Runtime: warn when an expression doesn't return state

[doc-han]

Short Description

This PR

1. warns when an operation doesn't return a state. Warning happens when an operation realizes that the one before it didn't return state. runtime: crash occurs if an expression doesn't return state #737

Fixes #737 #761

Implementation Details

when an operation fails to return state.

Before

Operation	Result
the following operations just fail without us knowing why

After

Operation	Result
we warn that the previous operation didn't return a state & might cause the current to fail

QA Notes

List any considerations/cases/advice for testing/QA here.

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[doc-han]

yet to add some additional tests!

[josephjclark]

This is fantastic @doc-han, thank you so much! It's a really good, clean PR and you've done all the right things.

Having had a little play with this and the output, I'm having some thoughts about the structure.

At the end of an operation, if no state was returned, let's always logger.debug(warning: operation ${name} did not return state`). That gives us a nice log in-context, and because it's debug level we can easily hide it.

So the output will be like:

[R/T] ❯ Starting operation 1
[R/T] ❯ Warning: operation 1 did not return state
[R/T] ❯ Operation 1 complete in 0ms

Plus there are some other comments

[doc-han]

I think most of our user errors will be reduced extremely when they have development time help(proper static & semantic validations)

[josephjclark]

See comment!

[josephjclark]

Fantastic @doc-han , thanks

One little tweak please, then can I ask you to run pnpm changeset and generate a runtime patch log?

Then I can get this merged and released tomorrow 🎉

[josephjclark]

Thanks! I'll do a final check and release in the morning 🚀