refactor: rollup to rolldown, vite 7 to vite 8

[GauBen]

Description

No functional changes for external consumers!

This PR evolves our JS build pipeline from rollup to rolldown and vite 7 to vite 8

It should be faster to install and build, and tests now run on the latest version of vite to ensure it works

The large negative diff comes from a lot of dependencies removed, not from my changes

Checklist

Source code

• I've shared and documented any breaking change
• I've reviewed and updated the jahia-depends

Tests

• I've provided Unit and/or Integration Tests
• I've updated the parent issue with required manual validations

Tip

Documentation to guide the reviews: How to do a code review

[github-actions]

🦜 Chachalog

javascript-modules patch

• We have migrated our build pipelines and test suites to Vite 8 and Rolldown to ensure JS Modules work with the latest versions of this stack. (refactor: rollup to rolldown, vite 7 to vite 8 #668)

  This is not a breaking change, we support all Vite versions from 6 to 8.

• Exposed React's new <Activity> component and useEffectEvent hook, added in React 19.2.0. (refactor: rollup to rolldown, vite 7 to vite 8 #668)

Create a new entry online or run npx chachalog@0.5.1 prompt to create a new entry locally.

[Copilot]

Pull request overview

This PR migrates the JavaScript module build tooling from Rollup/Vite 7 to Rolldown/Vite 8 and updates fixture snapshots to match the new bundler output.

Changes:

• Replaces Rollup/pkgroll build tooling with Rolldown/tsdown.
• Updates Vite dependencies to ^8.0.14 across packages and fixtures.
• Refreshes fixture build snapshots for generated JS, source maps, and CSS.

Reviewed changes

Copilot reviewed 10 out of 15 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
yarn.lock	Updates dependency graph for Vite 8, Rolldown, tsdown, and related transitive packages.
vite-plugin/src/multi-entry.ts	Switches plugin typing from Rollup to Rolldown.
vite-plugin/src/insert-filename.ts	Switches plugin typing from Rollup to Rolldown and removes the Rollup AST cast.
vite-plugin/package.json	Updates build output exports and replaces pkgroll/Rollup with tsdown/Rolldown.
vite-plugin/fixtures/vite.config.js	Removes the Vite inspect plugin from fixture builds.
vite-plugin/fixtures/package.json	Updates fixture Vite dependency to Vite 8 and removes inspect plugin dependency.
vite-plugin/fixtures/expected/server/index.js.map	Refreshes expected server sourcemap output.
vite-plugin/fixtures/expected/server/index.js	Refreshes expected server bundle output.
vite-plugin/fixtures/expected/client/foo.client.tsx.js	Refreshes expected client bundle output.
vite-plugin/fixtures/expected/assets/style.css	Refreshes expected CSS output.
samples/hydrogen/package.json	Updates sample Vite dependency to Vite 8.
javascript-modules-engine/rolldown.config.mjs	Reworks engine bundling configuration for Rolldown.
javascript-modules-engine/package.json	Replaces Rollup scripts and dev dependencies with Rolldown.
jahia-test-module/package.json	Updates test module Vite dependency to Vite 8.

Files not reviewed (3)

• vite-plugin/fixtures/expected/assets/style.css: Language not supported
• vite-plugin/fixtures/expected/client/foo.client.tsx.js: Language not supported
• vite-plugin/fixtures/expected/server/index.js: Language not supported

[GauBen]

Blocked by rolldown/rolldown#9589