import BigNumber from 'bignumber.js';
/**
 * @description Converts a number to a bigint in atomic units
 * don't use this to format inputs use parseDecimal instead
 *
 * @param quantity string | number | BigNumber
 * @param decimalPlaces
 * @returns bigint with atomic units
 *
 * @example
 * toBigInt('123456789', 0) // => 123456789n
 * toBigInt('123456789.000000000000000001', 18) // => 123456789000000000000000001n
 * toBigInt('1', 18) // => 1000000000000000000n
 */
export declare function toBigInt(quantity: string | number | BigNumber, decimalPlaces: number): bigint;
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