Calculate compound interest with regular deposits and daily compounding period

this-is-it.js

const calculateCompoundInterest = ({
  initialDeposit,
  regularDeposit,
  investmentInYears = 1,
  depositFrequency = 12,
  interestRate,
  compoundPeriodsPerYear = 365
}) => {
  // https://www.vertex42.com/Calculators/compound-interest-calculator.html#rate-per-period

  interestRate = interestRate / 100;

  const totalCompoundingPeriods = depositFrequency * investmentInYears;
  const rate =
    Math.pow(
      1 + interestRate / compoundPeriodsPerYear,
      compoundPeriodsPerYear / depositFrequency
    ) - 1;
  const futureValue =
    initialDeposit * Math.pow(1 + rate, totalCompoundingPeriods) +
    regularDeposit * ((Math.pow(1 + rate, totalCompoundingPeriods) - 1) / rate);

  return {
    futureValue,
    interest:
      futureValue -
      initialDeposit -
      regularDeposit * depositFrequency * investmentInYears,
    totalDeposit:
      initialDeposit + regularDeposit * depositFrequency * investmentInYears
  };
};