viteFinal

Type: (config: Vite.InlineConfig, options: Options) => Vite.InlineConfig | Promise<Vite.InlineConfig>

Customize Storybook's Vite setup when using the Vite builder.

.storybook/main.js

export default {
  // Replace your-framework with the framework you are using (e.g., react-vite, vue3-vite)
  framework: '@storybook/your-framework',
  stories: ['../src/**/*.mdx', '../stories/**/*.stories.@(js|jsx|mjs|ts|tsx)'],
  async viteFinal(config, { configType }) {
    const { mergeConfig } = await import('vite');
 
    if (configType === 'DEVELOPMENT') {
      // Your development configuration goes here
    }
    if (configType === 'PRODUCTION') {
      // Your production configuration goes here.
    }
    return mergeConfig(config, {
      // Your environment configuration here
    });
  },
};

`Options`

Type: { configType?: 'DEVELOPMENT' | 'PRODUCTION' }

There are other options that are difficult to document here. Please introspect the type definition for more information.