Storybook builder for Vite

Build your stories with vite for fast startup times and near-instant HMR.

Project has been renamed

This project has moved from storybook-builder-vite to @storybook/builder-vite as part of a larger effort to improve Vite support in Storybook. To automatically migrate your existing project, you can run

 npx sb@next automigrate

To manually migrate:

1. Remove storybook-builder-vite from your package.json dependencies
2. Install @storybook/builder-vite
3. Update your core.builder setting in .storybook/main.js to @storybook/builder-vite.

Installation

Requirements:

• Vite 2.5 or newer

 npm install @storybook/builder-vite --save-dev

or

 yarn add --dev @storybook/builder-vite

or

 pnpm add --save-dev @storybook/builder-vite

Note: when using pnpm, you may need to enable shamefully-hoist, until https://github.com/storybookjs/builder-vite/issues/55 can be fixed.

Usage

In your main.js configuration file,
set core: { builder: "@storybook/builder-vite" }.

For autoreload of react stories to work, they need to have a .stories.tsx or .stories.jsx file suffix.
See also #53

The builder supports both development mode in Storybook, and building a static production version.

Customize Vite config

The builder will not read your vite.config.js file by default.

In .storybook/main.js (or whatever your Storybook config file is named)
you can override the Vite config:

 module.exports = {
  async viteFinal(config, { configType }) {
    // customize the Vite config here
    config.resolve.alias.foo = 'bar';

    // return the customized config
    return config;
  },
  // ... other options here
};

The viteFinal function will give you config which is
the builder's own Vite config. You can tweak this as you want,
for example to set up aliases, add new plugins etc.

The configType variable will be either "DEVELOPMENT" or "PRODUCTION".

The function should return the updated Vite configuration.

Svelte Customization

When using this builder with Svelte, your .storybook/main.js (or equivalent)
can contain a svelteOptions object to pass custom options to
vite-plugin-svelte:

 const preprocess = require('svelte-preprocess');

module.exports = {
  svelteOptions: {
    preprocess: preprocess({
      typescript: true,
      postcss: true,
      sourceMap: true,
    }),
  },
};

Note about working directory

The builder will by default enable Vite's server.fs.strict
option, for increased security. The default project root is set to the parent directory of the
storybook configuration directory. This can be overridden in viteFinal.

Getting started with Vite and Storybook (on a new project)

See https://vitejs.dev/guide/#scaffolding-your-first-vite-project,

npm create vite@latest # follow the prompts
npx sb init --builder @storybook/builder-vite && npm run storybook

Known issues

• HMR: saving a story file does not hot-module-reload, a full reload happens instead. HMR works correctly when saving component files.
• Prebundling: Vite restarts if it detects new dependencies which it did not know about and needs to pre-bundle. This breaks within storybook, with confusing error messages. If you see a message in your terminal like [vite] new dependencies found:, please add those dependencies to your optimizeDeps.include in viteFinal. E.g. config.optimizeDeps.include = [...(config.optimizeDeps?.include ?? []), "storybook-dark-mode"],. Vite 2.9.0 may improve this behavior.

Contributing

The Vite builder cannot build itself.
Are you willing to contribute?

https://github.com/storybookjs/builder-vite/issues/11

Have a look at the GitHub issues for known bugs. If you find any new bugs,
feel free to create an issue or send a pull request!

Please read the How to contribute guide.

About this codebase

The code is a monorepo with the core @storybook/builder-vite package,
and examples (like examples/react) to test the builder implementation.

Similar to the main storybook monorepo, you need yarn to develop this builder, because the project is organized as yarn workspaces.
This lets you write new code in the core builder package, and instantly use them from
the example packages.