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Latest commit: 89e7c70

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Follow-up

After opening the PR, I tested the package with a generator that always supplies a custom transform callback. Even though the callback only converts binary schemas to Blob, its presence disabled the original required-only allOf translation for the entire document.

Commit f82b194c adds transform-aware handling. It preserves callback order and replacement behavior, then applies untouched typed object constraints to the completed allOf intersection through WithRequiredObject<T, K>. Referenced components still use their final transformed types; if a callback removes a required property, that property remains required as unknown instead of producing invalid TypeScript.

This keeps transformed output concise:

WithRequiredObject<CompanyResource, "organization" | "addresses" | "processingTypes">

The implementation deliberately keeps WithRequired unchanged because parent-level required and an explicit type: object constraint have different semantics. Callback replacements of the required-only member remain authoritative, and helper-name conflicts use an equivalent anonymous fallback.

The first transform-aware version was much larger than necessary. Commit 89e7c703 keeps the same behavior while:

• sharing one canonical AST between the named helper and collision fallback;
• consolidating repeated callback and compiler-test infrastructure;
• replacing one-off tests with focused behavior matrices;
• retaining coverage for recursion, unsafe schemas, callback lifecycle, replacements, discriminators, collisions, and generated TypeScript semantics.

That reduced the PR from 2,890 additions to 1,436 additions without dropping supported behavior.

The final suite passes with 306 tests. TypeScript checks, generated examples, build and package exports, the DigitalOcean fixture, live schema generation, and a freshly packed consumer all pass. The live callback-enabled schema produces three concise helper references, no Record<string, never> intersections, and no TypeScript diagnostics.

Notes

The follow-up commit has been done entirely by GPT-5.6 Sol.