NestJS · Junior · Question 30 of 75

What does `@Param('id', ParseIntPipe) id: number` do with `/users/abc`?

1Passes the string abc
✓Correct answer: Responds with 400 Bad Request because abc isn't an integer
3Passes NaN to the handler

Explanation

For valid input the pipe converts the string to a number, so the handler gets the right type.

Further reading

NestJS: Pipes ↗

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