From fd55b2f00271a6e6aac5c0d236c8e8384b70940c Mon Sep 17 00:00:00 2001
From: Ariel Sandor <39200214+arielsandor@users.noreply.github.com>
Date: Tue, 31 Mar 2026 09:46:29 -0300
Subject: [PATCH] fix: replace fs.promises.mkdtemp with mkdir for Workers
 compatibility

Cloudflare Workers' nodejs_compat (via unenv) does not implement
fs.mkdtemp or fs.promises.mkdtemp. This causes a runtime crash when
using @cloudflare/playwright in a Worker environment.

Replace mkdtemp(prefix) with mkdir(prefix + randomSuffix, { recursive: true })
in the three call sites within browserType.ts and chromium.ts. The random
suffix uses Math.random().toString(36).slice(2), providing sufficient
uniqueness for temporary directory names.
---
 packages/playwright-core/src/server/browserType.ts       | 6 ++++--
 packages/playwright-core/src/server/chromium/chromium.ts | 3 ++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/packages/playwright-core/src/server/browserType.ts b/packages/playwright-core/src/server/browserType.ts
index 98a2adec3..b0966041c 100644
--- a/packages/playwright-core/src/server/browserType.ts
+++ b/packages/playwright-core/src/server/browserType.ts
@@ -155,7 +155,8 @@ export abstract class BrowserType extends SdkObject {
     await this._createArtifactDirs(options);
 
     const tempDirectories: string[] = [];
-    const artifactsDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'playwright-artifacts-'));
+    const artifactsDir = path.join(os.tmpdir(), 'playwright-artifacts-' + Math.random().toString(36).slice(2));
+    await fs.promises.mkdir(artifactsDir, { recursive: true });
     tempDirectories.push(artifactsDir);
 
     if (userDataDir) {
@@ -164,7 +165,8 @@ export abstract class BrowserType extends SdkObject {
       if (!await existsAsync(userDataDir))
         await fs.promises.mkdir(userDataDir, { recursive: true, mode: 0o700 });
     } else {
-      userDataDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), `playwright_${this._name}dev_profile-`));
+      userDataDir = path.join(os.tmpdir(), `playwright_${this._name}dev_profile-` + Math.random().toString(36).slice(2));
+      await fs.promises.mkdir(userDataDir, { recursive: true });
       tempDirectories.push(userDataDir);
     }
     await this.prepareUserDataDir(options, userDataDir);
diff --git a/packages/playwright-core/src/server/chromium/chromium.ts b/packages/playwright-core/src/server/chromium/chromium.ts
index ec9f63d44..8aef15bc8 100644
--- a/packages/playwright-core/src/server/chromium/chromium.ts
+++ b/packages/playwright-core/src/server/chromium/chromium.ts
@@ -89,7 +89,8 @@ export class Chromium extends BrowserType {
     else if (headersMap && !Object.keys(headersMap).some(key => key.toLowerCase() === 'user-agent'))
       headersMap['User-Agent'] = getUserAgent();
 
-    const artifactsDir = await progress.race(fs.promises.mkdtemp(ARTIFACTS_FOLDER));
+    const artifactsDir = ARTIFACTS_FOLDER + Math.random().toString(36).slice(2);
+    await progress.race(fs.promises.mkdir(artifactsDir, { recursive: true }));
     const doCleanup = async () => {
       await removeFolders([artifactsDir]);
       const cb = onClose;