import { type Hash } from 'viem';
/**
 * Transfer Sei to an address
 * @param toAddress Recipient address
 * @param amount Amount to send in Sei
 * @param network Network name or chain ID
 * @returns Transaction hash
 * @throws Error if no private key is available
 */
export declare function transferSei(toAddress: string, amount: string, // in ether
network?: string): Promise<Hash>;
/**
 * Transfer ERC20 tokens to an address
 * @param tokenAddress Token contract address
 * @param toAddress Recipient address
 * @param amount Amount to send (in token units)
 * @param network Network name or chain ID
 * @returns Transaction details
 * @throws Error if no private key is available
 */
export declare function transferERC20(tokenAddress: string, toAddress: string, amount: string, network?: string): Promise<{
    txHash: Hash;
    amount: {
        raw: bigint;
        formatted: string;
    };
    token: {
        symbol: string;
        decimals: number;
    };
}>;
/**
 * Approve ERC20 token spending
 * @param tokenAddress Token contract address
 * @param spenderAddress Spender address
 * @param amount Amount to approve (in token units)
 * @param network Network name or chain ID
 * @returns Transaction details
 * @throws Error if no private key is available
 */
export declare function approveERC20(tokenAddress: string, spenderAddress: string, amount: string, network?: string): Promise<{
    txHash: Hash;
    amount: {
        raw: bigint;
        formatted: string;
    };
    token: {
        symbol: string;
        decimals: number;
    };
}>;
/**
 * Transfer an NFT (ERC721) to an address
 * @param tokenAddress NFT contract address
 * @param toAddress Recipient address
 * @param tokenId Token ID to transfer
 * @param network Network name or chain ID
 * @returns Transaction details
 * @throws Error if no private key is available
 */
export declare function transferERC721(tokenAddress: string, toAddress: string, tokenId: bigint, network?: string): Promise<{
    txHash: Hash;
    tokenId: string;
    token: {
        name: string;
        symbol: string;
    };
}>;
/**
 * Transfer ERC1155 tokens to an address
 * @param tokenAddress Token contract
 * @param toAddress Recipient address
 * @param tokenId Token ID to transfer
 * @param amount Amount to transfer
 * @param network Network name or chain ID
 * @returns Transaction details
 * @throws Error if no private key is available
 */
export declare function transferERC1155(tokenAddress: string, toAddress: string, tokenId: bigint, amount: string, network?: string): Promise<{
    txHash: Hash;
    tokenId: string;
    amount: string;
}>;