/**
 * Hook to check if an address supports ERC-1271 signature verification
 * ERC-1271 allows smart contracts to verify signatures, which is required for permit2
 * @param address - The address to check
 * @param chainId - The chain ID to check on
 * @returns Object with supportsERC1271 boolean and isLoading boolean
 */
export declare const useSupportsERC1271: (address?: string, chainId?: number) => {
    supportsERC1271: boolean;
    isLoading: boolean;
};
