Changelog

vitejs/vite · May 11–17, 2026 · 27 commits

Vite tightens worker teardown, bundled dev, and SSR fixes

Lazy bundled dev lands, workers inherit config correctly, and several teardown, SSR, and build regressions are fixed.

Bundled dev gets on-demand loading and per-environment config

Vite’s bundled dev mode now supports lazy bundling, kicking off module compilation only when needed after the initial bundle. This came alongside making isBundled resolve per environment, laying groundwork for more precise client/worker/build behavior.

Workers and preprocessing now inherit config and shut down cleanly

Worker bundles now receive define and target settings, fixing mismatches between main and worker builds. CSS preprocessor workers are also properly awaited during teardown, preventing lingering Sass/Less/Stylus processes when the server closes.

Build and SSR correctness fixes

Several subtle build/runtime bugs were addressed: dependency scanning now honors Rolldown JSX options, SSR transforms avoid rewriting labels and control-flow targets, and build output correctly recopies public/ after a prior write=false run. The legacy plugin also stops injecting modulepreload tags in legacy-only builds.

Plugin and dev tooling compatibility improvements

The optimizer’s esbuild-to-rolldown bridge now passes richer build-result fields through to onEnd, improving plugin compatibility. Dev console forwarding is also more resilient, handling transport send failures without crashing on the expected pre-connect case.

Other misc changes

  • Repo docs/messages were updated from build.rollupOptions to build.rolldownOptions in affected paths.
  • Release/version bumps for Vite, create-vite, and plugin-legacy.
  • CI/workflow hardening and dependency updates.
  • Changelog/release-note cleanup and small test updates.