When dependencies of config file change, dev server doesn't restart as espect.

[sanyuan0704]

Describe the bug

When i use js config file , i found when dependencies of config file change, dev server cannot restart.But the problem doesn't appear in ts config file.

Reproduction

You can reproduce easily, like this:

// config-dep.js
module.exports = {
   a: 1
}

// vite.config.js
const { a } = require('./config-dep');
module.exports = {
  define: {
     VITE_TEST: a
  }
}

Then you change the content of config-dep.js, the dev server cannot get the change.

System Info

System:
    OS: macOS 11.2
    CPU: (8) x64 Apple M1
    Memory: 30.39 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 14.18.1 - /usr/local/bin/node
    Yarn: 1.22.17 - /usr/local/bin/yarn
    npm: 6.14.15 - /usr/local/bin/npm
  Browsers:
    Chrome: 96.0.4664.55
    Safari: 14.0.3
  npmPackages:
    vite: workspace:* => 2.7.0-beta.8

Used Package Manager

yarn

Logs

No response

Validations

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

[sanyuan0704]

I have commit the pr to solve the problem.