Vite plugin does not work with Cloudflare vite plugin

Author: kigawasCreated Jun 8, 2025Updated Sep 16, 2025

Labelspending triage

Describe the bug

Run pnpm create cloudflare@latest my-react-router-app --framework=react-router and update vite config. Or see reproduction below.

typescript

Error: The following environment configurations are incompatible with the Cloudflare Vite plugin:
        - "ssr" environment: `resolve.external`: ["@vanilla-extract/css","@vanilla-extract/css/fileScope","@vanilla-extract/css/adapter"]
To resolve this issue, avoid setting `optimizeDeps.exclude` and `resolve.external` in your Cloudflare Worker environments.

Reproduction

https://github.com/kigawas/vanilla-extract-cloudflare

System Info

bash

Not related

Used Package Manager

pnpm

Logs

bash

Validations

Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
The provided reproduction is a minimal reproducible example of the bug.

Source: vanilla-extract-css/vanilla-extract

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