/**
 * Fee Escrow — EIP-712 signing, fee calculation, and nonce fetching
 * for the on-chain FeeEscrow contract.
 *
 * The escrow is completely optional. When feeBps=0, none of this code runs.
 */
import type { ExchangeVersion, FeeAuthRequest } from './types.js';
/** Return the FeeEscrow contract address for a given exchange version.
 *  V1 = USDC.e collateral; V2 = pUSD collateral. */
export declare function feeEscrowAddressFor(version: ExchangeVersion): string;
/**
 * Calculate fee amount in raw USDC (6 decimals).
 *
 * @param price - Order price (e.g. 0.55)
 * @param size - Order size in tokens (e.g. 100)
 * @param feeBps - Fee in basis points (e.g. 50 = 0.5%)
 * @returns Fee amount as bigint in raw USDC units
 */
export declare function calculateFee(price: number, size: number, feeBps: number): bigint;
/**
 * Generate a random bytes32 escrow order ID.
 * This is independent of Polymarket's orderId — it's a fee-escrow-specific key.
 */
export declare function generateEscrowOrderId(): string;
/**
 * Fetch the current nonce for a signer from a FeeEscrow contract via eth_call.
 *
 * Pass `feeEscrowAddressFor(exchangeVersion)` for `escrowAddress` when the
 * caller's exchange version is known — V1 and V2 nonces are tracked
 * independently on separate contracts.
 */
export declare function fetchEscrowNonce(rpcUrl: string, signerAddress: string, escrowAddress?: string): Promise<number>;
/**
 * Sign a FeeAuth EIP-712 message using the normalized signer.
 *
 * `exchangeVersion` selects the EIP-712 domain and the routing hint for the
 * cosigner. V1 (default): signs against ("PolyNodeFeeEscrow", "1", V1 contract)
 * and omits `escrow_contract` so the cosigner uses its V1 operator. V2: signs
 * against ("PolyNodeFeeEscrowV2", "2", V2 contract) and sets
 * `escrow_contract` to the V2 address so the cosigner routes to the V2 operator.
 *
 * @param clobSigner - The signer object (viem WalletClient, ethers Signer, or RouterSigner)
 * @param params - FeeAuth parameters
 * @returns Signed FeeAuthRequest ready for the cosigner
 */
export declare function signFeeAuth(clobSigner: any, params: {
    escrowOrderId: string;
    payer: string;
    signerAddress: string;
    feeAmount: bigint;
    deadline: number;
    nonce: number;
    affiliate?: string;
    affiliateShareBps?: number;
    exchangeVersion?: ExchangeVersion;
}): Promise<FeeAuthRequest>;
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