Add topic publishing sidebar

events/Events.ts

@@ -23,7 +23,7 @@ export function makeConnectionStateEvent(connectionId: string): Event<DataSource
   }
 }
 
-interface Message {
+export interface Message {
   topic: string,
   payload: any
 }
@@ -33,3 +33,9 @@ export function makeConnectionMessageEvent(connectionId: string): Event<Message>
     topic: `conn/${connectionId}`,
   }
 }
+
+export function makePublishEvent(connectionId: string): Event<Message> {
+  return {
+    topic: `conn/publish/${connectionId}`,
+  }
+}