开发环境的 tree-shaking 问题

[Miofly]

Describe the bug

I have a public 'utils' directory in my project, structured like the figure, export all the methods in 'index.ts', so that they can be import in utils/index.ts, but that will cause all uitls in the development environment to be loaded.

example: import { isUndefined } from '@dzh/utils'，I only import one of these methods, and all utils were imported

import { isUndefined } from '@dzh/utils/src/is';
Must be import to a specific directory to not be so.

So there is no good way to deal with this kind of problem in the development environment, in addition to utils there will be public hooks and so on。

Reproduction

https://github.com/Miofly/vite-dev-tree-shaking

System Info

System:
    OS: macOS 12.3.1
    CPU: (8) arm64 Apple M1
    Memory: 83.66 MB / 8.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 16.0.0 - ~/.nvm/versions/node/v16.0.0/bin/node
    Yarn: 1.22.10 - /usr/local/bin/yarn
    npm: 6.14.15 - ~/Documents/mio/new-mio/mio/node_modules/.bin/npm
  Browsers:
    Chrome: 103.0.5060.134
    Safari: 15.4
  npmPackages:
    @vitejs/plugin-vue: ^3.0.1 => 3.0.1 
    vite: ^3.0.1 => 3.0.4

Used Package Manager

pnpm

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.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to vuejs/core instead.
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• The provided reproduction is a minimal reproducible example of the bug.

[bluwy]

I think this is a duplicate of #8237