!== -1;\n  const sameWidthParity = referenceWidth % 2 === popperWidth % 2;\n  const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;\n\n  const horizontalToInteger = !shouldRound\n    ? noRound\n    : isVertical || isVariation || sameWidthParity\n    ? round\n    : floor;\n  const verticalToInteger = !shouldRound ? noRound : round;\n\n  return {\n    left: horizontalToInteger(\n      bothOddWidth && !isVariation && shouldRound\n        ? popper.left - 1\n        : popper.left\n ...