data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`],...