A type guard for vals that expect a WebApi Request as the first parameter. Since a val can be invoked by run, web, express or even email, the correct type for a web endpoint should be req?: Request | unknown . By using this type guard and handling the false case, all later code can safely access the request: export const myVal = (req?: Request | unknown) => {
if (!@karfau.isRequest(req)) {
return `This val has to be used with the web endpoint, see ${@neverstew.thisValUrl()}`;
}
if (req.method === 'GET') {
// ...
}
}
