openapi_types

feat: Added lightweight validation API with OpenApiValidator and validateMap() for pre-parse checks.

feat: Added mixed-version diagnostics for OpenAPI 3.0 vs 3.1-only fields (webhooks, jsonSchemaDialect, components.pathItems, etc.).

feat: Added parameter style serialization helper for OpenAPI v3 (form, simple, matrix, label, spaceDelimited, pipeDelimited, deepObject).

feat: Added OpenAPI 3.0 callbacks support to OperationObjectV3 (parse, model, serialize).

fix: Preserved vendor extensions (x-*) across more objects (InfoObject, SchemaObjectV3, ResponseObjectV3, MediaTypeObjectV3, RequestBodyV3, and related parsing paths).

fix: OpenAPI parser version detection is now strict for supported versions (2.0, 3.0.x, 3.1.x).

fix: OperationObjectV3.fromMap now supports default responses correctly.

fix: LinkObjectV3.parameters now accepts runtime expressions and literal JSON values without schema coercion.

fix: MediaTypeObjectV3 now supports singular example in addition to examples.

fix: SchemaObjectV3 now preserves id and $schema fields.

fix: Added Swagger/OpenAPI 2.0 array parameter support (items, collectionFormat) in ParameterObjectV2.

fix: Relaxed discriminator mapping typing to avoid overly strict string-only casting.

compliance: Added OpenAPI 3.1 type array support in SchemaObjectV31 and wired ComponentsObjectV31 schema parsing to use SchemaObjectV31.

compliance: Added OpenAPI 3.1 version validation in DocumentV31.

compliance: Enforced parameter schema vs content mutual exclusivity in v3 parameter base model.

breaking: OperationObjectV3.responses is now required (non-null).

breaking: ResponseObjectV3.description is now required (non-null).

breaking: RequestBodyV3.content is now required (non-null).

breaking: OAuth2SecuritySchemeV3.flows now uses a map keyed by flow name; a compatibility getter (flowList) is provided.