From 4b9c1851d6062b1b7ee64657abe7817aec4742bd Mon Sep 17 00:00:00 2001
From: Chris Farhood <chris@farhood.org>
Date: Sun, 12 Apr 2026 09:27:51 -0400
Subject: [PATCH] Parse JSONL events in ui-parser for cleaner output

Skip step_start/step_finish/tool_use events in UI display, extract
text from type:text events. Provides cleaner real-time output.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/ui-parser.ts | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/ui-parser.ts b/src/ui-parser.ts
index 28b5859..3d8e749 100644
--- a/src/ui-parser.ts
+++ b/src/ui-parser.ts
@@ -9,5 +9,26 @@ type TranscriptEntry =
   | { kind: "system"; ts: string; text: string };
 
 export function parseStdoutLine(line: string, ts: string): TranscriptEntry[] {
-  return [{ kind: "stdout", ts, text: line }];
+  const trimmed = line.trim();
+  if (!trimmed) return [];
+
+  // Try to parse as JSONL event from opencode run --format json
+  try {
+    const event = JSON.parse(trimmed);
+    const type = typeof event.type === "string" ? event.type : "";
+    const part = typeof event.part === "object" && event.part !== null ? event.part : {};
+
+    if (type === "text" && typeof part.text === "string" && part.text.trim()) {
+      return [{ kind: "stdout", ts, text: part.text.trim() }];
+    }
+
+    // Skip non-display event types
+    if (type === "step_start" || type === "step_finish" || type === "tool_use") {
+      return [];
+    }
+  } catch {
+    // Not JSON — treat as raw stdout
+  }
+
+  return [{ kind: "stdout", ts, text: trimmed }];
 }