Generators

Generators, or preset's are the core of The Codegen Project, that determines what is generated for your project.

Each language and inputs have specific generators;

payloadsTyped payload and message models that serialize straight into your wire format.parametersParameter models that interpolate values into subjects, topics and URL paths.headersMessage header models, with optional runtime validation of what arrives.typesType aliases and enums derived from the constraints already in your document.channelsProtocol-specific publish, subscribe, request and reply functions per operation.clientOne class wrapping the channel functions, with connection handling built in.modelsPlain typed models via Modelina, with none of the messaging machinery.customYour own render function, fed the parsed document and other generators’ output.

Inputs	payloads	parameters	headers	types	channels	client	models	custom
AsyncAPI	✅	✅	✅	✅	✅	✅	✅	✅
OpenAPI	✅	✅	✅	✅	✅	✅	✅	✅
JSON Schema	❌	❌	❌	❌	❌	❌	✅	✅

OpenAPI channels and client generate an HTTP client — see the openapi-http-client example. OpenAPI channels can also generate the server side with the http_server protocol — see the openapi-http-server example.

Languages	payloads	parameters	headers	types	channels	client	models	custom
TypeScript	✅	✅	✅	✅	✅	✅	✅	✅