fix(ui): prevent streaming text flicker and first-chunk loss

2026-05-03 02:32:05 +03:00
parent 4ad5d2f4b7
commit f810a3316c
2 changed files with 13 additions and 9 deletions
@@ -314,9 +314,13 @@ export function createEventPipeline(input: EventPipelineInput) {
        } else {
          d.queue[i] = normalizedPayload
          if (normalizedPayload.type === "message.part.updated") {
-            const part = (normalizedPayload.properties as { part: { messageID: string; id: string } }).part
-            d.staleDeltas.add(deltaKey(part.messageID, part.id, "text"))
-            d.staleDeltas.add(deltaKey(part.messageID, part.id, "output"))
+            const part = (normalizedPayload.properties as { part: Record<string, unknown> & { messageID: string; id: string } }).part
+            for (const field of ["text", "output"] as const) {
+              const value = part[field]
+              if (typeof value === "string" && value.length > 0) {
+                d.staleDeltas.add(deltaKey(part.messageID, part.id, field))
+              }
+            }
          }
        }
        syncDebug.pipeline.coalesced(normalizedPayload.type, k)