Function names not minified

[arwinvdv]

Describe the bug

I'm using vite-plugin-vue to build my Vue 3 app and I noticed that the function names are not minified in the production build. This increases the bundle size and exposes some implementation details that I would rather keep hidden. I checked the vite.config.js file and I have minify: 'terser' set as an option, but it doesn't seem to have any effect on the function names. Is this a bug or a limitation of the plugin? Is there any way to enable function name minification with vite-plugin-vue?

I created a example repo, here the changes to recreate: arwinvdv/vue3-template@18c6cb8

Reproduction

https://github.com/arwinvdv/vue3-template

Steps to reproduce

Checkout this repo: https://github.com/arwinvdv/vue3-template

Run:

npm install
npm run build

In the created js file the functions customFunctionThatIsNotMinified and anotherCustomFunctionThatIsNotMinified are visible.

System Info

System:
    OS: macOS 13.3.1
    CPU: (10) arm64 Apple M1 Max
    Memory: 66.70 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.9.1 - ~/.nvm/versions/node/v18.9.1/bin/node
    Yarn: 1.22.19 - ~/.nvm/versions/node/v18.9.1/bin/yarn
    npm: 8.19.1 - ~/.nvm/versions/node/v18.9.1/bin/npm
  Browsers:
    Chrome: 113.0.5672.63
    Edge: 112.0.1722.68
    Firefox: 112.0.2
    Safari: 16.4
  npmPackages:
    @vitejs/plugin-vue: ^4.0.0 => 4.2.1 
    vite: ^4.1.4 => 4.3.5

Used Package Manager

npm

Logs

No response

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