config hook of injected plugins from test projects no longer receives `resolve.conditions` or `resolve.mainfields` values

[dominikg]

Describe the bug

prior to vitest 3.2.0, up until 3.2.0-beta.3, plugins added through test config received config.resolve.conditions values, now they are undefined.

this breaks a utility plugin in @testing-library/svelte used by sveltes official vitest template sv add vitest to inject the browser condition after the node condition for client tests.

reported here: sveltejs/cli#579

utility plugin code https://github.com/testing-library/svelte-testing-library/blob/main/src/vite.js#L47
the inject of browser condition does not happen because indexOf node condition is -1

Reproduction

https://stackblitz.com/edit/vitest-dev-vitest-xdsbmkd6?file=vite.config.ts

see console output, first run with 3.2.0 logs undefined, second run with 3.2.0-beta.3 logs node,development|production

System Info

stackblitz, vitest 3.2.0

Used Package Manager

pnpm

Validations

• Follow our Code of Conduct
• 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.

[dominikg]

this still happens with 3.2.2 too, i used 3.2.0 above to narrow down where it was introduced

[AriPerkkio]

Looks like regression, broke during #8049.

import { defineConfig } from "vitest/config";

export default defineConfig({
  test: {
    projects: [
      {
        test: { name: "example" },
        plugins: [
          {
            name: "debugging",
            config(config) {
              console.log({ resolve: config.resolve });
            },
          },
        ],
      },
    ],
  },
});

Before #8049:

> vitest --run "test/add.test.ts"

{
  resolve: {
    mainFields: [],
    conditions: [ 'node', 'development|production' ],
    alias: undefined
  }
}

After:

> vitest --run "test/add.test.ts"

{ resolve: undefined }

[AriPerkkio]

Related to vitest:project plugin's enforce change:

vitest/packages/vitest/src/node/plugins/workspace.ts

Lines 35 to 36 in c69be1f

	name: 'vitest:project',
	enforce: 'post',

vitest/packages/vitest/src/node/plugins/workspace.ts

Lines 35 to 36 in 703581b

	name: 'vitest:project',
	enforce: 'pre',

[sheremet-va]

Fixed by #8130