@vitejs/plugin-vue build failed

[sufuwang]

Describe the bug

I use vite when build a miniprogram
node_modules/@vitejs/plugin-vue/dist/index.js have error
descriptor.styles.length is one , but query.index is one too , so

const block = descriptor.styles[index]; // block is undefined
const result = await compiler.compileStyleAsync(__spreadProps(__spreadValues({}, options.style), {
    filename: descriptor.filename,
    id: `data-v-${descriptor.id}`,
    isProd: options.isProduction,
    source: code,
    scoped: block.scoped // block.scoped have error
  }));

[vite:vue] Cannot read properties of undefined (reading 'scoped')
file: /Users/wangkai/Downloads/Code/uni-vite/src/styles/b.less?vue&type=style&index=1&src&lang.less
error during build:
TypeError: Cannot read properties of undefined (reading 'scoped')
    at transformStyle (/Users/wangkai/Downloads/Code/uni-vite/node_modules/@vitejs/plugin-vue/dist/index.js:4691:19)
    at Object.transform (/Users/wangkai/Downloads/Code/uni-vite/node_modules/@vitejs/plugin-vue/dist/index.js:4829:18)
    at /Users/wangkai/Downloads/Code/uni-vite/node_modules/rollup/dist/shared/rollup.js:22706:25
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Reproduction

https://github.com/sufuWang/uniapp_vite/tree/feature/vite

yarn build

System Info

mac os 12.0.1
node@14.17.3
vite@^2.6.14

Used Package Manager

yarn

Logs

No response

Validations

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• The provided reproduction is a minimal reproducible example of the bug.