Vite 8

[cmalven]

Addresses #22

[cmalven]

@brianjhanson No rush, because we're still waiting on a couple of other Vite ecosystem plugins to make the jump to v8, but would be nice to get your eyeballs on this whenever you have a chance.

[Copilot]

Pull request overview

Updates this plugin repo to align with Vite 8’s migration from Rollup to Rolldown, including build tooling and documentation/playground updates to match the new configuration surface.

Changes:

• Migrate build tooling from unbuild to tsdown and update package metadata/exports accordingly.
• Update Vite config examples (README + playground) from build.rollupOptions to build.rolldownOptions and bump the playground to Vite 8.
• Adjust internal typing from Rollup to Rolldown (InputOption) to reflect the new bundler.

Reviewed changes

Copilot reviewed 7 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tsdown.config.ts	Adds tsdown build configuration (ESM + d.ts generation).
src/utils.ts	Switches InputOption type import from rollup to rolldown.
playground/basic/vite.config.js	Updates example config to use build.rolldownOptions.
playground/basic/package.json	Bumps playground Vite dependency to ^8.0.1.
playground/basic/package-lock.json	Lockfile update reflecting Vite 8 + Rolldown dependency tree.
package.json	Switches to tsdown, updates exports/engines, and narrows Vite peer to ^8.
build.config.ts	Removes the previous unbuild configuration file.
README.md	Updates the primary example snippet to rolldownOptions.
.gitignore	Adds .DS_Store to ignored files.

Files not reviewed (1)

• playground/basic/package-lock.json: Language not supported

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