Sourcemap for "xxxx" points to missing source files

[sanyuan0704]

Describe the bug

I found a weird problem that confused a lot when using react. When I started vite, the console reported a lot of warning logs like this.

  vite v2.6.13 dev server running at:

  > Local: http://localhost:3004/
  > Network: use `--host` to expose

  ready in 360ms.

Sourcemap for "/Users/sanyuan/code/draft/bundless-lab/vite-react/node_modules/.vite/react.js" points to missing source files
Sourcemap for "/Users/sanyuan/code/draft/bundless-lab/vite-react/node_modules/.vite/react_jsx-dev-runtime.js" points to missing source files
[BABEL] Note: The code generator has deoptimised the styling of /Users/sanyuan/code/draft/bundless-lab/vite-react/node_modules/.vite/react-dom.js?v=cf634466 as it exceeds the max of 500KB.
Sourcemap for "/Users/sanyuan/code/draft/bundless-lab/vite-react/node_modules/.vite/react-dom.js" points to missing source files

Reproduction

Create and start a React project with official scaffolding.

npm init vite@latest

System Info

System:
    OS: macOS 11.4
    CPU: (8) x64 Intel(R) Core(TM) i5-8257U CPU @ 1.40GHz
    Memory: 505.91 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 12.22.1 - /usr/local/opt/nvm/versions/node/v12.22.1/bin/node
    Yarn: 1.22.10 - /usr/local/opt/nvm/versions/node/v12.22.1/bin/yarn
    npm: 6.14.12 - /usr/local/opt/nvm/versions/node/v12.22.1/bin/npm
  Browsers:
    Chrome: 95.0.4638.69
    Safari: 14.1.1
  npmPackages:
    @vitejs/plugin-react: ^1.0.0 => 1.0.7 
    vite: ^2.6.4 => 2.6.13

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

[Niputi]

duplicate of #5438