How To Compute Williams %R in JavaScript?

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function calculateWilliamsR(prices, period) {
    let williamsR = [];

    for (let i = period - 1; i < prices.length; i++) {
        let highestHigh = Math.max(...prices.slice(i - period + 1, i + 1));
        let lowestLow = Math.min(...prices.slice(i - period + 1, i + 1));

        let currentPrice = prices[i];
        let williamsValue = ((highestHigh - currentPrice) / (highestHigh - lowestLow)) * -100;

        williamsR.push(williamsValue);
    }

    return williamsR;
}

// Example usage
let prices = [10, 12, 15, 14, 16, 13, 11, 10];
let period = 5;

let williamsRValues = calculateWilliamsR(prices, period);
console.log(williamsRValues);