How To Compute Commodity Channel Index (CCI) using JavaScript?

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function calculateCCI(data, period) {
  let cciValues = [];

  for (let i = period - 1; i < data.length; i++) {
    let typicalPrice = (data[i].high + data[i].low + data[i].close) / 3;

    let sumTypicalPrice = 0;
    for (let j = i - (period - 1); j <= i; j++) {
      sumTypicalPrice += (data[j].high + data[j].low + data[j].close) / 3;
    }

    let smaTypicalPrice = sumTypicalPrice / period;

    let sumMeanDeviation = 0;
    for (let j = i - (period - 1); j <= i; j++) {
      let meanDeviation = Math.abs((data[j].high + data[j].low + data[j].close) / 3 - smaTypicalPrice);
      sumMeanDeviation += meanDeviation;
    }

    let meanDeviation = sumMeanDeviation / period;

    let cci = (typicalPrice - smaTypicalPrice) / (0.015 * meanDeviation);
    cciValues.push(cci);
  }

  return cciValues;
}

// Example data for testing
const data = [
  { high: 50, low: 45, close: 48 },
  { high: 55, low: 47, close: 52 },
  // Add more data points as needed
];

const period = 20;
const cciValues = calculateCCI(data, period);
console.log(cciValues);