Hey, nice work on openapi-code-generator, its output is very nice. I think you could probably package it up as a TypeSpec emitter without too much difficulty, by emitting OpenAPI and feeding it to your generator. I am doing a similar thing for a Kiota emitter I'm working on. We recently added an API to get the OpenAPI as a JS object which may be of help in this quest:
https://typespec.io/docs/libraries/openapi3/reference/js-api...