[lxsmnsyc]

Fixes #153 on main (1.x). The fix for next is in a separate PR.

An SSR build with ssr.target: 'webworker' now bundles the server build of solid-js. Before, it bundled the browser build, so isServer was false and renderToString threw not supported in the browser.

Cause

• With ssr.target: 'webworker', Vite gives the SSR environment the client resolve conditions.
• Since Vite 6, the top-level resolve.conditions no longer reaches the SSR environment.
• solid-js puts its server build under the worker condition.

Changes

• Vite 6 and later: the plugin adds worker to the SSR environment's conditions.
• Vite 4 and 5: the plugin sets ssr.resolve.conditions, keeping the top-level conditions that option replaces.
• Vite 3 has no ssr.resolve.conditions option and is not covered.

Testing

• Reproduced on Vite 5 to 8 with no user conditions, and on Vite 6 to 8 with the config from the issue.
• With the fix, Vite 4, 5, 6, 7 and 8 bundle the server build with all three test configs.
• Added a regression test that fails without the fix.
• vitest run and tsc --noEmit pass.

Note on the first commit

main had no unit tests. The first commit adds the same Vitest setup that next uses: a root vitest.config.ts, a test:unit script, and a step in the Vitest workflow. The other main fix PRs from this batch (#112, #153, #206, #130, #141) share this exact commit, so they do not conflict on it.

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🦋 Changeset detected

Latest commit: 9c17655

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
vite-plugin-solid	Patch

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commit: 9c17655