/**
 * Vite plugin: build environment configuration.
 *
 * Owns all Environment API concerns for builds:
 * - Top-level config: `builder.sharedConfigBuild`, `ssr.external` (server mode)
 * - `configEnvironment('client')`: rollupOptions.input, outDir
 * - `configEnvironment('ssr')`: outDir, SSR-specific build options, rollupOptions
 * - `buildApp()`: orchestrates build order (client-only or client → SSR)
 *
 * `rollupOptions.input` must be set via `configEnvironment` (not the
 * top-level `config` hook) because `builder.build(env)` uses
 * environment-resolved config, not the top-level config.
 *
 * @internal
 */
import type { PluginOption } from 'vite';
import type { PluginSharedState } from './plugin-shared-state.js';
export declare function gracileBuildEnvironmentPlugin({ state, }: {
    state: PluginSharedState;
}): PluginOption;
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