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This PR makes it possible to call
toPlainMessage
on aPlainMessage<T>
object as well as aMessage<T>
instance.The motivation for this change is the lack of exact types in TypeScript. Specifically, if I define a function that accepts a
PlainMessage<T>
as an argument, it's valid to pass aMessage<T>
instance as well, because it has all the properties necessary to satisfy thePlainMessage<T>
interface.If I need to ensure that I actually have a
PlainMessage<T>
inside the function (e.g. for the reasons described in connectrpc/connect-es#505), at the moment I have to type the parameter asT | PlainMessage<T>
, and check withinstanceof Message
before callingtoPlainMessage
.