import { BigNumber } from 'ethers';
import { Decimal } from 'decimal.js';
export declare const ZERO_DEC: Decimal;
export declare const ONE_DEC: Decimal;
export declare const TWO_DEC: Decimal;
export declare const SECONDS_PER_YEAR: number;
/** *************************
 Support functions
 *************************** */
/**
 * @param { BigNumber | string } multiplicant
 * @param { BigNumber | string } multiplier
 * @param { string } precisionDifference  // Difference between multiplicant and multiplier precision (eg. wei vs ray '1e-27' )
 * @returns { string } in decimal precision of the multiplicant
 */
export declare const mulDecimal: (multiplicant: BigNumber | string, multiplier: BigNumber | string, precisionDifference?: string) => string;
/**
 * @param  { BigNumber | string } numerator
 * @param { BigNumber | string } divisor
 * @param { BigNumber | string } precisionDifference // Difference between multiplicant and mulitplier precision (eg. wei vs ray '1e-27' )
 * @returns { string } in decimal precision of the numerator
 */
export declare const divDecimal: (numerator: BigNumber | string, divisor: BigNumber | string, precisionDifference?: string) => string;
/**
 * @param { BigNumber | string } value
 * @returns { string }
 */
export declare const floorDecimal: (value: BigNumber | string) => string;
/**
 * @param { Decimal } value
 * @returns { BigNumber }
 */
export declare const toBn: (value: Decimal) => BigNumber;
/**
 * @param { BigNumber | string } to unix time
 * @param { BigNumber | string } from  unix time *optional* default: now
 * @returns { string } as number seconds 'from' -> 'to'
 */
export declare const secondsToFrom: (to: BigNumber | string, from?: BigNumber | string) => string;
/** *************************
 YieldSpace functions
 *************************** */
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } totalSupply
 * @param { BigNumber | string } base
 * @returns {[BigNumber, BigNumber]}
 *
 * https://www.desmos.com/calculator/mllhtohxfx
 */
export declare function mint(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, totalSupply: BigNumber | string, mainTokenIn: BigNumber | string): [BigNumber, BigNumber];
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } totalSupply
 * @param lpTokens { BigNumber | string }
 * @returns {[BigNumber, BigNumber]}
 *
 * https://www.desmos.com/calculator/ubsalzunpo
 */
export declare function burn(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, totalSupply: BigNumber | string, lpTokens: BigNumber | string): [BigNumber, BigNumber];
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalanceVirtual
 * @param { BigNumber | string } fyTokenBalanceReal
 * @param { BigNumber | string } totalSupply
 * @param { BigNumber | string } fyToken
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @returns {[BigNumber, BigNumber]}
 */
export declare function mintWithBase(baseBalance: BigNumber | string, fyTokenBalanceVirtual: BigNumber | string, fyTokenBalanceReal: BigNumber | string, supply: BigNumber | string, fyToken: BigNumber | string, timeTillMaturity: BigNumber | string, scaleFactor: BigNumber | string): [BigNumber, BigNumber];
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalanceVirtual
 * @param { BigNumber | string } fyTokenBalanceReal
 * @param { BigNumber | string } totalSupply
 * @param { BigNumber | string } lpTokens
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @returns { BigNumber }
 */
export declare function burnForBase(baseBalance: BigNumber, fyTokenBalanceVirtual: BigNumber, fyTokenBalanceReal: BigNumber, supply: BigNumber, lpTokens: BigNumber, timeTillMaturity: BigNumber, scaleFactor: BigNumber | string): BigNumber;
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } base
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @param { boolean } withNoFee
 * @returns { BigNumber }
 */
export declare function sellBase(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, base: BigNumber | string, timeTillMaturity: BigNumber | string, scaleFactor: BigNumber | string, withNoFee?: boolean): BigNumber;
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } fyToken
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @param { boolean } withNoFee
 * @returns { BigNumber }
 */
export declare function sellFYToken(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, fyToken: BigNumber | string, timeTillMaturity: BigNumber | string, scaleFactor: BigNumber | string, withNoFee?: boolean): BigNumber;
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } base
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @param { boolean } withNoFee
 * @returns { BigNumber }
 */
export declare function buyBase(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, base: BigNumber | string, timeTillMaturity: BigNumber | string, scaleFactor: BigNumber | string, withNoFee?: boolean): BigNumber;
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } fyToken
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @param { boolean } withNoFee
 * @returns { BigNumber }
 */
export declare function buyFYToken(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, fyToken: BigNumber | string, timeTillMaturity: BigNumber | string, scaleFactor: BigNumber | string, withNoFee?: boolean): BigNumber;
/**
 * @param { BigNumber | string } baseBalance
 * @param { BigNumber | string } fyTokenBalance
 * @param { BigNumber | string } fyToken
 * @param { BigNumber | string } timeTillMaturity
 * @param { BigNumber | string } scaleFactor
 * @returns { BigNumber }
 */
export declare function getFee(baseBalance: BigNumber | string, fyTokenBalance: BigNumber | string, fyToken: BigNumber | string, timeTillMaturity: BigNumber | string, scaleFactor: BigNumber | string): BigNumber;
export declare function fyDaiForMint(baseBalance: BigNumber | string, fyDaiRealBalance: BigNumber | string, fyDaiVirtualBalance: BigNumber | string, base: BigNumber | string, timeTillMaturity: BigNumber | string): string;
/**
   * Split a certain amount of X liquidity into its two componetnts (eg. base and fyToken)
   * @param { BigNumber } xBalance // eg. base balance
   * @param { BigNumber } yBalance // eg. fyToken balance
   * @param {BigNumber} xAmount // amount to split in wei
   * @returns  [ BigNumber, BigNumber ] returns an array of [base, fyToken]
   */
export declare const splitLiquidity: (xBalance: BigNumber | string, yBalance: BigNumber | string, xAmount: BigNumber | string) => [string, string];
/**
   * Calculate Slippage
   * @param { BigNumber } value
   * @param { BigNumber } slippage optional: defaults to 0.005 (0.5%)
   * @param { number } minimise optional: whether the resutl should be a minimum or maximum (default max)
   * @returns { string } human readable string
   */
export declare const calculateSlippage: (value: BigNumber | string, slippage?: BigNumber | string, minimise?: boolean) => string;
/**
   * Calculate Annualised Yield Rate
   * @param { BigNumber | string } rate // current [base] price per unit y[base]
   * @param { BigNumber | string } amount // y[base] amount at maturity
   * @param { number } maturity  // date of maturity
   * @param { number } fromDate // ***optional*** start date - defaults to now()
   * @returns { string | undefined } human readable string
   */
export declare const calculateAPR: (tradeValue: BigNumber | string, amount: BigNumber | string, maturity: number, fromDate?: number) => string | undefined;
/**
   * Calculates the collateralization ratio
   * based on the collat amount and value and debt value.
   * @param { BigNumber | string } collateralAmount  amount of collateral ( in wei)
   * @param { BigNumber | string } collateralPrice price of collateral (in USD)
   * @param { BigNumber | string } debtValue value of base debt (in USD)
   * @param {boolean} asPercent OPTIONAL: flag to return ratio as a percentage
   * @returns { string | undefined }
   */
export declare const collateralizationRatio: (collateralAmount: BigNumber | string, collateralPrice: BigNumber | string, debtValue: BigNumber | string, asPercent?: boolean) => string | undefined;
/**
   * Calcualtes the amount (base, or other variant) that can be borrowed based on
   * an amount of collateral (ETH, or other), and collateral price.
   *
   * @param {BigNumber | string} collateralAmount amount of collateral
   * @param {BigNumber | string} collateralPrice price of unit collateral (in currency x)
   * @param {BigNumber | string} debtValue value of debt (in currency x)
   * @param {BigNumber | string} liquidationRatio  OPTIONAL: 1.5 (150%) as default
   *
   * @returns {string}
   */
export declare const borrowingPower: (collateralAmount: BigNumber | string, collateralPrice: BigNumber | string, debtValue: BigNumber | string, liquidationRatio?: string) => string;