Check Data at Runtime
TypeScript in Production notes about Check Data at Runtime
Model a TypeScript API Contract: Requests, Responses, and the Network Boundary
Define one user-update contract for a handler and client, then check actual request and response data before trusting its types.
What TypeScript Checks Before Production—and What It Leaves to Runtime
TypeScript catches certain mismatches before code runs, but its types disappear from the JavaScript that handles real inputs.
