CodeAction previews don't work on "Source" actions

[DanTup]

CodeActions on the lightbulb menu can be previewed with Ctrl+Enter:

However this isn't the case for "Source" CodeActions:

[DanTup]

Reading #192238, I wonder if the difference here is actually Command vs inline edits?

If so, should extensions be computing all of their edits in resolve instead? It seems like this could cause lots of additional computation (because of #201871)

[mjbvz]

@justschen I updated JS/TS's organize imports to use resolveCodeAction but still don't see this working

[justschen]

@mjbvz hmmm i'll do some investigation - i might have a condition or have hooked it up to only quick fix items

[justschen]

@DanTup so this is actually related to an issue I'm working on ATM - it's not that preview doesn't work, the label just won't show that you can preview.

if you try doing shift + enter while selecting that source action, you will still be able to see the previews come thru

the previous fix was related to the issue you mentioned (calling resolve to determine if there are edits prior to showing the label for previewing, but I reverted). to avoid the multiple calls to resolve, we could statically determine wheterh code actions would have available previews or not (based on the type of code action), which is something I changed recently, but may have to get more code action cases.