NestJS · Junior · Question 61 of 75

How do you handle file uploads in a Nest app on Express?

1Nest can't accept files
2With @Body() only
✓Correct answer: With FileInterceptor('file') (based on Multer) and the @UploadedFile() parameter decorator

Explanation

Validate size and type with ParseFilePipe and validators like MaxFileSizeValidator. Large files are better streamed to object storage.

Further reading

NestJS: File upload ↗

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