fix: handle boolean schemas in OpenAPI 3.1 specifications#76
Merged
tim-smart merged 3 commits intotim-smart:mainfrom Feb 18, 2026
Merged
fix: handle boolean schemas in OpenAPI 3.1 specifications#76tim-smart merged 3 commits intotim-smart:mainfrom
tim-smart merged 3 commits intotim-smart:mainfrom
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OpenAPI 3.1 adopted JSON Schema 2020-12, which allows boolean schemas. This fix properly handles `"items": false` (no additional items) and `"items": true` (any additional items) in array/tuple validation. Changes: - Add type guards in cleanupSchema() to handle boolean values - Add early returns in addRefs() for non-object schemas - Add guards in toSource() to handle boolean schemas - Implement onUnknown() transformer method for true schemas - Update itemsSchema() to handle boolean values - Add test fixtures for boolean schema validation Fixes tim-smart#75 Generated with [Claude Code](https://claude.ai/code) via [Happy](https://happy.engineering) Co-Authored-By: Claude <noreply@anthropic.com> Co-Authored-By: Happy <yesreply@happy.engineering>
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Friendly bump :) |
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Summary
This PR fixes a bug where the generator crashes on valid OpenAPI 3.1 specifications that use boolean schemas (
"items": falseor"items": true).Fixes #75
Problem
OpenAPI 3.1 adopted JSON Schema 2020-12, which allows boolean schemas. When defining strict tuples:
"items": falsemeans no additional items beyondprefixItemsare allowed"items": truemeans any additional items are allowedThe generator was crashing with:
Solution
Added proper handling for boolean schemas throughout the codebase:
cleanupSchema()- Check if schema is boolean/object before property accessaddRefs()- Skip processing for non-object schemastoSource()- Convert true to Unknown, false returns noneitemsSchema()- Handle boolean values for itemsonUnknown()transformer - Generate proper types fortrueschemasTesting
Test Fixtures Added
Created
test-fixtures/boolean-schema-test.jsonwith test cases for:"items": false"items": trueMinimal Reproduction
Repository with minimal repro: https://github.com/schickling-repros/openapi-gen-boolean-schema-bug
Before fix:
npx @tim-smart/openapi-gen -s minimal-repro.json -n TestClient # TypeError: Cannot use 'in' operator to search for 'type' in falseAfter fix:
npx @tim-smart/openapi-gen -s minimal-repro.json -n TestClient # ✅ Successfully generates client code