Discussion: Exit criteria for bringing http2 out of experimental #19453

It's time to start figuring out what are the final steps necessary to bring http2 out of experimental?

Let's build a list.

• Expectation + evidence of API stability (e.g. list of user-space modules/applications building on top of http2)
  • http2.live
  • fastify
  • grpc
  • ...?
• Modules in citgm that exercise the http2 API
  • fastify
• Reports of http2 deployed in production
  • http2.live
• Framework adoption
  • fastify
  • restify
• full (or at least fuller) test coverage

/cc @nodejs/http2 @nodejs/tsc

EDITED BY TROTT: added test coverage. I took the "let's build a list" as an invitation to edit. Feel free to undo my edit if I'm misunderstood.
EDITED BY OFROBOTS: edited 'citgm' bullet to complete as fastify has been added.