import type { BuildResult } from '../build/build-adapter.js';
/**
 * Per-request browser build dedupe cache.
 *
 * @remarks
 * `DedupingBuildExecutor` only coalesces concurrent identical builds. Asset
 * processing can call the same logical bundle several times in one request
 * (page graph, HMR, content scripts) after the first build settles. This cache
 * reuses the settled result until the request scope ends.
 */
declare class RequestBuildDedupe {
    private readonly storage;
    run<T>(fn: () => Promise<T>): Promise<T>;
    dedupeBuild(key: string, build: () => Promise<BuildResult>): Promise<BuildResult>;
    getCachedCountForTests(): number;
}
export declare const requestBuildDedupe: RequestBuildDedupe;
export {};