add multiroom

src/server.ts

@@ -98,7 +98,7 @@ fastify.register(async function (fastify: Fastify) {
               changes: update.changes.toJSON(),
             })),
           );
-        } else if (data.type == "getDocument") {
+        } else if (data.type === "getDocument") {
           send(socket, requestId, { version: room.updates.length, doc: room.doc.toString() });
         }
       });