Vũ Văn Dũng f47c409174 Check for type of route handler returned value at build time (via the TS plugin) and at runtime (#51394) ... ### What? Fixes #51130. Before this PR, the package assumes that route handlers return a `Response` which is not necessarily the case. The linked issue specified three suggestions to resolve this 1. Return a default 200 response 2. Throw a better error message 3. or both ~~In this issue I implemented (3), except that it is a warning and not an error. Do tell if the team wants to follow a different approach, as it is not too hard to change this.~~ This PR implements (2). ### How? The returned value of the handler is checked at runtime to ensure it is actually a `Response` instance. The return type `AppRouteHandlerFn` is also modified to `unknown` to avoid similar assumptions elsewhere. The TS plugin is also modified to check for the return type during build time. Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>		2023-09-08 03:26:53 +00:00
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route.ts	Check for type of route handler returned value at build time (via the TS plugin) and at runtime (#51394)	2023-09-08 03:26:53 +00:00