NestJS · Junior · Question 39 of 75

What is the job of a guard?

1Retry failed database queries
✓Correct answer: Decide whether a request may reach the handler, typically for authentication or roles
3Format the response

Explanation

A guard implements canActivate() and returns true or false (or throws). Returning false gives 403 Forbidden by default.

Further reading

NestJS: Guards ↗

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