A reimplementation of jq in golang supports reading yaml and, of course, emits json: https://github.com/itchyny/gojq#:~:text=supports%20reading%2...

That one is likely more relevant than yq since folks in the json ecosystem are far more likely to be familiar with jq's syntax and thus using gojq is "one stop shopping," not to mention that its error handling is light-years beyond jqlang's copy