fix: declare variables which should not be managed by inline-snapshot

[15r10nk]

things which can be changed with the next inline-snapshot version to make clear who is responsible for the source code (inline-snapshot or the developer).

[alexmojaki]

I don't understand this. What's the difference between Is(foo) and foo when foo is a variable name?

[15r10nk]

@alexmojaki, you are fast 😄.

I published this to show what I'm currently working on 15r10nk/inline-snapshot#123.

This makes only sense if you know that Is(...) will be a part of the next inline-snapshot version which allows the developer to take back control and to change code inside snapshots.

This makes it explicit who controls the source code and inline-snapshot will no longer try to change you code back with "update".

The value inside Is(...) can also change if the snapshot is evaluated multiple times and allow some constructs which are not possible today.

[samuelcolvin]

thanks, personally I think this looks good, but @alexmojaki and @Kludex mostly maintain this repo, so it's up to them.