running vite leads to an error message when type: module is set in package.json

[Fuzzyma]

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Describe the bug

On windows 10, running vite leads to an error message when type: module is set in package.json. It complains about ERR_UNSUPPORTED_ESM_URL_SCHEME

Reproduction

1. Have a win 10 machine
2. Create a project with npm init @vitejs/app and choose vue or ts-vue.
3. Edit package.json to use type:module
4. npm run dev

System Info

• vite version: 2 beta 48
• Operating System: win 10
• Node version: v15.6.0
• Package manager (npm/yarn/pnpm) and version: npm v7.4.0

Logs (Optional if provided reproduction)

The error message I am getting:

$ npm run dev

> vite-project2@0.0.0 dev
> vite

failed to load config from C:/Repositories/test/vite-project2/vite.config.js
error when starting dev server:
Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only file and data URLs are supported by
 the default ESM loader. On Windows, absolute paths must be valid file:// URLs.
Received protocol 'c:'
    at new NodeError (node:internal/errors:329:5)
    at Loader.defaultResolve [as _resolve] (node:internal/modules/esm/resolve:82
4:11)
    at Loader.resolve (node:internal/modules/esm/loader:86:40)
    at Loader.getModuleJob (node:internal/modules/esm/loader:230:28)
    at Loader.import (node:internal/modules/esm/loader:165:28)
    at importModuleDynamically (node:internal/modules/cjs/loader:1051:27)
    at exports.importModuleDynamicallyCallback (node:internal/process/esm_loader
:30:14)
    at eval (eval at loadConfigFromFile (C:\Repositories\test\vite-project2\node
_modules\vite\dist\node\chunks\dep-382a279c.js:47522:37), <anonymous>:1:21)
    at loadConfigFromFile (C:\Repositories\test\vite-project2\node_modules\vite\
dist\node\chunks\dep-382a279c.js:47522:37)
    at resolveConfig (C:\Repositories\test\vite-project2\node_modules\vite\dist\
node\chunks\dep-382a279c.js:47240:34)

[yyx990803]

closed via 33d3cca