fix(vite-plugin-uni): 修复 Windows 下 UTS 模块解析路径

[6iedog]

Summary

Fix Windows + Node.js v24 compatibility for app UTS module resolution in dev mode.

When app UTS modules are resolved to raw Windows absolute paths like C:/..., Vite may eventually pass them into ESM import flow, which can trigger:

ERR_UNSUPPORTED_ESM_URL_SCHEME
Only URLs with a scheme in: file, data, and node are supported...
Received protocol 'd:'
This patch makes the app UTS resolver return Vite-compatible /@fs/ module ids on Windows instead of bare absolute paths.

Changes

update packages/vite-plugin-uni/src/config/resolve.ts
prefix Windows app UTS resolved paths with FS_PREFIX
preserve existing non-Windows behavior
add packages/vite-plugin-uni/tests/resolve.spec.ts
cover Windows app UTS resolver output for ?uts-proxy

Why here

The failing path is in the dev resolver used by vite-plugin-uni, and this is the smallest upstream-compatible fix:

it keeps existing UTS resolution logic
it follows Vite’s existing /@fs/ convention for filesystem paths
it avoids relying on Node loader hooks or user-side workarounds

Verification

Passed:

pnpm exec jest --runInBand --runTestsByPath "packages/vite-plugin-uni/tests/resolve.spec.ts"
pnpm exec jest --runInBand packages/vite-plugin-uni/tests/static.spec.ts packages/vite-plugin-uni/tests/sourcemap.spec.ts

Context

This addresses a Windows + Node.js v24 issue where bare absolute filesystem paths are no longer accepted when they later reach ESM import handling.

[WuChenDi]

Thanks @6iedog for putting this fix together! 🙏

We're running into the exact same ERR_UNSUPPORTED_ESM_URL_SCHEME on Windows + Node.js v24 when building with uni build -p mp-weixin on the latest @dcloudio/* (3.0.0-5.x). Linux/macOS builds are unaffected, which lines up perfectly with the analysis here.

Would a maintainer be able to review and merge this when time permits? It currently blocks Windows + Node 24 builds, and the /@fs/ approach looks like the minimal, Vite-idiomatic fix. Happy to help test it against our project if that would be useful.

Thanks for the great work on uni-app! 🚀