Environment API

export default defineConfig({
  build: { sourcemap: false },
  optimizeDeps: { include: ['lib'] },
})

export default defineConfig({
  build: { sourcemap: false },  // Inherited by all environments
  optimizeDeps: { include: ['lib'] },  // Client only
  environments: {
    // SSR environment
    server: {},
    // Edge runtime environment
    edge: {
      resolve: { noExternal: true },
    },
  },
})

interface EnvironmentOptions {
  define?: Record<string, any>
  resolve?: EnvironmentResolveOptions
  optimizeDeps: DepOptimizationOptions
  consumer?: 'client' | 'server'
  dev: DevOptions
  build: BuildOptions
}

import { customEnvironment } from 'vite-environment-provider'

export default defineConfig({
  environments: {
    ssr: customEnvironment({
      build: { outDir: '/dist/ssr' },
    }),
  },
})

{
  name: 'env-aware',
  transform(code, id, options) {
    if (options?.ssr) {
      // SSR-specific transform
    }
  },
}