feat: tree-shake preload

[caoxiemeihao]

Description

Additional context

Reproduction 👉 https://stackblitz.com/edit/vite-pull-11646?file=.gitignore,dist%2Findex.iife.js%3AL8-L46&terminal=dev

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What is the purpose of this pull request?

• [ ] Bug fix
• [x] New Feature
• [ ] Documentation update
• [ ] Other

Before submitting the PR, please make sure you do the following

• [x] Read the Contributing Guidelines.
• [x] Read the Pull Request Guidelines and follow the PR Title Convention.
• [x] Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• [ ] Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• [ ] Ideally, include relevant tests that fail without this PR but pass with it.

[sapphi-red]

I'll convert to draft as the tests are failing.

[caoxiemeihao]

How do I get the CI to run again? My local tests are working fine!

  System:
    OS: macOS 10.15.7
    CPU: (8) x64 Intel(R) Core(TM) i7-1068NG7 CPU @ 2.30GHz
    Memory: 616.51 MB / 16.00 GB
    Shell: 5.7.1 - /bin/zsh
  Binaries:
    Node: 14.21.2 - ~/.nvm/versions/node/v14.21.2/bin/node
    Yarn: 1.22.19 - ~/.yarn/bin/yarn
    npm: 6.14.17 - ~/.nvm/versions/node/v14.21.2/bin/npm
  Browsers:
    Chrome: 109.0.5414.87
    Safari: 15.4
  npmPackages:
    vite: workspace:* => 4.1.0-beta.0 

[sapphi-red]

@caoxiemeihao I reran the CI. It failed again. I don't think it's a flaky fail. Perhaps you forgot to run pnpm build before running pnpm test.

[bluwy]

Cleaning up some stale PRs. Feel free to open a new PR for this once the tests are fixed!