import { BigNumber } from '@ethersproject/bignumber';
import { Contract } from '@ethersproject/contracts';
import { JsonRpcSigner, Web3Provider } from '@ethersproject/providers';
import { JSBI, Percent, Token, TokenAmount } from '@ubeswap/sdk';
import { IUniswapV2Router02, UbeswapMoolaRouter } from '../generated/index';
import { TokenAddressMap } from '../state/lists/hooks';
export declare function isAddress(value: any): string | false;
export declare function shortenAddress(address: string, chars?: number): string;
export declare function calculateGasMargin(value: BigNumber): BigNumber;
export declare function basisPointsToPercent(num: number): Percent;
export declare function calculateSlippageAmount(value: TokenAmount, slippage: number): [JSBI, JSBI];
export declare function getSigner(library: Web3Provider, account: string): JsonRpcSigner;
export declare function getProviderOrSigner(library: Web3Provider, account?: string): Web3Provider | JsonRpcSigner;
export declare function getContract(address: string, ABI: any, library: Web3Provider, account?: string): Contract;
export declare function getRouterContract(_: number, library: Web3Provider, account?: string): IUniswapV2Router02;
export declare function getMoolaRouterContract(_: number, library: Web3Provider, account?: string): UbeswapMoolaRouter;
export declare function escapeRegExp(string: string): string;
export declare function isTokenOnList(defaultTokens: TokenAddressMap, currency?: Token): boolean;