How to get automatic IntelliSense for name in sendToContentScript like sendToBackground?

[MiniSuperDev]

For example there you can use any name.

https://github.com/PlasmoHQ/examples/blob/a421f1a93eab51808a45f97eff498a72f817fae5/with-messaging/popup.tsx#L40-L43

          const csResponse = await sendToContentScript({
            name: "query-selector-text",
            body: selector
          })

But in sendToBackground you get automatic IntelliSense
https://github.com/PlasmoHQ/examples/blob/a421f1a93eab51808a45f97eff498a72f817fae5/with-messaging/popup.tsx#L22-L27

          const resp = await sendToBackground({
           name: "hash-tx",
           body: {
             input: txInput
           }
         })

And if you can also please show me an example of how the types should be defined to handle those messages in a better way, and have autocompletion in both the name and the body.

Thank you