Conditions not prioritized over mainFields.

[mkilpatrick]

Describe the bug

When I'm running a Vite build with

resolve: {
    conditions: ["worker", "webworker"],
},

and importing https://github.com/Andarist/react-textarea-autosize, I seem to be getting the browser version even though they define a worker in exports. Based on the Vite documentation about mainFields, the conditional exports should take precedence.

I notice that the library has a warning because they are defining browser both at the root and in exports.
https://publint.dev/react-textarea-autosize@8.5.2

I've confirmed that removing the root browser field from the package then allows the worker export to be loaded.

Reproduction

N/A

Steps to reproduce

No response

System Info

System:
    OS: macOS 12.6
    CPU: (10) arm64 Apple M1 Max
    Memory: 623.92 MB / 64.00 GB
    Shell: 5.2.15 - /usr/local/bin/bash
  Binaries:
    Node: 18.9.0 - ~/.nvm/versions/node/v18.9.0/bin/node
    Yarn: 1.22.19 - /opt/homebrew/bin/yarn
    npm: 9.4.1 - /opt/homebrew/bin/npm
    pnpm: 8.6.2 - /opt/homebrew/bin/pnpm
  Browsers:
    Chrome: 115.0.5790.170
    Safari: 16.4.1
  npmPackages:
    @vitejs/plugin-react: ^4.0.3 => 4.0.3 
    vite: ^4.4.9 => 4.4.9

Used Package Manager

npm

Logs

No response

Validations

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[sapphi-red]

Duplicate of #10323