Whilst it's not as expressive/flexible as typespec, and in my experience it's not always well supported by tooling, you can do $ref's across files in openapi sp

Whilst it's not as expressive/flexible as typespec, and in my experience it's not always well supported by tooling, you can do $ref's across files in openapi specifications. Eg: https://github.com/mnahkies/openapi-code-generator/blob/main/integration-tests-definitions%2Ftodo-lists.yaml#L43-L46 https://github.com/mnahkies/openapi-code-generator/blob/main...