Dynamic imports with a load plugin fail

[Finesse]

Describe the bug

vite-node fails to handle dynamic imports of plugin-transformed modules, throwing:

Error: The server is being restarted or closed. Request is outdated

The requirements for the bug are:

1. Having a plugin in the Vite config that defines a custom load function for a file extension.
2. Importing a file with this extension dynamically in the runtime code.

A workaround for this bug is running vite-node with the --watch flag, and executing process.exit() in the runtime code to finish the script. You can see it by running npm run workaround in the reproducible demo.

Reproduction

1. Open https://stackblitz.com/edit/vite-node-dynamic-import-bug (backup)
2. Wait until npm install completes
3. Execute npm run bug

The output is:

❯ npm run bug

> vite-node-dynamic-import-bug@1.0.0 bug
> vite-node index.ts

Script started
Performing dynamic import...
❌ FAILED: Error: The server is being restarted or closed. Request is outdated
    at throwClosedServerError (file:///home/projects/vite-node-dynamic-import-bug/node_modules/vite/dist/node/chunks/config.js:29277:32)
    at EnvironmentPluginContainer.resolveId (file:///home/projects/vite-node-dynamic-import-bug/node_modules/vite/dist/node/chunks/config.js:29409:65)
    at EnvironmentModuleGraph._resolveUrl (file:///home/projects/vite-node-dynamic-import-bug/node_modules/vite/dist/node/chunks/config.js:35382:39)
    at EnvironmentModuleGraph.getModuleByUrl (file:///home/projects/vite-node-dynamic-import-bug/node_modules/vite/dist/node/chunks/config.js:35190:19)
    at doTransform (file:///home/projects/vite-node-dynamic-import-bug/node_modules/vite/dist/node/chunks/config.js:23300:17)

System Info

System:
    OS: macOS 15.7.2
    CPU: (8) arm64 Apple M1
    Memory: 70.19 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.14.0 - /usr/local/bin/node
    Yarn: 1.22.22 - /usr/local/bin/yarn
    npm: 11.4.1 - /usr/local/bin/npm
    pnpm: 10.20.0 - /usr/local/bin/pnpm
  Browsers:
    Chrome: 142.0.7444.60
    Firefox: 144.0
    Safari: 18.6
    Safari Technology Preview: 26.0

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!): Add a test to reproduce a dynamic importing fail #9