/**
 * Custom positioning reference element.
 * @see https://floating-ui.com/docs/virtual-elements
 */

const sides = ['top', 'right', 'bottom', 'left'];
const alignments = ['start', 'end'];
const placements = /*#__PURE__*/sides.reduce((acc, side) => acc.concat(side, side + "-" + alignments[0], side + "-" + alignments[1]), []);
const min = Math.min;
const max = Math.max;
const oppositeSideMap = {
  left: 'right',
  right: 'left',
  bottom: 'top',
  top: 'bottom'
};
function clamp(start, value, end) {
  return max(start, min(value, end));
}
function evaluate(value, param) {
  return typeof value === 'function' ? value(param) : value;
}
function getSide(placement) {
  return placement.split('-')[0];
}
function getAlignment(placement) {
  return placement.split('-')[1];
}
function getOppositeAxis(axis) {
  return axis === 'x' ? 'y' : 'x';
}
function getAxisLength(axis) {
  return axis === 'y' ? 'height' : 'width';
}
function getSideAxis(placement) {
  const firstChar = placement[0];
  return firstChar === 't' || firstChar === 'b' ? 'y' : 'x';
}
function getAlignmentAxis(placement) {
  return getOppositeAxis(getSideAxis(placement));
}
function getAlignmentSides(placement, rects, rtl) {
  if (rtl === void 0) {
    rtl = false;
  }
  const alignment = getAlignment(placement);
  const alignmentAxis = getAlignmentAxis(placement);
  const length = getAxisLength(alignmentAxis);
  let mainAlignmentSide = alignmentAxis === 'x' ? alignment === (rtl ? 'end' : 'start') ? 'right' : 'left' : alignment === 'start' ? 'bottom' : 'top';
  if (rects.reference[length] > rects.floating[length]) {
    mainAlignmentSide = getOppositePlacement(mainAlignmentSide);
  }
  return [mainAlignmentSide, getOppositePlacement(mainAlignmentSide)];
}
function getExpandedPlacements(placement) {
  const oppositePlacement = getOppositePlacement(placement);
  return [getOppositeAlignmentPlacement(placement), oppositePlacement, getOppositeAlignmentPlacement(oppositePlacement)];
}
function getOppositeAlignmentPlacement(placement) {
  return placement.includes('start') ? placement.replace('start', 'end') : placement.replace('end', 'start');
}
const lrPlacement = ['left', 'right'];
const rlPlacement = ['right', 'left'];
const tbPlacement = ['top', 'bottom'];
const btPlacement = ['bottom', 'top'];
function getSideList(side, isStart, rtl) {
  switch (side) {
    case 'top':
    case 'bottom':
      if (rtl) return isStart ? rlPlacement : lrPlacement;
      return isStart ? lrPlacement : rlPlacement;
    case 'left':
    case 'right':
      return isStart ? tbPlacement : btPlacement;
    default:
      return [];
  }
}
function getOppositeAxisPlacements(placement, flipAlignment, direction, rtl) {
  const alignment = getAlignment(placement);
  let list = getSideList(getSide(placement), direction === 'start', rtl);
  if (alignment) {
    list = list.map(side => side + "-" + alignment);
    if (flipAlignment) {
      list = list.concat(list.map(getOppositeAlignmentPlacement));
    }
  }
  return list;
}
function getOppositePlacement(placement) {
  const side = getSide(placement);
  return oppositeSideMap[side] + placement.slice(side.length);
}
function expandPaddingObject(padding) {
  return {
    top: 0,
    right: 0,
    bottom: 0,
    left: 0,
    ...padding
  };
}
function getPaddingObject(padding) {
  return typeof padding !== 'number' ? expandPaddingObject(padding) : {
    top: padding,
    right: padding,
    bottom: padding,
    left: padding
  };
}
function rectToClientRect(rect) {
  const {
    x,
    y,
    width,
    height
  } = rect;
  return {
    width,
    height,
    top: y,
    left: x,
    right: x + width,
    bottom: y + height,
    x,
    y
  };
}

function computeCoordsFromPlacement(_ref, placement, rtl) {
  let {
    reference,
    floating
  } = _ref;
  const sideAxis = getSideAxis(placement);
  const alignmentAxis = getAlignmentAxis(placement);
  const alignLength = getAxisLength(alignmentAxis);
  const side = getSide(placement);
  const isVertical = sideAxis === 'y';
  const commonX = reference.x + reference.width / 2 - floating.width / 2;
  const commonY = reference.y + reference.height / 2 - floating.height / 2;
  const commonAlign = reference[alignLength] / 2 - floating[alignLength] / 2;
  let coords;
  switch (side) {
    case 'top':
      coords = {
        x: commonX,
        y: reference.y - floating.height
      };
      break;
    case 'bottom':
      coords = {
        x: commonX,
        y: reference.y + reference.height
      };
      break;
    case 'right':
      coords = {
        x: reference.x + reference.width,
        y: commonY
      };
      break;
    case 'left':
      coords = {
        x: reference.x - floating.width,
        y: commonY
      };
      break;
    default:
      coords = {
        x: reference.x,
        y: reference.y
      };
  }
  switch (getAlignment(placement)) {
    case 'start':
      coords[alignmentAxis] -= commonAlign * (rtl && isVertical ? -1 : 1);
      break;
    case 'end':
      coords[alignmentAxis] += commonAlign * (rtl && isVertical ? -1 : 1);
      break;
  }
  return coords;
}

/**
 * Resolves with an object of overflow side offsets that determine how much the
 * element is overflowing a given clipping boundary on each side.
 * - positive = overflowing the boundary by that number of pixels
 * - negative = how many pixels left before it will overflow
 * - 0 = lies flush with the boundary
 * @see https://floating-ui.com/docs/detectOverflow
 */
async function detectOverflow(state, options) {
  var _await$platform$isEle;
  if (options === void 0) {
    options = {};
  }
  const {
    x,
    y,
    platform,
    rects,
    elements,
    strategy
  } = state;
  const {
    boundary = 'clippingAncestors',
    rootBoundary = 'viewport',
    elementContext = 'floating',
    altBoundary = false,
    padding = 0
  } = evaluate(options, state);
  const paddingObject = getPaddingObject(padding);
  const altContext = elementContext === 'floating' ? 'reference' : 'floating';
  const element = elements[altBoundary ? altContext : elementContext];
  const clippingClientRect = rectToClientRect(await platform.getClippingRect({
    element: ((_await$platform$isEle = await (platform.isElement == null ? void 0 : platform.isElement(element))) != null ? _await$platform$isEle : true) ? element : element.contextElement || (await (platform.getDocumentElement == null ? void 0 : platform.getDocumentElement(elements.floating))),
    boundary,
    rootBoundary,
    strategy
  }));
  const rect = elementContext === 'floating' ? {
    x,
    y,
    width: rects.floating.width,
    height: rects.floating.height
  } : rects.reference;
  const offsetParent = await (platform.getOffsetParent == null ? void 0 : platform.getOffsetParent(elements.floating));
  const offsetScale = (await (platform.isElement == null ? void 0 : platform.isElement(offsetParent))) ? (await (platform.getScale == null ? void 0 : platform.getScale(offsetParent))) || {
    x: 1,
    y: 1
  } : {
    x: 1,
    y: 1
  };
  const elementClientRect = rectToClientRect(platform.convertOffsetParentRelativeRectToViewportRelativeRect ? await platform.convertOffsetParentRelativeRectToViewportRelativeRect({
    elements,
    rect,
    offsetParent,
    strategy
  }) : rect);
  return {
    top: (clippingClientRect.top - elementClientRect.top + paddingObject.top) / offsetScale.y,
    bottom: (elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom) / offsetScale.y,
    left: (clippingClientRect.left - elementClientRect.left + paddingObject.left) / offsetScale.x,
    right: (elementClientRect.right - clippingClientRect.right + paddingObject.right) / offsetScale.x
  };
}

// Maximum number of resets that can occur before bailing to avoid infinite reset loops.
const MAX_RESET_COUNT = 50;

/**
 * Computes the `x` and `y` coordinates that will place the floating element
 * next to a given reference element.
 *
 * This export does not have any `platform` interface logic. You will need to
 * write one for the platform you are using Floating UI with.
 */
const computePosition = async (reference, floating, config) => {
  const {
    placement = 'bottom',
    strategy = 'absolute',
    middleware = [],
    platform
  } = config;
  const platformWithDetectOverflow = platform.detectOverflow ? platform : {
    ...platform,
    detectOverflow
  };
  const rtl = await (platform.isRTL == null ? void 0 : platform.isRTL(floating));
  let rects = await platform.getElementRects({
    reference,
    floating,
    strategy
  });
  let {
    x,
    y
  } = computeCoordsFromPlacement(rects, placement, rtl);
  let statefulPlacement = placement;
  let resetCount = 0;
  const middlewareData = {};
  for (let i = 0; i < middleware.length; i++) {
    const currentMiddleware = middleware[i];
    if (!currentMiddleware) {
      continue;
    }
    const {
      name,
      fn
    } = currentMiddleware;
    const {
      x: nextX,
      y: nextY,
      data,
      reset
    } = await fn({
      x,
      y,
      initialPlacement: placement,
      placement: statefulPlacement,
      strategy,
      middlewareData,
      rects,
      platform: platformWithDetectOverflow,
      elements: {
        reference,
        floating
      }
    });
    x = nextX != null ? nextX : x;
    y = nextY != null ? nextY : y;
    middlewareData[name] = {
      ...middlewareData[name],
      ...data
    };
    if (reset && resetCount < MAX_RESET_COUNT) {
      resetCount++;
      if (typeof reset === 'object') {
        if (reset.placement) {
          statefulPlacement = reset.placement;
        }
        if (reset.rects) {
          rects = reset.rects === true ? await platform.getElementRects({
            reference,
            floating,
            strategy
          }) : reset.rects;
        }
        ({
          x,
          y
        } = computeCoordsFromPlacement(rects, statefulPlacement, rtl));
      }
      i = -1;
    }
  }
  return {
    x,
    y,
    placement: statefulPlacement,
    strategy,
    middlewareData
  };
};

/**
 * Provides data to position an inner element of the floating element so that it
 * appears centered to the reference element.
 * @see https://floating-ui.com/docs/arrow
 */
const arrow = options => ({
  name: 'arrow',
  options,
  async fn(state) {
    const {
      x,
      y,
      placement,
      rects,
      platform,
      elements,
      middlewareData
    } = state;
    // Since `element` is required, we don't Partial<> the type.
    const {
      element,
      padding = 0
    } = evaluate(options, state) || {};
    if (element == null) {
      return {};
    }
    const paddingObject = getPaddingObject(padding);
    const coords = {
      x,
      y
    };
    const axis = getAlignmentAxis(placement);
    const length = getAxisLength(axis);
    const arrowDimensions = await platform.getDimensions(element);
    const isYAxis = axis === 'y';
    const minProp = isYAxis ? 'top' : 'left';
    const maxProp = isYAxis ? 'bottom' : 'right';
    const clientProp = isYAxis ? 'clientHeight' : 'clientWidth';
    const endDiff = rects.reference[length] + rects.reference[axis] - coords[axis] - rects.floating[length];
    const startDiff = coords[axis] - rects.reference[axis];
    const arrowOffsetParent = await (platform.getOffsetParent == null ? void 0 : platform.getOffsetParent(element));
    let clientSize = arrowOffsetParent ? arrowOffsetParent[clientProp] : 0;

    // DOM platform can return `window` as the `offsetParent`.
    if (!clientSize || !(await (platform.isElement == null ? void 0 : platform.isElement(arrowOffsetParent)))) {
      clientSize = elements.floating[clientProp] || rects.floating[length];
    }
    const centerToReference = endDiff / 2 - startDiff / 2;

    // If the padding is large enough that it causes the arrow to no longer be
    // centered, modify the padding so that it is centered.
    const largestPossiblePadding = clientSize / 2 - arrowDimensions[length] / 2 - 1;
    const minPadding = min(paddingObject[minProp], largestPossiblePadding);
    const maxPadding = min(paddingObject[maxProp], largestPossiblePadding);

    // Make sure the arrow doesn't overflow the floating element if the center
    // point is outside the floating element's bounds.
    const min$1 = minPadding;
    const max = clientSize - arrowDimensions[length] - maxPadding;
    const center = clientSize / 2 - arrowDimensions[length] / 2 + centerToReference;
    const offset = clamp(min$1, center, max);

    // If the reference is small enough that the arrow's padding causes it to
    // to point to nothing for an aligned placement, adjust the offset of the
    // floating element itself. To ensure `shift()` continues to take action,
    // a single reset is performed when this is true.
    const shouldAddOffset = !middlewareData.arrow && getAlignment(placement) != null && center !== offset && rects.reference[length] / 2 - (center < min$1 ? minPadding : maxPadding) - arrowDimensions[length] / 2 < 0;
    const alignmentOffset = shouldAddOffset ? center < min$1 ? center - min$1 : center - max : 0;
    return {
      [axis]: coords[axis] + alignmentOffset,
      data: {
        [axis]: offset,
        centerOffset: center - offset - alignmentOffset,
        ...(shouldAddOffset && {
          alignmentOffset
        })
      },
      reset: shouldAddOffset
    };
  }
});

function getPlacementList(alignment, autoAlignment, allowedPlacements) {
  const allowedPlacementsSortedByAlignment = alignment ? [...allowedPlacements.filter(placement => getAlignment(placement) === alignment), ...allowedPlacements.filter(placement => getAlignment(placement) !== alignment)] : allowedPlacements.filter(placement => getSide(placement) === placement);
  return allowedPlacementsSortedByAlignment.filter(placement => {
    if (alignment) {
      return getAlignment(placement) === alignment || (autoAlignment ? getOppositeAlignmentPlacement(placement) !== placement : false);
    }
    return true;
  });
}
/**
 * Optimizes the visibility of the floating element by choosing the placement
 * that has the most space available automatically, without needing to specify a
 * preferred placement. Alternative to `flip`.
 * @see https://floating-ui.com/docs/autoPlacement
 */
const autoPlacement = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    name: 'autoPlacement',
    options,
    async fn(state) {
      var _middlewareData$autoP, _middlewareData$autoP2, _placementsThatFitOnE;
      const {
        rects,
        middlewareData,
        placement,
        platform,
        elements
      } = state;
      const {
        crossAxis = false,
        alignment,
        allowedPlacements = placements,
        autoAlignment = true,
        ...detectOverflowOptions
      } = evaluate(options, state);
      const placements$1 = alignment !== undefined || allowedPlacements === placements ? getPlacementList(alignment || null, autoAlignment, allowedPlacements) : allowedPlacements;
      const overflow = await platform.detectOverflow(state, detectOverflowOptions);
      const currentIndex = ((_middlewareData$autoP = middlewareData.autoPlacement) == null ? void 0 : _middlewareData$autoP.index) || 0;
      const currentPlacement = placements$1[currentIndex];
      if (currentPlacement == null) {
        return {};
      }
      const alignmentSides = getAlignmentSides(currentPlacement, rects, await (platform.isRTL == null ? void 0 : platform.isRTL(elements.floating)));

      // Make `computeCoords` start from the right place.
      if (placement !== currentPlacement) {
        return {
          reset: {
            placement: placements$1[0]
          }
        };
      }
      const currentOverflows = [overflow[getSide(currentPlacement)], overflow[alignmentSides[0]], overflow[alignmentSides[1]]];
      const allOverflows = [...(((_middlewareData$autoP2 = middlewareData.autoPlacement) == null ? void 0 : _middlewareData$autoP2.overflows) || []), {
        placement: currentPlacement,
        overflows: currentOverflows
      }];
      const nextPlacement = placements$1[currentIndex + 1];

      // There are more placements to check.
      if (nextPlacement) {
        return {
          data: {
            index: currentIndex + 1,
            overflows: allOverflows
          },
          reset: {
            placement: nextPlacement
          }
        };
      }
      const placementsSortedByMostSpace = allOverflows.map(d => {
        const alignment = getAlignment(d.placement);
        return [d.placement, alignment && crossAxis ?
        // Check along the mainAxis and main crossAxis side.
        d.overflows.slice(0, 2).reduce((acc, v) => acc + v, 0) :
        // Check only the mainAxis.
        d.overflows[0], d.overflows];
      }).sort((a, b) => a[1] - b[1]);
      const placementsThatFitOnEachSide = placementsSortedByMostSpace.filter(d => d[2].slice(0,
      // Aligned placements should not check their opposite crossAxis
      // side.
      getAlignment(d[0]) ? 2 : 3).every(v => v <= 0));
      const resetPlacement = ((_placementsThatFitOnE = placementsThatFitOnEachSide[0]) == null ? void 0 : _placementsThatFitOnE[0]) || placementsSortedByMostSpace[0][0];
      if (resetPlacement !== placement) {
        return {
          data: {
            index: currentIndex + 1,
            overflows: allOverflows
          },
          reset: {
            placement: resetPlacement
          }
        };
      }
      return {};
    }
  };
};

/**
 * Optimizes the visibility of the floating element by flipping the `placement`
 * in order to keep it in view when the preferred placement(s) will overflow the
 * clipping boundary. Alternative to `autoPlacement`.
 * @see https://floating-ui.com/docs/flip
 */
const flip = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    name: 'flip',
    options,
    async fn(state) {
      var _middlewareData$arrow, _middlewareData$flip;
      const {
        placement,
        middlewareData,
        rects,
        initialPlacement,
        platform,
        elements
      } = state;
      const {
        mainAxis: checkMainAxis = true,
        crossAxis: checkCrossAxis = true,
        fallbackPlacements: specifiedFallbackPlacements,
        fallbackStrategy = 'bestFit',
        fallbackAxisSideDirection = 'none',
        flipAlignment = true,
        ...detectOverflowOptions
      } = evaluate(options, state);

      // If a reset by the arrow was caused due to an alignment offset being
      // added, we should skip any logic now since `flip()` has already done its
      // work.
      // https://github.com/floating-ui/floating-ui/issues/2549#issuecomment-1719601643
      if ((_middlewareData$arrow = middlewareData.arrow) != null && _middlewareData$arrow.alignmentOffset) {
        return {};
      }
      const side = getSide(placement);
      const initialSideAxis = getSideAxis(initialPlacement);
      const isBasePlacement = getSide(initialPlacement) === initialPlacement;
      const rtl = await (platform.isRTL == null ? void 0 : platform.isRTL(elements.floating));
      const fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipAlignment ? [getOppositePlacement(initialPlacement)] : getExpandedPlacements(initialPlacement));
      const hasFallbackAxisSideDirection = fallbackAxisSideDirection !== 'none';
      if (!specifiedFallbackPlacements && hasFallbackAxisSideDirection) {
        fallbackPlacements.push(...getOppositeAxisPlacements(initialPlacement, flipAlignment, fallbackAxisSideDirection, rtl));
      }
      const placements = [initialPlacement, ...fallbackPlacements];
      const overflow = await platform.detectOverflow(state, detectOverflowOptions);
      const overflows = [];
      let overflowsData = ((_middlewareData$flip = middlewareData.flip) == null ? void 0 : _middlewareData$flip.overflows) || [];
      if (checkMainAxis) {
        overflows.push(overflow[side]);
      }
      if (checkCrossAxis) {
        const sides = getAlignmentSides(placement, rects, rtl);
        overflows.push(overflow[sides[0]], overflow[sides[1]]);
      }
      overflowsData = [...overflowsData, {
        placement,
        overflows
      }];

      // One or more sides is overflowing.
      if (!overflows.every(side => side <= 0)) {
        var _middlewareData$flip2, _overflowsData$filter;
        const nextIndex = (((_middlewareData$flip2 = middlewareData.flip) == null ? void 0 : _middlewareData$flip2.index) || 0) + 1;
        const nextPlacement = placements[nextIndex];
        if (nextPlacement) {
          const ignoreCrossAxisOverflow = checkCrossAxis === 'alignment' ? initialSideAxis !== getSideAxis(nextPlacement) : false;
          if (!ignoreCrossAxisOverflow ||
          // We leave the current main axis only if every placement on that axis
          // overflows the main axis.
          overflowsData.every(d => getSideAxis(d.placement) === initialSideAxis ? d.overflows[0] > 0 : true)) {
            // Try next placement and re-run the lifecycle.
            return {
              data: {
                index: nextIndex,
                overflows: overflowsData
              },
              reset: {
                placement: nextPlacement
              }
            };
          }
        }

        // First, find the candidates that fit on the mainAxis side of overflow,
        // then find the placement that fits the best on the main crossAxis side.
        let resetPlacement = (_overflowsData$filter = overflowsData.filter(d => d.overflows[0] <= 0).sort((a, b) => a.overflows[1] - b.overflows[1])[0]) == null ? void 0 : _overflowsData$filter.placement;

        // Otherwise fallback.
        if (!resetPlacement) {
          switch (fallbackStrategy) {
            case 'bestFit':
              {
                var _overflowsData$filter2;
                const placement = (_overflowsData$filter2 = overflowsData.filter(d => {
                  if (hasFallbackAxisSideDirection) {
                    const currentSideAxis = getSideAxis(d.placement);
                    return currentSideAxis === initialSideAxis ||
                    // Create a bias to the `y` side axis due to horizontal
                    // reading directions favoring greater width.
                    currentSideAxis === 'y';
                  }
                  return true;
                }).map(d => [d.placement, d.overflows.filter(overflow => overflow > 0).reduce((acc, overflow) => acc + overflow, 0)]).sort((a, b) => a[1] - b[1])[0]) == null ? void 0 : _overflowsData$filter2[0];
                if (placement) {
                  resetPlacement = placement;
                }
                break;
              }
            case 'initialPlacement':
              resetPlacement = initialPlacement;
              break;
          }
        }
        if (placement !== resetPlacement) {
          return {
            reset: {
              placement: resetPlacement
            }
          };
        }
      }
      return {};
    }
  };
};

function getSideOffsets(overflow, rect) {
  return {
    top: overflow.top - rect.height,
    right: overflow.right - rect.width,
    bottom: overflow.bottom - rect.height,
    left: overflow.left - rect.width
  };
}
function isAnySideFullyClipped(overflow) {
  return sides.some(side => overflow[side] >= 0);
}
/**
 * Provides data to hide the floating element in applicable situations, such as
 * when it is not in the same clipping context as the reference element.
 * @see https://floating-ui.com/docs/hide
 */
const hide = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    name: 'hide',
    options,
    async fn(state) {
      const {
        rects,
        platform
      } = state;
      const {
        strategy = 'referenceHidden',
        ...detectOverflowOptions
      } = evaluate(options, state);
      switch (strategy) {
        case 'referenceHidden':
          {
            const overflow = await platform.detectOverflow(state, {
              ...detectOverflowOptions,
              elementContext: 'reference'
            });
            const offsets = getSideOffsets(overflow, rects.reference);
            return {
              data: {
                referenceHiddenOffsets: offsets,
                referenceHidden: isAnySideFullyClipped(offsets)
              }
            };
          }
        case 'escaped':
          {
            const overflow = await platform.detectOverflow(state, {
              ...detectOverflowOptions,
              altBoundary: true
            });
            const offsets = getSideOffsets(overflow, rects.floating);
            return {
              data: {
                escapedOffsets: offsets,
                escaped: isAnySideFullyClipped(offsets)
              }
            };
          }
        default:
          {
            return {};
          }
      }
    }
  };
};

function getBoundingRect(rects) {
  const minX = min(...rects.map(rect => rect.left));
  const minY = min(...rects.map(rect => rect.top));
  const maxX = max(...rects.map(rect => rect.right));
  const maxY = max(...rects.map(rect => rect.bottom));
  return {
    x: minX,
    y: minY,
    width: maxX - minX,
    height: maxY - minY
  };
}
function getRectsByLine(rects) {
  const sortedRects = rects.slice().sort((a, b) => a.y - b.y);
  const groups = [];
  let prevRect = null;
  for (let i = 0; i < sortedRects.length; i++) {
    const rect = sortedRects[i];
    if (!prevRect || rect.y - prevRect.y > prevRect.height / 2) {
      groups.push([rect]);
    } else {
      groups[groups.length - 1].push(rect);
    }
    prevRect = rect;
  }
  return groups.map(rect => rectToClientRect(getBoundingRect(rect)));
}
/**
 * Provides improved positioning for inline reference elements that can span
 * over multiple lines, such as hyperlinks or range selections.
 * @see https://floating-ui.com/docs/inline
 */
const inline = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    name: 'inline',
    options,
    async fn(state) {
      const {
        placement,
        elements,
        rects,
        platform,
        strategy
      } = state;
      // A MouseEvent's client{X,Y} coords can be up to 2 pixels off a
      // ClientRect's bounds, despite the event listener being triggered. A
      // padding of 2 seems to handle this issue.
      const {
        padding = 2,
        x,
        y
      } = evaluate(options, state);
      const nativeClientRects = Array.from((await (platform.getClientRects == null ? void 0 : platform.getClientRects(elements.reference))) || []);
      const clientRects = getRectsByLine(nativeClientRects);
      const fallback = rectToClientRect(getBoundingRect(nativeClientRects));
      const paddingObject = getPaddingObject(padding);
      function getBoundingClientRect() {
        // There are two rects and they are disjoined.
        if (clientRects.length === 2 && clientRects[0].left > clientRects[1].right && x != null && y != null) {
          // Find the first rect in which the point is fully inside.
          return clientRects.find(rect => x > rect.left - paddingObject.left && x < rect.right + paddingObject.right && y > rect.top - paddingObject.top && y < rect.bottom + paddingObject.bottom) || fallback;
        }

        // There are 2 or more connected rects.
        if (clientRects.length >= 2) {
          if (getSideAxis(placement) === 'y') {
            const firstRect = clientRects[0];
            const lastRect = clientRects[clientRects.length - 1];
            const isTop = getSide(placement) === 'top';
            const top = firstRect.top;
            const bottom = lastRect.bottom;
            const left = isTop ? firstRect.left : lastRect.left;
            const right = isTop ? firstRect.right : lastRect.right;
            const width = right - left;
            const height = bottom - top;
            return {
              top,
              bottom,
              left,
              right,
              width,
              height,
              x: left,
              y: top
            };
          }
          const isLeftSide = getSide(placement) === 'left';
          const maxRight = max(...clientRects.map(rect => rect.right));
          const minLeft = min(...clientRects.map(rect => rect.left));
          const measureRects = clientRects.filter(rect => isLeftSide ? rect.left === minLeft : rect.right === maxRight);
          const top = measureRects[0].top;
          const bottom = measureRects[measureRects.length - 1].bottom;
          const left = minLeft;
          const right = maxRight;
          const width = right - left;
          const height = bottom - top;
          return {
            top,
            bottom,
            left,
            right,
            width,
            height,
            x: left,
            y: top
          };
        }
        return fallback;
      }
      const resetRects = await platform.getElementRects({
        reference: {
          getBoundingClientRect
        },
        floating: elements.floating,
        strategy
      });
      if (rects.reference.x !== resetRects.reference.x || rects.reference.y !== resetRects.reference.y || rects.reference.width !== resetRects.reference.width || rects.reference.height !== resetRects.reference.height) {
        return {
          reset: {
            rects: resetRects
          }
        };
      }
      return {};
    }
  };
};

const originSides = /*#__PURE__*/new Set(['left', 'top']);

// For type backwards-compatibility, the `OffsetOptions` type was also
// Derivable.

async function convertValueToCoords(state, options) {
  const {
    placement,
    platform,
    elements
  } = state;
  const rtl = await (platform.isRTL == null ? void 0 : platform.isRTL(elements.floating));
  const side = getSide(placement);
  const alignment = getAlignment(placement);
  const isVertical = getSideAxis(placement) === 'y';
  const mainAxisMulti = originSides.has(side) ? -1 : 1;
  const crossAxisMulti = rtl && isVertical ? -1 : 1;
  const rawValue = evaluate(options, state);

  // eslint-disable-next-line prefer-const
  let {
    mainAxis,
    crossAxis,
    alignmentAxis
  } = typeof rawValue === 'number' ? {
    mainAxis: rawValue,
    crossAxis: 0,
    alignmentAxis: null
  } : {
    mainAxis: rawValue.mainAxis || 0,
    crossAxis: rawValue.crossAxis || 0,
    alignmentAxis: rawValue.alignmentAxis
  };
  if (alignment && typeof alignmentAxis === 'number') {
    crossAxis = alignment === 'end' ? alignmentAxis * -1 : alignmentAxis;
  }
  return isVertical ? {
    x: crossAxis * crossAxisMulti,
    y: mainAxis * mainAxisMulti
  } : {
    x: mainAxis * mainAxisMulti,
    y: crossAxis * crossAxisMulti
  };
}

/**
 * Modifies the placement by translating the floating element along the
 * specified axes.
 * A number (shorthand for `mainAxis` or distance), or an axes configuration
 * object may be passed.
 * @see https://floating-ui.com/docs/offset
 */
const offset = function (options) {
  if (options === void 0) {
    options = 0;
  }
  return {
    name: 'offset',
    options,
    async fn(state) {
      var _middlewareData$offse, _middlewareData$arrow;
      const {
        x,
        y,
        placement,
        middlewareData
      } = state;
      const diffCoords = await convertValueToCoords(state, options);

      // If the placement is the same and the arrow caused an alignment offset
      // then we don't need to change the positioning coordinates.
      if (placement === ((_middlewareData$offse = middlewareData.offset) == null ? void 0 : _middlewareData$offse.placement) && (_middlewareData$arrow = middlewareData.arrow) != null && _middlewareData$arrow.alignmentOffset) {
        return {};
      }
      return {
        x: x + diffCoords.x,
        y: y + diffCoords.y,
        data: {
          ...diffCoords,
          placement
        }
      };
    }
  };
};

/**
 * Optimizes the visibility of the floating element by shifting it in order to
 * keep it in view when it will overflow the clipping boundary.
 * @see https://floating-ui.com/docs/shift
 */
const shift = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    name: 'shift',
    options,
    async fn(state) {
      const {
        x,
        y,
        placement,
        platform
      } = state;
      const {
        mainAxis: checkMainAxis = true,
        crossAxis: checkCrossAxis = false,
        limiter = {
          fn: _ref => {
            let {
              x,
              y
            } = _ref;
            return {
              x,
              y
            };
          }
        },
        ...detectOverflowOptions
      } = evaluate(options, state);
      const coords = {
        x,
        y
      };
      const overflow = await platform.detectOverflow(state, detectOverflowOptions);
      const crossAxis = getSideAxis(getSide(placement));
      const mainAxis = getOppositeAxis(crossAxis);
      let mainAxisCoord = coords[mainAxis];
      let crossAxisCoord = coords[crossAxis];
      if (checkMainAxis) {
        const minSide = mainAxis === 'y' ? 'top' : 'left';
        const maxSide = mainAxis === 'y' ? 'bottom' : 'right';
        const min = mainAxisCoord + overflow[minSide];
        const max = mainAxisCoord - overflow[maxSide];
        mainAxisCoord = clamp(min, mainAxisCoord, max);
      }
      if (checkCrossAxis) {
        const minSide = crossAxis === 'y' ? 'top' : 'left';
        const maxSide = crossAxis === 'y' ? 'bottom' : 'right';
        const min = crossAxisCoord + overflow[minSide];
        const max = crossAxisCoord - overflow[maxSide];
        crossAxisCoord = clamp(min, crossAxisCoord, max);
      }
      const limitedCoords = limiter.fn({
        ...state,
        [mainAxis]: mainAxisCoord,
        [crossAxis]: crossAxisCoord
      });
      return {
        ...limitedCoords,
        data: {
          x: limitedCoords.x - x,
          y: limitedCoords.y - y,
          enabled: {
            [mainAxis]: checkMainAxis,
            [crossAxis]: checkCrossAxis
          }
        }
      };
    }
  };
};
/**
 * Built-in `limiter` that will stop `shift()` at a certain point.
 */
const limitShift = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    options,
    fn(state) {
      const {
        x,
        y,
        placement,
        rects,
        middlewareData
      } = state;
      const {
        offset = 0,
        mainAxis: checkMainAxis = true,
        crossAxis: checkCrossAxis = true
      } = evaluate(options, state);
      const coords = {
        x,
        y
      };
      const crossAxis = getSideAxis(placement);
      const mainAxis = getOppositeAxis(crossAxis);
      let mainAxisCoord = coords[mainAxis];
      let crossAxisCoord = coords[crossAxis];
      const rawOffset = evaluate(offset, state);
      const computedOffset = typeof rawOffset === 'number' ? {
        mainAxis: rawOffset,
        crossAxis: 0
      } : {
        mainAxis: 0,
        crossAxis: 0,
        ...rawOffset
      };
      if (checkMainAxis) {
        const len = mainAxis === 'y' ? 'height' : 'width';
        const limitMin = rects.reference[mainAxis] - rects.floating[len] + computedOffset.mainAxis;
        const limitMax = rects.reference[mainAxis] + rects.reference[len] - computedOffset.mainAxis;
        if (mainAxisCoord < limitMin) {
          mainAxisCoord = limitMin;
        } else if (mainAxisCoord > limitMax) {
          mainAxisCoord = limitMax;
        }
      }
      if (checkCrossAxis) {
        var _middlewareData$offse, _middlewareData$offse2;
        const len = mainAxis === 'y' ? 'width' : 'height';
        const isOriginSide = originSides.has(getSide(placement));
        const limitMin = rects.reference[crossAxis] - rects.floating[len] + (isOriginSide ? ((_middlewareData$offse = middlewareData.offset) == null ? void 0 : _middlewareData$offse[crossAxis]) || 0 : 0) + (isOriginSide ? 0 : computedOffset.crossAxis);
        const limitMax = rects.reference[crossAxis] + rects.reference[len] + (isOriginSide ? 0 : ((_middlewareData$offse2 = middlewareData.offset) == null ? void 0 : _middlewareData$offse2[crossAxis]) || 0) - (isOriginSide ? computedOffset.crossAxis : 0);
        if (crossAxisCoord < limitMin) {
          crossAxisCoord = limitMin;
        } else if (crossAxisCoord > limitMax) {
          crossAxisCoord = limitMax;
        }
      }
      return {
        [mainAxis]: mainAxisCoord,
        [crossAxis]: crossAxisCoord
      };
    }
  };
};

/**
 * Provides data that allows you to change the size of the floating element —
 * for instance, prevent it from overflowing the clipping boundary or match the
 * width of the reference element.
 * @see https://floating-ui.com/docs/size
 */
const size = function (options) {
  if (options === void 0) {
    options = {};
  }
  return {
    name: 'size',
    options,
    async fn(state) {
      var _state$middlewareData, _state$middlewareData2;
      const {
        placement,
        rects,
        platform,
        elements
      } = state;
      const {
        apply = () => {},
        ...detectOverflowOptions
      } = evaluate(options, state);
      const overflow = await platform.detectOverflow(state, detectOverflowOptions);
      const side = getSide(placement);
      const alignment = getAlignment(placement);
      const isYAxis = getSideAxis(placement) === 'y';
      const {
        width,
        height
      } = rects.floating;
      let heightSide;
      let widthSide;
      if (side === 'top' || side === 'bottom') {
        heightSide = side;
        widthSide = alignment === ((await (platform.isRTL == null ? void 0 : platform.isRTL(elements.floating))) ? 'start' : 'end') ? 'left' : 'right';
      } else {
        widthSide = side;
        heightSide = alignment === 'end' ? 'top' : 'bottom';
      }
      const maximumClippingHeight = height - overflow.top - overflow.bottom;
      const maximumClippingWidth = width - overflow.left - overflow.right;
      const overflowAvailableHeight = min(height - overflow[heightSide], maximumClippingHeight);
      const overflowAvailableWidth = min(width - overflow[widthSide], maximumClippingWidth);
      const noShift = !state.middlewareData.shift;
      let availableHeight = overflowAvailableHeight;
      let availableWidth = overflowAvailableWidth;
      if ((_state$middlewareData = state.middlewareData.shift) != null && _state$middlewareData.enabled.x) {
        availableWidth = maximumClippingWidth;
      }
      if ((_state$middlewareData2 = state.middlewareData.shift) != null && _state$middlewareData2.enabled.y) {
        availableHeight = maximumClippingHeight;
      }
      if (noShift && !alignment) {
        const xMin = max(overflow.left, 0);
        const xMax = max(overflow.right, 0);
        const yMin = max(overflow.top, 0);
        const yMax = max(overflow.bottom, 0);
        if (isYAxis) {
          availableWidth = width - 2 * (xMin !== 0 || xMax !== 0 ? xMin + xMax : max(overflow.left, overflow.right));
        } else {
          availableHeight = height - 2 * (yMin !== 0 || yMax !== 0 ? yMin + yMax : max(overflow.top, overflow.bottom));
        }
      }
      await apply({
        ...state,
        availableWidth,
        availableHeight
      });
      const nextDimensions = await platform.getDimensions(elements.floating);
      if (width !== nextDimensions.width || height !== nextDimensions.height) {
        return {
          reset: {
            rects: true
          }
        };
      }
      return {};
    }
  };
};

export { arrow, autoPlacement, computePosition, detectOverflow, flip, hide, inline, limitShift, offset, rectToClientRect, shift, size };
