NestJS Validation Pipes: Which is recommended - using @UsePipes(ValidationPipe) or @UsePipes(new ValidationPipe())?

While going through NestJS tutorials, I came across two different syntaxes for the UsePipes Decorator:

@UsePipes(ValidationPipe) 
@UsePipes(new ValidationPipe())

Based on my understanding, ValidationPipe is a standalone class, and when using new ValidationPipe(), it simply creates a new instance of the ValidationPipe class.

So, which option should I go with? What sets them apart? Are there any specific scenarios where one is more suitable than the other?

Answer №1

Both functions are functioning properly in their current states. However, if there is a need to provide additional options to the pipe, it is recommended to utilize the new ValidationPipe() method. This ensures that Nest recognizes the pipe as an instance rather than just a class reference, resulting in the creation of the appropriate instance for usage.

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