From cbff4fa5bcc51e7e740fac5174fc382e6bbe1c1a Mon Sep 17 00:00:00 2001
From: Vincent Koc <vincentkoc@ieee.org>
Date: Sat, 20 Jun 2026 02:22:31 +0800
Subject: [PATCH] refactor(extensions): drop unused internal type aliases

---
 extensions/browser/src/browser/cdp.ts  | 19 -------------------
 extensions/diffs/src/language-hints.ts |  1 -
 2 files changed, 20 deletions(-)

diff --git a/extensions/browser/src/browser/cdp.ts b/extensions/browser/src/browser/cdp.ts
index d7d809d89637..796b611225f0 100644
--- a/extensions/browser/src/browser/cdp.ts
+++ b/extensions/browser/src/browser/cdp.ts
@@ -299,25 +299,6 @@ async function prepareCdpPageSession(send: CdpSendFn, sessionId?: string): Promi
   await send("Runtime.runIfWaitingForDebugger", undefined, sessionId).catch(() => {});
 }
 
-/** Runtime.evaluate remote-object subset used by CDP helpers. */
-export type CdpRemoteObject = {
-  type: string;
-  subtype?: string;
-  value?: unknown;
-  description?: string;
-  unserializableValue?: string;
-  preview?: unknown;
-};
-
-/** Exception details surfaced from CDP Runtime.evaluate. */
-export type CdpExceptionDetails = {
-  text?: string;
-  lineNumber?: number;
-  columnNumber?: number;
-  exception?: CdpRemoteObject;
-  stackTrace?: unknown;
-};
-
 /** Normalized accessibility tree node returned by ARIA snapshots. */
 export type AriaSnapshotNode = {
   ref: string;
diff --git a/extensions/diffs/src/language-hints.ts b/extensions/diffs/src/language-hints.ts
index 47052f17479a..05bd7676af49 100644
--- a/extensions/diffs/src/language-hints.ts
+++ b/extensions/diffs/src/language-hints.ts
@@ -13,7 +13,6 @@ export const BASE_DIFF_VIEWER_LANGUAGE_HINTS = [
   "text",
   "ansi",
 ] as const satisfies readonly SupportedLanguages[];
-export type DiffViewerBaseLanguage = (typeof BASE_DIFF_VIEWER_LANGUAGE_HINTS)[number];
 
 const BASE_LANGUAGE_HINTS = new Set<SupportedLanguages>(BASE_DIFF_VIEWER_LANGUAGE_HINTS);
 const BASE_LANGUAGE_ALIASES = new Map<string, SupportedLanguages>(