stylus import error in vite: 1.0.0-rc.1

[starinsun]

Describe the bug

in vite: 1.0.0-rc.1, when I use stylus as :

import './index.styl'

or

 <style lang="stylus" scoped>
</>

stylus seems not work.

BTW in vite 1.0.0-beta.3 and @vue/compiler-sfc ^3.0.0-beta.15, everything is fine.

Reproduction

npm init vite-app project1
cd project1
npm i
npm install -D stylus

then transform index.css to index.styl, npm run dev.

System Info

@vue/compiler-sfc: 3.0.0-rc.1
vite: 1.0.0-rc.1
macos: 10.15.6
node: 12.16.1

error log

[vite] error applying css transforms: 
TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
    at validateString (internal/validators.js:117:11)
    at Object.dirname (path.js:1128:5)
...
code: 'ERR_INVALID_ARG_TYPE'

[phanmn]

Temporary workaround:
Go to file "node_modules/@vue/compiler-sfc/dist/compiler-sfc.cjs.js" at line 886.
Change options.fileName to options.filename

[yyx990803]

Closed via PR in vue-next