export declare const ETH_NATIVE_TOKEN_ADDRESS = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE";
export declare const isSameAddress: (addr1?: string | null | undefined, addr2?: string | null | undefined) => boolean;
export declare const handleNativeToken: (tokenAddr: string) => string;
export declare const isNativeToken: (tokenAddr?: string | undefined) => boolean;
interface TokenParams {
    fromToken: string;
    toToken: string;
}
export declare const handleParams: <T extends TokenParams>(params: T) => T;
export {};