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Re:Show HN: Mini social network that I made as my first MERN... by hombre_fatal on Saturday March 07, 2020 @07:37PM (#22515368)
Instead of just validating the extension of the user-uploaded image, you can also determine the image type by looking at the first two bytes of the file.

https://github.com/sdsykes/fastimage/blob/bad902712c146d9fc8...

It's also nice to move those database calls into a db.js module. That way you can reuse them. And it cleans up the route handlers to just business logic.

I didn't read enough code to have any more advice.

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