No clear way to write no-op middleware for responses to client-initiated requests

[RobbyCBennett]

The way isn't the languageClient.onRequest('method_here', handler_here) method, but it's with the middleware object in clientOptions. However, I just want to use the response. I don't want to augment/mutate it. How do I pass along the response unaltered in the middleware handler? This would be a lot easier if I could find some documentation for this library.

[dbaeumer]

If you don't want to alter the result simply return the response from the next() handler.

Something like: https://github.com/microsoft/vscode-eslint/blob/24d2ac45b2fe1b8cc8639038b724ba48610da8e2/client/src/client.ts#L464