import type { EffectDataPlatformValidationOptions } from './types.js';
/**
 * Validates the `x-modernjs-data-envelope` header (the data-platform
 * transport/cache contract: protocol version, scope, selection plan).
 *
 * This is NOT a security boundary: the envelope is client-constructed cache
 * metadata used for batching, scope keys and hydration. Cross-project
 * authorization runs through the bff-core policy evaluator wired in via
 * `validateRequest` (see `EffectRequestValidator`), which both the direct
 * and batched request paths hit before this check.
 */
export declare function validateDataPlatformRequestEnvelope(request: Request, options: EffectDataPlatformValidationOptions | undefined): Response | null;
export declare function mergeDataPlatformOptions(base: EffectDataPlatformValidationOptions | undefined, override: Partial<EffectDataPlatformValidationOptions> | undefined): EffectDataPlatformValidationOptions | undefined;