We used a forked version of https://github.com/readmeio/oas https://github.com/readmeio/oas to help dereference `$ref` statements, but other than that this is e

We used a forked version of https://github.com/readmeio/oas https://github.com/readmeio/oas to help dereference `$ref` statements, but other than that this is entirely hand-written: The Typescript `factory` AST API + `prettier` for formatting.