change root path, entry html's source require will not found

[huchangfa123]

Describe the bug

After changing root path, in vite.config .

source which required in entry html , will not found.

Reproduction

https://stackblitz.com/edit/vitejs-vite-1dynea?file=ss%2Findex.html,vite.config.js&terminal=dev

System Info

System:
    OS: macOS 10.15.7
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 149.41 MB / 32.00 GB
    Shell: 5.7.1 - /bin/zsh
  Binaries:
    Node: 14.17.0
    Yarn: 1.22.10
    npm: 6.14.13
  Browsers:
    Chrome: 92.0.4515.159
    Safari: 14.1.2
  npmPackages:
    vite: ^2.5.0 => 2.5.0

Used Package Manager

yarn

Logs

No response

Validations

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• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/vue-next instead.
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• The provided reproduction is a minimal reproducible example of the bug.

[bluwy]

I can reproduce this with the react template and moving the index.html to a folder. It's very similar to #4760. Likely the same core issue with Vite now allowing or incorrectly resolving files outside of the root.

[waynebloss]

Here's how I got it working the way I wanted it:

export default defineConfig({
  envDir: __dirname,
  publicDir: Path.join(__dirname, "public"),
  root: Path.join(__dirname, "src"),
  build: {
    outDir: Path.join(__dirname, "dist"),
    rollupOptions: {
      input: [Path.join(__dirname, "src/index.html")],
    },
  },
  plugins: [
    viteReact(),
  ],
  resolve: {
    alias: {
      "@": Path.resolve(__dirname, "./src"),
    },
  },
});

[stackblitz]

Start a new pull request in StackBlitz Codeflow.

• vitejs-vite-1dynea (Open reproduction)

[zhang592135258]

I have looked at the related problems you mentioned in the past, but I have not found relevant solutions in them

[Rey-Wang]

@waynebloss what's your folder structure

[waynebloss]

@Rey-Wang

• dist/
• public/
• src/
  • index.html

And the vite config is on the root level with dist, public, src…

[aleclarson]

#16629 should make this easier. The idea is you'd keep root set to the actual root directory and set entryRoot to "src" or wherever your index.html is kept.