import JSBI from 'jsbi';
export type PortableBigInt = bigint | JSBI;
declare const BI: (a: number) => PortableBigInt;
export { BI as BigInt };
export declare const now: () => PortableBigInt, add: (a: PortableBigInt, b: PortableBigInt) => PortableBigInt, subtract: (a: PortableBigInt, b: PortableBigInt) => PortableBigInt, multiply: (a: PortableBigInt, b: PortableBigInt) => PortableBigInt, divide: (a: PortableBigInt, b: PortableBigInt) => PortableBigInt, signedRightShift: (a: PortableBigInt, b: PortableBigInt) => PortableBigInt, bitwiseAnd: (a: PortableBigInt, b: PortableBigInt) => PortableBigInt, greaterThan: (a: PortableBigInt, b: PortableBigInt) => boolean, lessThan: (a: PortableBigInt, b: PortableBigInt) => boolean, toNumber: (b: PortableBigInt) => number, isBigInt: (v: any) => v is PortableBigInt, zero: PortableBigInt;