function fibonacciretracement(start, end) {
    let levels = [0, 23.6, 38.2, 50, 61.8, 78.6, 100, 127.2, 161.8, 261.8, 423.6];
    let retracements;
    if (start < end) {
        retracements = levels.map(function (level) {
            let calculated = end - Math.abs(start - end) * (level) / 100;
            return calculated > 0 ? calculated : 0;
        });
    }
    else {
        retracements = levels.map(function (level) {
            let calculated = end + Math.abs(start - end) * (level) / 100;
            return calculated > 0 ? calculated : 0;
        });
    }
    return retracements;
}
Calcaultes the fibonacci retracements for given start and end points

If calculating for up trend start should be low and end should be high and vice versa

returns an array of retracements level containing [0 , 23.6, 38.2, 50, 61.8, 78.6, 100, 127.2, 161.8, 261.8, 423.6]

@export
@param {number} start
@param {number} end
@returns {number[]}