XState famously always conformed to the SCXML spec[0]. It isn't mentioned anymore in the current version anywhere(?), but you can still see it in the v4 docs[1]

XState famously always conformed to the SCXML spec[0]. It isn't mentioned anymore in the current version anywhere(?), but you can still see it in the v4 docs[1]. [0]: https://www.w3.org/TR/scxml/ https://www.w3.org/TR/scxml/ [1]: https://stately.ai/docs/xstate-v4/xstate/advanced/scxml https://stately.ai/docs/xstate-v4/xstate/advanced/scxml