identify the error in this service declaration:

 @Injectable({
   providedIn: root
 })
 export class LoggerService {}

AIncorrect decorator name, should be @InjectableService

BService class must have a constructor

CMissing quotes around 'root' in providedIn

DprovidedIn cannot be used in @Injectable

Step-by-Step Solution

Solution:

Step 1: Check syntax of providedIn value
The value 'root' must be a string, so it needs quotes: 'root'. Without quotes, it's treated as an undefined variable.
Step 2: Verify other parts
The decorator name @Injectable is correct, constructor is optional, and providedIn is valid here.
Final Answer:
Missing quotes around 'root' in providedIn -> Option C
Quick Check:
String values need quotes in providedIn [OK]

Quick Trick: Always put quotes around string values in decorators [OK]

Common Mistakes:

MISTAKES

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