import type { BuildOptions } from '../contracts/build-contracts.js';
/**
 * Canonical identity for one complete {@link BuildOptions} request.
 *
 * @remarks
 * Semantically unordered collections (`external`, `define` keys, array entrypoints)
 * are sorted. Plugin, `conditions`, and source-transform order is preserved because
 * Rolldown hook and `conditionNames` precedence depend on it.
 *
 * Deprecated / ignored adapter fields (`splitting`, `bundle`, `outbase`) still
 * participate in the key so requests that differ only on those fields do not
 * coalesce. Empty `conditions` / `define` / `external` normalize to the same
 * sentinel as `undefined`.
 */
export declare function createBuildRequestIdentity(options: BuildOptions): string;
/** @deprecated Use {@link createBuildRequestIdentity}. */
export declare const createBuildOptionsDedupeKey: typeof createBuildRequestIdentity;