feat: fully typed SDK generation for Python and TypeScript - #36
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Replace template-side type mapping with a Rust type-rendering engine (xdk-lib/src/types.rs) so generated SDKs are fully typed wherever the OpenAPI spec defines types. Type engine: - $refs render as schema type names (cycle-safe: never recurses into reference bodies); enums as literal unions / typing.Literal; arrays keep item types; oneOf/anyOf become unions, allOf intersections (TS); nullable (newly parsed) maps to '| null' / Optional - Python identifier safety: keyword fields get a '_' suffix plus Field(alias=...); schema names colliding with typing imports get an X prefix (List -> XList) - example_json builds minimal spec-valid payloads for generated tests TypeScript: - schemas.ts declarations fully rendered in Rust: real interfaces, literal-union enums, typed compositions (was 'any') - typed parameters, request/response models, and Options interfaces Python: - new generated xdk/schemas.py: Pydantic models for every component schema (nested inline objects hoisted into named models, aliases topologically sorted, forward refs resolved at import) - per-tag models alias the schema models; union responses get RootModel wrappers; removes the 'Tweet = Any' alias table, the required-fields- forced-to-str bug, and flattened union handling Generator robustness: - has_request_model / has_json_response flags computed once in Rust and used by every template that imports or references a model, so import and definition conditions cannot drift - output directories cleaned before generation (stale modules from a previous spec no longer break builds) - parameters deduplicated by (name, in) for specs that illegally declare a parameter twice - generated test mocks derive from the response schemas (spec-valid) instead of fabricated placeholder values Verified on staging and prod specs: both SDKs build, type-check, and pass their full test suites; public method names are byte-identical to the previous generator's output for the same spec. specs/ pins the staging spec for reproducible local generation.
santiagomed
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Jul 21, 2026
The fully-typed-codegen PR (#36) accidentally committed the staging spec snapshot. Replace it with the production spec as specs/openapi.json and gitignore environment-specific snapshots so they stay local-only.
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What
Replaces template-side type mapping with a Rust type-rendering engine (
xdk-lib/src/types.rs). Generated SDKs are now fully typed wherever the spec defines types — no moreany/Anyfor refs, enums, arrays, or compositions.TypeScript:
schemas.tsgets real interfaces, literal-union enums, union/intersection compositions; typed params and request/response models throughout.anycount in src: ~1334 → 626 (remaining are spec-free-form objects and the deliberate Options index signature).Python: new generated
xdk/schemas.pywith Pydantic models for all component schemas (nested inline objects hoisted, aliases topo-sorted, forward refs resolved at import). Per-tag models alias these; union responses getRootModelwrappers. Kills theTweet = Anyalias table and the required-fields-forced-to-strbug.Anycount: ~932 → 190.Robustness:
has_request_model/has_json_responseflags computed once in Rust (import/definition conditions can't drift), output dirs cleaned before generation, parameter dedup for non-conforming specs, spec-valid test mocks generated from response schemas,nullableparsed, Python keyword-safe field names.Validation