[fitchmultz]

Fixes #128.

When a subschema only produces annotations, such as deprecated, the branch checks count it as a failure. As a result, oneOf rejects valid data, if falls through to else, and not accepts data it should reject.

These checks now treat a branch as passing when everything it returns is an annotation (isJsonAnnotation), instead of expecting an empty result. A pending async result still counts as a non-match, same as before. That covers:

• oneOf and anyOf validation and reduction
• the oneOf declarator and fuzzy matching
• if and not
• contains and propertyNames
• the unevaluated checks

Annotation handling is otherwise unchanged.

Tests are in src/tests/issues/issue128.branch-annotations.test.ts. The JSON pointer escaping that used to be in this PR is now in #131.

AI disclosure: This pull request was prepared with AI assistance and reviewed by me.

[sagold]

Hi Mitch,

thank you so much for your contribution!

I will review and integrate your MR next. It might take some time though as I have not much to spare and there a lot of changes.

Best,
Sascha