NestJS - Pipes
Which interface must a custom pipe class implement in NestJS?
Which interface must a custom pipe class implement in NestJS?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall NestJS pipe interface
Custom pipes must implement the PipeTransform interface to define transform logic.Step 2: Differentiate from other interfaces
CanActivate is for guards, ExceptionFilter for error handling, MiddlewareConsumer for middleware setup.Final Answer:
PipeTransform -> Option AQuick Check:
Custom pipe interface = PipeTransform [OK]
Quick Trick: Custom pipes always implement PipeTransform interface [OK]
Common Mistakes:
- Using CanActivate instead of PipeTransform
- Confusing with ExceptionFilter
- Not implementing any interface
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