fix(cloudflare): fix baseURL traversal for wrangler assets dir

[jel-massih]

"..".repeat(N) concatenates without a separator, so for N >= 2 it produces "...." / "......" instead of "../.." / "../../..". With a 2+ segment baseURL (e.g. /foo/bar), cloudflare-module builds generate a wrangler.json whose assets.directory resolves to a non-existent .... subdirectory, breaking wrangler deploy and static asset serving.

Fix: "..".repeat(N) → "../".repeat(N) so the traversal works as expected

Reproduction Steps:

Build any cloudflare-module (or cloudflare-durable) project with a baseURL of 2+ segments, e.g.:

// nitro.config.ts
export default defineNitroConfig({
  preset: "cloudflare-module",
  baseURL: "/foo/bar",
});

Then check the generated .output/server/wrangler.json: assets.directory value

Before fix:

{
  "compatibility_date": "2026-05-08",
  "main": "index.mjs",
  "assets": {
    "binding": "ASSETS",
    "directory": "../public/foo/bar/...."
  },
  ...
}

After fix:

{
  "compatibility_date": "2026-05-08",
  "main": "index.mjs",
  "assets": {
    "binding": "ASSETS",
    "directory": "../public"
  },
...
}

[vercel]

@jel-massih is attempting to deploy a commit to the Nitro Team on Vercel.

A member of the Team first needs to authorize it.

[coderabbitai]

📝 Walkthrough

Walkthrough

The writeWranglerConfig function in the Cloudflare preset utilities has been reformatted. Line wrapping around the ../.repeat(...) expression for computing the overrides.assets.directory path in the module target was adjusted. No logic, values, or control flow were changed.

Changes

Wrangler Module Target Path Formatting

Layer / File(s)	Summary
Assets Directory Path Formatting src/presets/cloudflare/utils.ts	Line wrapping reformatted in the module target's overrides.assets.directory path computation around the ../.repeat(...) expression; logic and values unchanged.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title follows conventional commits format with 'fix' type prefix and includes a specific, accurate description of the fix related to baseURL traversal for Cloudflare wrangler assets directory.
Description check	✅ Passed	The PR description clearly explains the bug, provides reproduction steps with before/after examples, and directly relates to the code changes made.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

Tip

💬 Introducing Slack Agent: The best way for teams to turn conversations into code.

Slack Agent is built on CodeRabbit's deep understanding of your code, so your team can collaborate across the entire SDLC without losing context.

• Generate code and open pull requests
• Plan features and break down work
• Investigate incidents and troubleshoot customer tickets together
• Automate recurring tasks and respond to alerts with triggers
• Summarize progress and report instantly

Built for teams:

• Shared memory across your entire org—no repeating context
• Per-thread sandboxes to safely plan and execute work
• Governance built-in—scoped access, auditability, and budget controls

One agent for your entire SDLC. Right inside Slack.

👉 Get started

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[pi0]

Thnx. Can you please provide reproductin steps?

[jel-massih]

Thnx. Can you please provide reproductin steps?

Sure! Updated PR with hopefully useful repro steps.

Validated issue with basically these commands

mkdir nitro-cf-baseurl-repro && cd nitro-cf-baseurl-repro
npm init -y
npm pkg set type=module
echo 'export default { preset: "cloudflare-module", baseURL: "/foo/bar" }' > nitro.config.ts
npx nitro build
grep -A2 assets .output/server/wrangler.json

with grep output:

  "assets": {
    "binding": "ASSETS",
    "directory": "../public/foo/bar/...."