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**PR Title** Restrict null/NaN precheck to extension tags ## Summary - Updated null/NaN precheck to inspect only top-level `ext:*` extension properties. - Left schema-owned tags to normal schema validation. - Continued rejecting actual JSON `null` and numeric `NaN` inside `ext:*`, including nested extension values. - Allowed string values like `"null"` and `"nan"` to pass the precheck. - Updated tests, README, changelog, and bumped package version to `0.4.2`. **Validation** - `.venv/bin/python -m unittest discover tests/unit_tests` passed: `166 tests`
Restrict null/NaN precheck to extension tags
shweta2101
approved these changes
May 30, 2026
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Summary
ext:*extension properties.nulland numericNaNinsideext:*, including nested extension values."null"and"nan"to pass the precheck.0.4.2.Validation
.venv/bin/python -m unittest discover tests/unit_testspassed:166 tests