interface ERC20InfoType {
    symbol: string;
    decimals: number;
}
export declare const tokenFetchHandler: (contract: string, type: string, category: string, chainInfo: string, setUnit: (value: React.SetStateAction<string>) => void, setDecimals: (value: React.SetStateAction<number>) => void, tokenId: number) => Promise<[boolean, string]>;
export declare const fetchERC20Info: (contractAddress: string, chainId: number) => Promise<[boolean, ERC20InfoType]>;
export declare const fetchERC721nfo: (contractAddress: string, chainId: number) => Promise<[boolean, string]>;
export declare const fetchERC1155Info: (contractAddress: string, chainId: number, tokenId: number) => Promise<[boolean, string]>;
export {};