import { type Address } from "viem";
/**
 * Validates that a Midnight authorization grant targets a supported protocol operator.
 *
 * @param params - Authorization target validation parameters.
 * @param params.chainId - Chain id used to resolve supported Midnight operators.
 * @param params.authorized - Operator address receiving authorization.
 * @returns Nothing after the operator matches MidnightBundles or a supported ratifier.
 * @throws {UnsupportedMidnightAuthorizationTargetError} when `authorized` is not a supported operator.
 * @internal
 */
export declare const validateMidnightAuthorizationTarget: (params: {
    readonly chainId: number;
    readonly authorized: Address;
}) => void;