From 8285a18f1850428bb4503bfa6ee09e3044eb3a7b Mon Sep 17 00:00:00 2001
From: "opencode-agent[bot]"
 <219766164+opencode-agent[bot]@users.noreply.github.com>
Date: Fri, 31 Jul 2026 20:32:35 -0400
Subject: [PATCH] refactor(tui): remove unused revert diff parser (#39963)

Co-authored-by: Kit Langton <kit.langton@gmail.com>
---
 bun.lock                                   |  1 -
 packages/tui/package.json                  |  1 -
 packages/tui/src/util/revert-diff.ts       | 18 -----------
 packages/tui/test/util/revert-diff.test.ts | 35 ----------------------
 4 files changed, 55 deletions(-)
 delete mode 100644 packages/tui/src/util/revert-diff.ts
 delete mode 100644 packages/tui/test/util/revert-diff.test.ts

diff --git a/bun.lock b/bun.lock
index b6277f3b650..215c55c66c7 100644
--- a/bun.lock
+++ b/bun.lock
@@ -88,7 +88,6 @@
         "@tanstack/solid-query": "5.91.4",
         "@tanstack/solid-virtual": "catalog:",
         "@thisbeyond/solid-dnd": "0.7.5",
-        "diff": "catalog:",
         "effect": "catalog:",
         "fuzzysort": "catalog:",
         "ghostty-web": "github:anomalyco/ghostty-web#83c0a07b8628b748aed073b232cb4b52a6ca11c1",
diff --git a/packages/tui/package.json b/packages/tui/package.json
index 5fa63c5a76c..215bd69a89b 100644
--- a/packages/tui/package.json
+++ b/packages/tui/package.json
@@ -93,7 +93,6 @@
     "@opentui/solid": "catalog:",
     "@solid-primitives/event-bus": "1.1.2",
     "clipboardy": "4.0.0",
-    "diff": "catalog:",
     "effect": "catalog:",
     "fuzzysort": "catalog:",
     "get-east-asian-width": "catalog:",
diff --git a/packages/tui/src/util/revert-diff.ts b/packages/tui/src/util/revert-diff.ts
deleted file mode 100644
index 6ee1737f0b8..00000000000
--- a/packages/tui/src/util/revert-diff.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import { parsePatch } from "diff"
-
-export function getRevertDiffFiles(diffText: string) {
-  if (!diffText) return []
-
-  try {
-    return parsePatch(diffText).map((patch) => {
-      const filename = [patch.newFileName, patch.oldFileName].find((item) => item && item !== "/dev/null") ?? "unknown"
-      return {
-        filename: filename.replace(/^[ab]\//, ""),
-        additions: patch.hunks.reduce((sum, hunk) => sum + hunk.lines.filter((line) => line.startsWith("+")).length, 0),
-        deletions: patch.hunks.reduce((sum, hunk) => sum + hunk.lines.filter((line) => line.startsWith("-")).length, 0),
-      }
-    })
-  } catch {
-    return []
-  }
-}
diff --git a/packages/tui/test/util/revert-diff.test.ts b/packages/tui/test/util/revert-diff.test.ts
deleted file mode 100644
index fc4794e242d..00000000000
--- a/packages/tui/test/util/revert-diff.test.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import { getRevertDiffFiles } from "../../src/util/revert-diff"
-
-describe("revert diff", () => {
-  test("prefers the actual file path over /dev/null for added and deleted files", () => {
-    const files = getRevertDiffFiles(`diff --git a/new.txt b/new.txt
-new file mode 100644
-index 0000000..3b18e51
---- /dev/null
-+++ b/new.txt
-@@ -0,0 +1 @@
-+new content
-diff --git a/old.txt b/old.txt
-deleted file mode 100644
-index 3b18e51..0000000
---- a/old.txt
-+++ /dev/null
-@@ -1 +0,0 @@
--old content
-`)
-
-    expect(files).toEqual([
-      {
-        filename: "new.txt",
-        additions: 1,
-        deletions: 0,
-      },
-      {
-        filename: "old.txt",
-        additions: 0,
-        deletions: 1,
-      },
-    ])
-  })
-})