Function tryUpdate

src/interaction/findCandlestick.ts:192–211

(
    seriesIndex: number,
    dataIndex: number,
    point: OHLCDataPoint,
    dx: number,
  )

  let bestDx = Number.POSITIVE_INFINITY;

  const tryUpdate = (
    seriesIndex: number,
    dataIndex: number,
    point: OHLCDataPoint,
    dx: number,
  ): void => {
    if (!Number.isFinite(dx)) return;
    if (dx < bestDx) {
      bestDx = dx;
      best = { seriesIndex, dataIndex, point };
      return;
    }
    if (dx === bestDx && best) {
      if (dataIndex < best.dataIndex) {
        best = { seriesIndex, dataIndex, point };
      } else if (dataIndex === best.dataIndex && seriesIndex < best.seriesIndex) {
        best = { seriesIndex, dataIndex, point };
      }
    }
  };

  const isBodyHitAt = (p: OHLCDataPoint): boolean => {
    const open = getOpen(p);