ExoScope Mean Reversion

const minGap = input('min_gap', 8, { min: 3, max: 30 });
const rsiPeriod = input('rsi_period', 14);
const bbPeriod = input('bb_period', 20, { min: 10, max: 50 });

const rsi = ta.rsi(close, rsiPeriod);
const bb = ta.bb(close, bbPeriod, 2);
const st = ta.stoch(high, low, close, 14, 3, 3);

let last = -minGap;
for (let i = bbPeriod; i < barCount; i++) {
  if (i - last < minGap) continue;
  if (bb.upper[i] === null || bb.lower[i] === null || rsi[i] === null) continue;
  const width = bb.upper[i] - bb.lower[i];
  if (width <= 0) continue;
  const pos = (close[i] - bb.lower[i]) / width;
  const k = st.k[i];
  const d = st.d[i];
  let buyScore = 0;
  let sellScore = 0;
  if (pos < 0.15) buyScore += 2;
  else if (pos < 0.25) buyScore += 1;
  if (pos > 0.85) sellScore += 2;
  else if (pos > 0.75) sellScore += 1;
  if (rsi[i] < 30) buyScore += 2;
  else if (rsi[i] < 40) buyScore += 1;
  if (rsi[i] > 70) sellScore += 2;
  else if (rsi[i] > 60) sellScore += 1;
  if (k !== null && d !== null) {
    if (k < 25 && k > d) buyScore += 1;
    if (k > 75 && k < d) sellScore += 1;
  }
  if (buyScore >= 3) {
    signal(i, 'buy', close[i], 'MR buy');
    last = i;
  } else if (sellScore >= 3) {
    signal(i, 'sell', close[i], 'MR sell');
    last = i;
  }
}