#vite

Vitest 5.0 Beta Breaking Changes: Full Guide

Vitest 5.0 beta ships 10 breaking changes across mocking, config, and assertions. Full rundown, sourced to the official migration guide, plus fixes.

Aug 13, 2026Read more →

A terminal window showing the real Vite build error: MISSING_EXPORT satteriCollectImagesPlugin is not exported by the @astrojs/markdown-satteri optional peer dependency

Guides & Fixes

Fix Astro 7 MISSING_EXPORT satteriCollectImagesPlugin

Fix Astro 7's MISSING_EXPORT satteriCollectImagesPlugin error from @astrojs/mdx. The real cause, and the version that already fixes it.

Aug 5, 2026Read more →

A terminal window showing the real error: Not implemented, thrown from PluginContextImpl.generateBundle when Astro's dev toolbar runs under Vite 8's Rolldown esbuild-compat shim

Guides & Fixes

Fix Astro Dev Toolbar 'Not Implemented' Crash

Fix Astro's dev toolbar crashing with a 'Not implemented' error under Vite 8's Rolldown esbuild-compat shim. Real workaround included.

Aug 5, 2026Read more →

A terminal window showing the real error: Missing field tsconfigPaths on BindingViteResolvePluginConfig.resolveOptions, thrown by @tailwindcss/vite under Vite 8's Rolldown resolver

Guides & Fixes

Fix @tailwindcss/vite Rolldown Resolver Crash

Fix @tailwindcss/vite crashing with 'Missing field tsconfigPaths' under Vite 8's Rolldown resolver. Upgrade Vite and Rolldown to clear it.

Aug 5, 2026Read more →

Vite's own migration guide text stating format sniffing between package.json browser and module fields has been removed, next to an explicit resolve.mainFields config

Guides & Fixes

Fix Vite 8 Browser/Module Field Resolution Change

Fix Vite 8 removing format sniffing between package.json browser and module fields. Explicit resolve.mainFields order now matters.

Aug 5, 2026Read more →

A code comparison showing build.rollupOptions renamed to build.rolldownOptions in a Vite config, with the same manualChunks function unchanged

Guides & Fixes

Fix Vite 8's build.rollupOptions Deprecation

Fix the build.rollupOptions deprecation warning in Vite 8. Rename to build.rolldownOptions before the old key is removed.

Aug 5, 2026Read more →

A code comparison showing Vite's own migration guide text on CommonJS default import interop, alongside the legacy.inconsistentCjsInterop config flag that restores the old behavior

Guides & Fixes

Fix Vite 8 CommonJS Default Import Breaking Change

Fix Vite 8 breaking CommonJS default imports under Rolldown's stricter interop. Restore the old behavior with one legacy config flag.

Aug 5, 2026Read more →

Vite's own migration guide text stating require calls for externalized modules are now preserved as require calls, next to a Node.js createRequire interop fix

Guides & Fixes

Fix Vite 8 Externalized require() Behavior Change

Fix Vite 8 no longer converting require() of externals into import statements. ESM-only output can now throw at runtime.

Aug 5, 2026Read more →

A code comparison showing a CSS rule with both backdrop-filter and -webkit-backdrop-filter before minification, and only -webkit-backdrop-filter surviving after Vite 8's default Lightning CSS minification

Guides & Fixes

Fix Vite 8 Lightning CSS Dropping backdrop-filter

Fix Vite 8's Lightning CSS minifier silently dropping unprefixed backdrop-filter in production builds. One cssMinify config line restores it.

Aug 5, 2026Read more →

A terminal window showing the real error: Invalid output options for manualChunks, Expected Function but received Object, from a Vite 8 build using the old object-form vendor chunk config

Guides & Fixes

Fix Vite 8 manualChunks Object Form Removed

Fix Vite 8 rejecting object-form manualChunks. Rolldown only supports the function form - here's the real error and the fix.

Aug 5, 2026Read more →

Vite's own migration guide text stating the Oxc transformer does not support lowering native decorators, next to a tsconfig.json experimentalDecorators setting

Guides & Fixes

Fix Vite 8 Oxc Not Lowering Native Decorators

Fix Vite 8's Oxc transformer not lowering native class decorators. Understand the limitation and the real workaround for older build targets.

Aug 5, 2026Read more →

A code comparison showing resolve.alias customResolver, removed in Vite 8, replaced by a plugin using a resolveId hook with enforce: 'pre'

Guides & Fixes

Fix Vite 8 resolve.alias customResolver Removal

Fix Vite 8 removing resolve.alias customResolver, which breaks CSS/JS path-alias plugins. Astro's own core fix shows the replacement.

Aug 5, 2026Read more →

A terminal window showing a real npm ERESOLVE error after upgrading to Astro 7: npm cannot resolve vite@8.2.0 against a plugin's peer dependency capped at Vite 7

Guides & Fixes

Fix ERESOLVE Vite 8 Peer Dependency Errors in Astro 7

Fix the ERESOLVE peer dependency error when npm install fails after upgrading to Astro 7, caused by plugins that don't yet support Vite 8.

Aug 4, 2026Read more →