From f05f83f65fc4faf0bdc332d6182ef5c872e05251 Mon Sep 17 00:00:00 2001
From: Tom Beckenham <34339192+tombeckenham@users.noreply.github.com>
Date: Mon, 9 Nov 2026 20:18:17 +1100
Subject: [PATCH 1/2] perf(ai-claude-code): mark package side-effect free so
 translateSdkStream tree-shakes

Refs #2032
---
 .changeset/claude-code-side-effects.md | 5 +++++
 packages/ai-claude-code/package.json   | 1 +
 2 files changed, 6 insertions(+)
 create mode 100644 .changeset/claude-code-side-effects.md

diff --git a/.changeset/claude-code-side-effects.md b/.changeset/claude-code-side-effects.md
new file mode 100644
index 0000000000..67c60c9020
--- /dev/null
+++ b/.changeset/claude-code-side-effects.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/ai-claude-code': patch
+---
+
+`@tanstack/ai-claude-code` now sets `"sideEffects": false`. A bundler can drop the sandbox, MCP, and Hono modules when an app imports only `translateSdkStream`.
diff --git a/packages/ai-claude-code/package.json b/packages/ai-claude-code/package.json
index fa5f6e156d..2e4e8e349a 100644
--- a/packages/ai-claude-code/package.json
+++ b/packages/ai-claude-code/package.json
@@ -36,6 +36,7 @@
       "import": "./dist/esm/byok.js"
     }
   },
+  "sideEffects": false,
   "files": [
     "dist",
     "src"

From b3ffde542e1244bd81d0cf29c8aae8c5f629708f Mon Sep 17 00:00:00 2001
From: Tom Beckenham <34339192+tombeckenham@users.noreply.github.com>
Date: Mon, 9 Nov 2026 20:21:46 +1100
Subject: [PATCH 2/2] chore(ai-claude-code): correct changeset wording

---
 .changeset/claude-code-side-effects.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.changeset/claude-code-side-effects.md b/.changeset/claude-code-side-effects.md
index 67c60c9020..5a522f13a4 100644
--- a/.changeset/claude-code-side-effects.md
+++ b/.changeset/claude-code-side-effects.md
@@ -2,4 +2,4 @@
 '@tanstack/ai-claude-code': patch
 ---
 
-`@tanstack/ai-claude-code` now sets `"sideEffects": false`. A bundler can drop the sandbox, MCP, and Hono modules when an app imports only `translateSdkStream`.
+`@tanstack/ai-claude-code` now sets `"sideEffects": false`. When an app imports only `translateSdkStream`, a bundler can drop the unused adapter modules.