From fbe8bcf535b52110bc1cc1030633dc9a418f346a Mon Sep 17 00:00:00 2001
From: Sri Pasumarthi <sripas@google.com>
Date: Tue, 24 Mar 2026 12:59:09 -0700
Subject: [PATCH] fix(build): handle EEXIST errors in cpSync during bundle and
 build on Node.js 25+

---
 scripts/build_package.js      |  5 ++++-
 scripts/copy_bundle_assets.js | 17 +++++++++++++++--
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/scripts/build_package.js b/scripts/build_package.js
index 279e46fa94..74233ac4fb 100644
--- a/scripts/build_package.js
+++ b/scripts/build_package.js
@@ -18,7 +18,7 @@
 // limitations under the License.
 
 import { execSync } from 'node:child_process';
-import { writeFileSync, existsSync, cpSync } from 'node:fs';
+import { writeFileSync, existsSync, cpSync, rmSync } from 'node:fs';
 import { join, basename } from 'node:path';
 
 if (!process.cwd().includes('packages')) {
@@ -48,6 +48,9 @@ if (packageName === 'core') {
   const docsSource = join(process.cwd(), '..', '..', 'docs');
   const docsTarget = join(process.cwd(), 'dist', 'docs');
   if (existsSync(docsSource)) {
+    if (existsSync(docsTarget)) {
+      rmSync(docsTarget, { recursive: true, force: true });
+    }
     cpSync(docsSource, docsTarget, { recursive: true, dereference: true });
     console.log('Copied documentation to dist/docs');
   }
diff --git a/scripts/copy_bundle_assets.js b/scripts/copy_bundle_assets.js
index dea50101ef..27c1dc328f 100644
--- a/scripts/copy_bundle_assets.js
+++ b/scripts/copy_bundle_assets.js
@@ -17,7 +17,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { copyFileSync, existsSync, mkdirSync, cpSync } from 'node:fs';
+import { copyFileSync, existsSync, mkdirSync, cpSync, rmSync } from 'node:fs';
 import { dirname, join, basename } from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { glob } from 'glob';
@@ -58,6 +58,9 @@ console.log(`Copied ${policyFiles.length} policy files to bundle/policies/`);
 const docsSrc = join(root, 'docs');
 const docsDest = join(bundleDir, 'docs');
 if (existsSync(docsSrc)) {
+  if (existsSync(docsDest)) {
+    rmSync(docsDest, { recursive: true, force: true });
+  }
   cpSync(docsSrc, docsDest, { recursive: true, dereference: true });
   console.log('Copied docs to bundle/docs/');
 }
@@ -66,6 +69,9 @@ if (existsSync(docsSrc)) {
 const builtinSkillsSrc = join(root, 'packages/core/src/skills/builtin');
 const builtinSkillsDest = join(bundleDir, 'builtin');
 if (existsSync(builtinSkillsSrc)) {
+  if (existsSync(builtinSkillsDest)) {
+    rmSync(builtinSkillsDest, { recursive: true, force: true });
+  }
   cpSync(builtinSkillsSrc, builtinSkillsDest, {
     recursive: true,
     dereference: true,
@@ -83,8 +89,12 @@ const devtoolsDest = join(
 );
 const devtoolsDistSrc = join(devtoolsSrc, 'dist');
 if (existsSync(devtoolsDistSrc)) {
+  const targetDist = join(devtoolsDest, 'dist');
+  if (existsSync(targetDist)) {
+    rmSync(targetDist, { recursive: true, force: true });
+  }
   mkdirSync(devtoolsDest, { recursive: true });
-  cpSync(devtoolsDistSrc, join(devtoolsDest, 'dist'), {
+  cpSync(devtoolsDistSrc, targetDist, {
     recursive: true,
     dereference: true,
   });
@@ -99,6 +109,9 @@ if (existsSync(devtoolsDistSrc)) {
 const bundleMcpSrc = join(root, 'packages/core/dist/bundled');
 const bundleMcpDest = join(bundleDir, 'bundled');
 if (existsSync(bundleMcpSrc)) {
+  if (existsSync(bundleMcpDest)) {
+    rmSync(bundleMcpDest, { recursive: true, force: true });
+  }
   cpSync(bundleMcpSrc, bundleMcpDest, { recursive: true, dereference: true });
   console.log('Copied bundled chrome-devtools-mcp to bundle/bundled/');
 }