Describe the solution

I'm not sure where exactly the source of worker-configuration.d.ts types is - the wrangler package seems to get its types from miniflare but haven't dug into how that works. But manually making this change to my worker-configuration.d.ts means I can cmd-click into RPC classes:

Before (cmd-click on the rpc method in cursor/vscode does nothing):

After (cmd-click goes to the rpc method implementation):

I believe when you mess with the key types in a mapped object typescript just gives up on tracking where the original property comes from.

I'd be happy to open a PR if someone can point me to wherever the source of truth for this generated code is.