Setting build.outDir to current or parent directories breaks server restart / hot reload

[5-tom]

Describe the bug

If you set build.outDir in defineConfig to the current (.) or parent (..) directory, the server no longer restarts when files are modified.

import { defineConfig } from 'vite';

export default defineConfig({
  build: {
    outDir: ".." // or '/', '.', '..', '../../' etc.
  },
});

Reproduction

https://stackblitz.com/edit/vitejs-vite-xhnq6i?file=index.html

Steps to reproduce

Modify vite.config.js to include build.outDir as "..". Restart vite for your config to come into effect and then modify any file. The server will not restart.

System Info

System:
    OS: Linux 6.1 Debian GNU/Linux 12 (bookworm) 12 (bookworm)
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
    Memory: 7.97 GB / 15.35 GB
    Container: Yes
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 21.6.2 - ~/.nvm/versions/node/v21.6.2/bin/node
    npm: 10.2.4 - ~/.nvm/versions/node/v21.6.2/bin/npm

Used Package Manager

npm

Logs

No response

Validations

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• Read the Contributing Guidelines.
• Read the docs.
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• The provided reproduction is a minimal reproducible example of the bug.

[stackblitz]

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• vitejs-vite-xhnq6i (Open reproduction)