[fitchmultz]

Property names that match Object.prototype members aren't treated as plain names:

• data keys like toString or constructor can crash validation (node.validators is not iterable)
• the same keys can get past additionalProperties: false and dependentRequired
• a declared __proto__ property can disappear when schemas are merged

Names containing / or ~ also produce wrong pointers. For example, { "a/b": 1 } is reported at #/a/b.

Lookups now go through own properties (getValue/hasProperty). The dictionaries that hold property names are created with Object.create(null). Pointer escaping lives in two helpers:

• iterateProperties gives each schema property its pointer token
• appendDataPointer builds data pointers

Data pointers stay readable. Only ~ and / are escaped, plus % in # pointers so that getNode reads them back correctly. Errors from getNode now carry data pointers too. The reduce step used to report the schema path (#/properties/choice), and the additionalProperties: false resolver reported just the bare key.

Tests are in src/tests/issues/own-json-properties.test.ts and src/tests/issues/property-pointer-escaping.test.ts.

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

[fitchmultz]

Local verification is complete for 81d9359: 1,067 unit tests and 7,513 spec tests pass, plus the native build and CJS/ESM smoke checks. The upstream CI run is currently action_required with no jobs started; a maintainer needs to approve the fork workflow run.

[sagold]

Hi Mitch, currently last of your PRs. 🙏 Would you mind doing a rebase and resolve the current conflicts?

[sagold]

Rebased your branch and opened a new PR for your changes here #144. Thank you so much for contribution! Highly appreciated!

[fitchmultz]

Thanks, Sascha! I really appreciate you taking care of the rebase and getting these fixes released.

I checked #144 and ran the nine literal-property/pointer regression cases against the published json-schema-library@11.6.16 npm package. All nine pass with both the CommonJS and ESM entry points.

Thanks again for integrating this and the other PRs!

[sagold]

You are welcome. Thank you again and thanks for checking the release!
Great job!