in static/assets/js/bootstrap.bundle.js [3402:3426]
function shift(data) {
var placement = data.placement;
var basePlacement = placement.split('-')[0];
var shiftvariation = placement.split('-')[1];
// if shift shiftvariation is specified, run the modifier
if (shiftvariation) {
var _data$offsets = data.offsets,
reference = _data$offsets.reference,
popper = _data$offsets.popper;
var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
var side = isVertical ? 'left' : 'top';
var measurement = isVertical ? 'width' : 'height';
var shiftOffsets = {
start: defineProperty({}, side, reference[side]),
end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
};
data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
}
return data;
}