/**
 * Minimal ABI encoding utilities for ERC-20, ERC-721 and ERC-1155 transfer
 * calldata.
 *
 * All functions return a hex string with `0x` prefix ready to be used as
 * transaction `data`.
 */
/**
 * Encodes the calldata for an ERC-20 `transfer(address to, uint256 amount)` call.
 *
 * @param to - Recipient address.
 * @param amount - Amount of tokens in the token's smallest unit (e.g. wei for 18-decimal tokens).
 * @returns Hex string with `0x` prefix.
 */
export declare function encodeErc20Transfer(to: string, amount: bigint): string;
/**
 * Encodes the calldata for an ERC-721
 * `safeTransferFrom(address from, address to, uint256 tokenId)` call.
 *
 * @param from - Current owner address.
 * @param to - Recipient address.
 * @param tokenId - The NFT token ID.
 * @returns Hex string with `0x` prefix.
 */
export declare function encodeErc721SafeTransferFrom(from: string, to: string, tokenId: bigint): string;
/**
 * Encodes the calldata for an ERC-1155
 * `safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes data)` call.
 *
 * The `data` parameter is always empty (`0x`).
 *
 * @param from - Current owner address.
 * @param to - Recipient address.
 * @param tokenId - The token ID.
 * @param amount - Number of tokens to transfer.
 * @returns Hex string with `0x` prefix.
 */
export declare function encodeErc1155SafeTransferFrom(from: string, to: string, tokenId: bigint, amount: bigint): string;