TypeScript Does Not Protect Your API: Request Bodies Are Lies Until You Validate Them
You write a clean endpoint. The body is typed. The editor is happy. No red squiggles anywhere. type CreateUser = { name : string ; email : string ; age : number }; export async function POST ( req : Request ) { const body = ( await req . json ()) as CreateUser ; await User . create ( body ); return…
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- 2026-11-08 08:51 · DEV Community — AI
TypeScript Does Not Protect Your API: Request Bodies Are Lies Until You Validate Them