Migration from v1

      • transforms

    • jsx and enableEsbuild have been removed; Use the new esbuild option instead.

    • are now nested under css.

    • All build-specific options are now nested under build.

      • rollupInputOptions and rollupOutputOptions are replaced by .
      • esbuildTarget is now build.target.
      • emitManifest is now .
      • The following build options have been removed since they can be achieved via plugin hooks or other options:
        • entry
        • emitAssets
        • emitIndex
        • configureBuild

    • All server-specific options are now nested under server.

      • hostname is now .
      • httpsOptions has been removed. server.https can directly accept the options object.
      • chokidarWatchOptions is now .

    • assetsInclude now expects string | RegExp | (string | RegExp)[] instead of a function.

    Alias Behavior Change

    alias is now being passed to @rollup/plugin-alias and no longer require start/ending slashes. The behavior is now a direct replacement, so 1.0-style directory alias key should remove the ending slash:

    Alternatively, you can use the option format for more precise control.

    Vite 2.0 core is now framework agnostic. Vue support is now provided via . Simply install it and add it in the Vite config:

    A custom plugin can be used to transform Vue custom blocks like the one below:

    React Support

    React Fast Refresh support is now provided via .

    Manifest Format Change

    The build manifest now uses the following format:

    For entry JS chunks, it also lists its imported chunks which can be used to render preload directives.

    Vite 2 uses a completely redesigned plugin interface which extends Rollup plugins. Please read the new .

    Some general pointers on migrating a v1 plugin to v2:

    • resolvers -> use the resolveId hook
    • transforms -> use the hook
    • indexHtmlTransforms -> use the transformIndexHtml hook
    • Serving virtual files -> use + load hooks

    Since most of the logic should be done via plugin hooks instead of middlewares, the need for middlewares is greatly reduced. The internal server app is now a good old instance instead of Koa.