/**
 * RelayAdapt Cross-Contract Call Helpers
 *
 * Builds relay() transactions for private DeFi operations.
 * RelayAdapt atomically: unshield → execute calls → shield output.
 *
 * On-chain observer sees: "RelayAdapt called a DEX" — zero link to user.
 */
import type { RailgunTransactionStruct } from './transaction-formatter';
export declare const RELAY_ADAPT_ADDRESS = "0xB0BC6d50098519c2a030661338F82a8792b85404";
export interface ActionData {
    random: Uint8Array;
    requireSuccess: boolean;
    minGasLimit: bigint;
    calls: Array<{
        to: string;
        data: string;
        value: bigint;
    }>;
}
/**
 * Generate shield requests for output tokens using RelayAdaptHelper from the engine.
 *
 * Each shield request tells RelayAdapt to shield a token back into the privacy pool
 * for the given Railgun address (0zk...).
 */
export declare function buildRelayShieldRequests(railgunAddress: string, shieldTokens: Array<{
    tokenAddress: string;
    recipientAddress?: string;
}>): Promise<{
    shieldRequests: any[];
    shieldCallData: string;
}>;
/**
 * Compute adaptParams — hash of nullifiers + transaction count + action data.
 *
 * This is verified by the contract to ensure the transaction wasn't modified by MITM.
 * Must be computed BEFORE the ZK proof since it goes into boundParamsHash.
 */
export declare function computeAdaptParams(nullifiers: string[], actionData: ActionData): string;
/**
 * Build the relay() calldata for RelayAdapt.
 *
 * Takes the formatted transaction struct (same as transact()) and wraps it
 * in relay() with the action data.
 */
export declare function buildRelayCalldata(transactionStruct: RailgunTransactionStruct, actionData: ActionData): {
    to: string;
    data: string;
};
/**
 * Build the full ordered calls array for a cross-contract operation.
 *
 * Appends the shield() call at the end so output tokens are shielded
 * back into the privacy pool after the DeFi operation completes.
 */
export declare function buildOrderedCalls(userCalls: Array<{
    to: string;
    data: string;
    value?: string;
}>, shieldCallData: string, inputTokenAddress: string, shieldTokens: Array<{
    tokenAddress: string;
}>): Array<{
    to: string;
    data: string;
    value: bigint;
}>;