feat(frontend): XState statecharts

Expressing logic in statecharts for complex stateful behaviours should
improve maintainability

We use @xstate/cli to statically analyze statcharts before typechecking

1 files changed, 8 insertions, 0 deletions

diff --git a/subprojects/frontend/src/xtext/xtextMessages.ts b/subprojects/frontend/src/xtext/xtextMessages.ts
index c4d0c676..ec7a2a31 100644
--- a/subprojects/frontend/src/xtext/xtextMessages.ts
+++ b/subprojects/frontend/src/xtext/xtextMessages.ts
@@ -40,3 +40,11 @@ export const XtextWebPushMessage = z.object({
 });
 
 export type XtextWebPushMessage = z.infer<typeof XtextWebPushMessage>;
+
+export const XtextResponse = z.union([
+  XtextWebOkResponse,
+  XtextWebErrorResponse,
+  XtextWebPushMessage,
+]);
+
+export type XtextResponse = z.infer<typeof XtextResponse>;