feature: vor und nachteile

praesentation/node_modules/@floating-ui/dom/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Floating UI contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

praesentation/node_modules/@floating-ui/dom/README.md

@@ -0,0 +1,4 @@
+# @floating-ui/dom
+
+This is the library to use Floating UI on the web, wrapping `@floating-ui/core`
+with DOM interface logic.

praesentation/node_modules/@floating-ui/dom/dist/floating-ui.dom.browser.mjs

@@ -0,0 +1,635 @@
+import { rectToClientRect, computePosition as computePosition$1 } from '@floating-ui/core';
+export { arrow, autoPlacement, detectOverflow, flip, hide, inline, limitShift, offset, shift, size } from '@floating-ui/core';
+
+function getWindow(node) {
+  var _node$ownerDocument;
+  return ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.defaultView) || window;
+}
+
+function getComputedStyle$1(element) {
+  return getWindow(element).getComputedStyle(element);
+}
+
+const min = Math.min;
+const max = Math.max;
+const round = Math.round;
+
+function getCssDimensions(element) {
+  const css = getComputedStyle$1(element);
+  let width = parseFloat(css.width);
+  let height = parseFloat(css.height);
+  const offsetWidth = element.offsetWidth;
+  const offsetHeight = element.offsetHeight;
+  const shouldFallback = round(width) !== offsetWidth || round(height) !== offsetHeight;
+  if (shouldFallback) {
+    width = offsetWidth;
+    height = offsetHeight;
+  }
+  return {
+    width,
+    height,
+    fallback: shouldFallback
+  };
+}
+
+function getNodeName(node) {
+  return isNode(node) ? (node.nodeName || '').toLowerCase() : '';
+}
+
+let uaString;
+function getUAString() {
+  if (uaString) {
+    return uaString;
+  }
+  const uaData = navigator.userAgentData;
+  if (uaData && Array.isArray(uaData.brands)) {
+    uaString = uaData.brands.map(item => item.brand + "/" + item.version).join(' ');
+    return uaString;
+  }
+  return navigator.userAgent;
+}
+
+function isHTMLElement(value) {
+  return value instanceof getWindow(value).HTMLElement;
+}
+function isElement(value) {
+  return value instanceof getWindow(value).Element;
+}
+function isNode(value) {
+  return value instanceof getWindow(value).Node;
+}
+function isShadowRoot(node) {
+  // Browsers without `ShadowRoot` support.
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+  const OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+function isOverflowElement(element) {
+  const {
+    overflow,
+    overflowX,
+    overflowY,
+    display
+  } = getComputedStyle$1(element);
+  return /auto|scroll|overlay|hidden|clip/.test(overflow + overflowY + overflowX) && !['inline', 'contents'].includes(display);
+}
+function isTableElement(element) {
+  return ['table', 'td', 'th'].includes(getNodeName(element));
+}
+function isContainingBlock(element) {
+  // TODO: Try to use feature detection here instead.
+  const isFirefox = /firefox/i.test(getUAString());
+  const css = getComputedStyle$1(element);
+  const backdropFilter = css.backdropFilter || css.WebkitBackdropFilter;
+
+  // This is non-exhaustive but covers the most common CSS properties that
+  // create a containing block.
+  // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+  return css.transform !== 'none' || css.perspective !== 'none' || (backdropFilter ? backdropFilter !== 'none' : false) || isFirefox && css.willChange === 'filter' || isFirefox && (css.filter ? css.filter !== 'none' : false) || ['transform', 'perspective'].some(value => css.willChange.includes(value)) || ['paint', 'layout', 'strict', 'content'].some(value => {
+    // Add type check for old browsers.
+    const contain = css.contain;
+    return contain != null ? contain.includes(value) : false;
+  });
+}
+function isLayoutViewport() {
+  // TODO: Try to use feature detection here instead. Feature detection for
+  // this can fail in various ways, making the userAgent check the most:
+  // reliable:
+  // • Always-visible scrollbar or not
+  // • Width of <html>
+
+  // Not Safari.
+  return !/^((?!chrome|android).)*safari/i.test(getUAString());
+}
+function isLastTraversableNode(node) {
+  return ['html', 'body', '#document'].includes(getNodeName(node));
+}
+
+function unwrapElement(element) {
+  return !isElement(element) ? element.contextElement : element;
+}
+
+const FALLBACK_SCALE = {
+  x: 1,
+  y: 1
+};
+function getScale(element) {
+  const domElement = unwrapElement(element);
+  if (!isHTMLElement(domElement)) {
+    return FALLBACK_SCALE;
+  }
+  const rect = domElement.getBoundingClientRect();
+  const {
+    width,
+    height,
+    fallback
+  } = getCssDimensions(domElement);
+  let x = (fallback ? round(rect.width) : rect.width) / width;
+  let y = (fallback ? round(rect.height) : rect.height) / height;
+
+  // 0, NaN, or Infinity should always fallback to 1.
+
+  if (!x || !Number.isFinite(x)) {
+    x = 1;
+  }
+  if (!y || !Number.isFinite(y)) {
+    y = 1;
+  }
+  return {
+    x,
+    y
+  };
+}
+
+function getBoundingClientRect(element, includeScale, isFixedStrategy, offsetParent) {
+  var _win$visualViewport, _win$visualViewport2;
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+  if (isFixedStrategy === void 0) {
+    isFixedStrategy = false;
+  }
+  const clientRect = element.getBoundingClientRect();
+  const domElement = unwrapElement(element);
+  let scale = FALLBACK_SCALE;
+  if (includeScale) {
+    if (offsetParent) {
+      if (isElement(offsetParent)) {
+        scale = getScale(offsetParent);
+      }
+    } else {
+      scale = getScale(element);
+    }
+  }
+  const win = domElement ? getWindow(domElement) : window;
+  const addVisualOffsets = !isLayoutViewport() && isFixedStrategy;
+  let x = (clientRect.left + (addVisualOffsets ? ((_win$visualViewport = win.visualViewport) == null ? void 0 : _win$visualViewport.offsetLeft) || 0 : 0)) / scale.x;
+  let y = (clientRect.top + (addVisualOffsets ? ((_win$visualViewport2 = win.visualViewport) == null ? void 0 : _win$visualViewport2.offsetTop) || 0 : 0)) / scale.y;
+  let width = clientRect.width / scale.x;
+  let height = clientRect.height / scale.y;
+  if (domElement) {
+    const win = getWindow(domElement);
+    const offsetWin = offsetParent && isElement(offsetParent) ? getWindow(offsetParent) : offsetParent;
+    let currentIFrame = win.frameElement;
+    while (currentIFrame && offsetParent && offsetWin !== win) {
+      const iframeScale = getScale(currentIFrame);
+      const iframeRect = currentIFrame.getBoundingClientRect();
+      const css = getComputedStyle(currentIFrame);
+      iframeRect.x += (currentIFrame.clientLeft + parseFloat(css.paddingLeft)) * iframeScale.x;
+      iframeRect.y += (currentIFrame.clientTop + parseFloat(css.paddingTop)) * iframeScale.y;
+      x *= iframeScale.x;
+      y *= iframeScale.y;
+      width *= iframeScale.x;
+      height *= iframeScale.y;
+      x += iframeRect.x;
+      y += iframeRect.y;
+      currentIFrame = getWindow(currentIFrame).frameElement;
+    }
+  }
+  return {
+    width,
+    height,
+    top: y,
+    right: x + width,
+    bottom: y + height,
+    left: x,
+    x,
+    y
+  };
+}
+
+function getDocumentElement(node) {
+  return ((isNode(node) ? node.ownerDocument : node.document) || window.document).documentElement;
+}
+
+function getNodeScroll(element) {
+  if (isElement(element)) {
+    return {
+      scrollLeft: element.scrollLeft,
+      scrollTop: element.scrollTop
+    };
+  }
+  return {
+    scrollLeft: element.pageXOffset,
+    scrollTop: element.pageYOffset
+  };
+}
+
+function convertOffsetParentRelativeRectToViewportRelativeRect(_ref) {
+  let {
+    rect,
+    offsetParent,
+    strategy
+  } = _ref;
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  if (offsetParent === documentElement) {
+    return rect;
+  }
+  let scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  let scale = {
+    x: 1,
+    y: 1
+  };
+  const offsets = {
+    x: 0,
+    y: 0
+  };
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+    if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+    if (isHTMLElement(offsetParent)) {
+      const offsetRect = getBoundingClientRect(offsetParent);
+      scale = getScale(offsetParent);
+      offsets.x = offsetRect.x + offsetParent.clientLeft;
+      offsets.y = offsetRect.y + offsetParent.clientTop;
+    }
+  }
+  return {
+    width: rect.width * scale.x,
+    height: rect.height * scale.y,
+    x: rect.x * scale.x - scroll.scrollLeft * scale.x + offsets.x,
+    y: rect.y * scale.y - scroll.scrollTop * scale.y + offsets.y
+  };
+}
+
+function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  return getBoundingClientRect(getDocumentElement(element)).left + getNodeScroll(element).scrollLeft;
+}
+
+// Gets the entire size of the scrollable document area, even extending outside
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable.
+function getDocumentRect(element) {
+  const html = getDocumentElement(element);
+  const scroll = getNodeScroll(element);
+  const body = element.ownerDocument.body;
+  const width = max(html.scrollWidth, html.clientWidth, body.scrollWidth, body.clientWidth);
+  const height = max(html.scrollHeight, html.clientHeight, body.scrollHeight, body.clientHeight);
+  let x = -scroll.scrollLeft + getWindowScrollBarX(element);
+  const y = -scroll.scrollTop;
+  if (getComputedStyle$1(body).direction === 'rtl') {
+    x += max(html.clientWidth, body.clientWidth) - width;
+  }
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+
+function getParentNode(node) {
+  if (getNodeName(node) === 'html') {
+    return node;
+  }
+  const result =
+  // Step into the shadow DOM of the parent of a slotted node.
+  node.assignedSlot ||
+  // DOM Element detected.
+  node.parentNode ||
+  // ShadowRoot detected.
+  isShadowRoot(node) && node.host ||
+  // Fallback.
+  getDocumentElement(node);
+  return isShadowRoot(result) ? result.host : result;
+}
+
+function getNearestOverflowAncestor(node) {
+  const parentNode = getParentNode(node);
+  if (isLastTraversableNode(parentNode)) {
+    // `getParentNode` will never return a `Document` due to the fallback
+    // check, so it's either the <html> or <body> element.
+    return parentNode.ownerDocument.body;
+  }
+  if (isHTMLElement(parentNode) && isOverflowElement(parentNode)) {
+    return parentNode;
+  }
+  return getNearestOverflowAncestor(parentNode);
+}
+
+function getOverflowAncestors(node, list) {
+  var _node$ownerDocument;
+  if (list === void 0) {
+    list = [];
+  }
+  const scrollableAncestor = getNearestOverflowAncestor(node);
+  const isBody = scrollableAncestor === ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.body);
+  const win = getWindow(scrollableAncestor);
+  if (isBody) {
+    return list.concat(win, win.visualViewport || [], isOverflowElement(scrollableAncestor) ? scrollableAncestor : []);
+  }
+  return list.concat(scrollableAncestor, getOverflowAncestors(scrollableAncestor));
+}
+
+function getViewportRect(element, strategy) {
+  const win = getWindow(element);
+  const html = getDocumentElement(element);
+  const visualViewport = win.visualViewport;
+  let width = html.clientWidth;
+  let height = html.clientHeight;
+  let x = 0;
+  let y = 0;
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height;
+    const layoutViewport = isLayoutViewport();
+    if (layoutViewport || !layoutViewport && strategy === 'fixed') {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+
+// Returns the inner client rect, subtracting scrollbars if present.
+function getInnerBoundingClientRect(element, strategy) {
+  const clientRect = getBoundingClientRect(element, true, strategy === 'fixed');
+  const top = clientRect.top + element.clientTop;
+  const left = clientRect.left + element.clientLeft;
+  const scale = isHTMLElement(element) ? getScale(element) : {
+    x: 1,
+    y: 1
+  };
+  const width = element.clientWidth * scale.x;
+  const height = element.clientHeight * scale.y;
+  const x = left * scale.x;
+  const y = top * scale.y;
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+function getClientRectFromClippingAncestor(element, clippingAncestor, strategy) {
+  if (clippingAncestor === 'viewport') {
+    return rectToClientRect(getViewportRect(element, strategy));
+  }
+  if (isElement(clippingAncestor)) {
+    return rectToClientRect(getInnerBoundingClientRect(clippingAncestor, strategy));
+  }
+  return rectToClientRect(getDocumentRect(getDocumentElement(element)));
+}
+
+// A "clipping ancestor" is an `overflow` element with the characteristic of
+// clipping (or hiding) child elements. This returns all clipping ancestors
+// of the given element up the tree.
+function getClippingElementAncestors(element, cache) {
+  const cachedResult = cache.get(element);
+  if (cachedResult) {
+    return cachedResult;
+  }
+  let result = getOverflowAncestors(element).filter(el => isElement(el) && getNodeName(el) !== 'body');
+  let currentContainingBlockComputedStyle = null;
+  const elementIsFixed = getComputedStyle$1(element).position === 'fixed';
+  let currentNode = elementIsFixed ? getParentNode(element) : element;
+
+  // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+  while (isElement(currentNode) && !isLastTraversableNode(currentNode)) {
+    const computedStyle = getComputedStyle$1(currentNode);
+    const containingBlock = isContainingBlock(currentNode);
+    const shouldDropCurrentNode = elementIsFixed ? !containingBlock && !currentContainingBlockComputedStyle : !containingBlock && computedStyle.position === 'static' && !!currentContainingBlockComputedStyle && ['absolute', 'fixed'].includes(currentContainingBlockComputedStyle.position);
+    if (shouldDropCurrentNode) {
+      // Drop non-containing blocks.
+      result = result.filter(ancestor => ancestor !== currentNode);
+    } else {
+      // Record last containing block for next iteration.
+      currentContainingBlockComputedStyle = computedStyle;
+    }
+    currentNode = getParentNode(currentNode);
+  }
+  cache.set(element, result);
+  return result;
+}
+
+// Gets the maximum area that the element is visible in due to any number of
+// clipping ancestors.
+function getClippingRect(_ref) {
+  let {
+    element,
+    boundary,
+    rootBoundary,
+    strategy
+  } = _ref;
+  const elementClippingAncestors = boundary === 'clippingAncestors' ? getClippingElementAncestors(element, this._c) : [].concat(boundary);
+  const clippingAncestors = [...elementClippingAncestors, rootBoundary];
+  const firstClippingAncestor = clippingAncestors[0];
+  const clippingRect = clippingAncestors.reduce((accRect, clippingAncestor) => {
+    const rect = getClientRectFromClippingAncestor(element, clippingAncestor, strategy);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromClippingAncestor(element, firstClippingAncestor, strategy));
+  return {
+    width: clippingRect.right - clippingRect.left,
+    height: clippingRect.bottom - clippingRect.top,
+    x: clippingRect.left,
+    y: clippingRect.top
+  };
+}
+
+function getDimensions(element) {
+  if (isHTMLElement(element)) {
+    return getCssDimensions(element);
+  }
+  return element.getBoundingClientRect();
+}
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || getComputedStyle$1(element).position === 'fixed') {
+    return null;
+  }
+  return element.offsetParent;
+}
+function getContainingBlock(element) {
+  let currentNode = getParentNode(element);
+  while (isHTMLElement(currentNode) && !isLastTraversableNode(currentNode)) {
+    if (isContainingBlock(currentNode)) {
+      return currentNode;
+    } else {
+      currentNode = getParentNode(currentNode);
+    }
+  }
+  return null;
+}
+
+// Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+function getOffsetParent(element) {
+  const window = getWindow(element);
+  let offsetParent = getTrueOffsetParent(element);
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle$1(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle$1(offsetParent).position === 'static' && !isContainingBlock(offsetParent))) {
+    return window;
+  }
+  return offsetParent || getContainingBlock(element) || window;
+}
+
+function getRectRelativeToOffsetParent(element, offsetParent, strategy) {
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  const rect = getBoundingClientRect(element, true, strategy === 'fixed', offsetParent);
+  let scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  const offsets = {
+    x: 0,
+    y: 0
+  };
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+    if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+    if (isHTMLElement(offsetParent)) {
+      const offsetRect = getBoundingClientRect(offsetParent, true);
+      offsets.x = offsetRect.x + offsetParent.clientLeft;
+      offsets.y = offsetRect.y + offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
+
+const platform = {
+  getClippingRect,
+  convertOffsetParentRelativeRectToViewportRelativeRect,
+  isElement,
+  getDimensions,
+  getOffsetParent,
+  getDocumentElement,
+  getScale,
+  async getElementRects(_ref) {
+    let {
+      reference,
+      floating,
+      strategy
+    } = _ref;
+    const getOffsetParentFn = this.getOffsetParent || getOffsetParent;
+    const getDimensionsFn = this.getDimensions;
+    return {
+      reference: getRectRelativeToOffsetParent(reference, await getOffsetParentFn(floating), strategy),
+      floating: {
+        x: 0,
+        y: 0,
+        ...(await getDimensionsFn(floating))
+      }
+    };
+  },
+  getClientRects: element => Array.from(element.getClientRects()),
+  isRTL: element => getComputedStyle$1(element).direction === 'rtl'
+};
+
+/**
+ * Automatically updates the position of the floating element when necessary.
+ * @see https://floating-ui.com/docs/autoUpdate
+ */
+function autoUpdate(reference, floating, update, options) {
+  if (options === void 0) {
+    options = {};
+  }
+  const {
+    ancestorScroll: _ancestorScroll = true,
+    ancestorResize = true,
+    elementResize = true,
+    animationFrame = false
+  } = options;
+  const ancestorScroll = _ancestorScroll && !animationFrame;
+  const ancestors = ancestorScroll || ancestorResize ? [...(isElement(reference) ? getOverflowAncestors(reference) : reference.contextElement ? getOverflowAncestors(reference.contextElement) : []), ...getOverflowAncestors(floating)] : [];
+  ancestors.forEach(ancestor => {
+    ancestorScroll && ancestor.addEventListener('scroll', update, {
+      passive: true
+    });
+    ancestorResize && ancestor.addEventListener('resize', update);
+  });
+  let observer = null;
+  if (elementResize) {
+    let initialUpdate = true;
+    observer = new ResizeObserver(() => {
+      if (!initialUpdate) {
+        update();
+      }
+      initialUpdate = false;
+    });
+    isElement(reference) && !animationFrame && observer.observe(reference);
+    if (!isElement(reference) && reference.contextElement && !animationFrame) {
+      observer.observe(reference.contextElement);
+    }
+    observer.observe(floating);
+  }
+  let frameId;
+  let prevRefRect = animationFrame ? getBoundingClientRect(reference) : null;
+  if (animationFrame) {
+    frameLoop();
+  }
+  function frameLoop() {
+    const nextRefRect = getBoundingClientRect(reference);
+    if (prevRefRect && (nextRefRect.x !== prevRefRect.x || nextRefRect.y !== prevRefRect.y || nextRefRect.width !== prevRefRect.width || nextRefRect.height !== prevRefRect.height)) {
+      update();
+    }
+    prevRefRect = nextRefRect;
+    frameId = requestAnimationFrame(frameLoop);
+  }
+  update();
+  return () => {
+    var _observer;
+    ancestors.forEach(ancestor => {
+      ancestorScroll && ancestor.removeEventListener('scroll', update);
+      ancestorResize && ancestor.removeEventListener('resize', update);
+    });
+    (_observer = observer) == null ? void 0 : _observer.disconnect();
+    observer = null;
+    if (animationFrame) {
+      cancelAnimationFrame(frameId);
+    }
+  };
+}
+
+/**
+ * Computes the `x` and `y` coordinates that will place the floating element
+ * next to a reference element when it is given a certain CSS positioning
+ * strategy.
+ */
+const computePosition = (reference, floating, options) => {
+  // This caches the expensive `getClippingElementAncestors` function so that
+  // multiple lifecycle resets re-use the same result. It only lives for a
+  // single call. If other functions become expensive, we can add them as well.
+  const cache = new Map();
+  const mergedOptions = {
+    platform,
+    ...options
+  };
+  const platformWithCache = {
+    ...mergedOptions.platform,
+    _c: cache
+  };
+  return computePosition$1(reference, floating, {
+    ...mergedOptions,
+    platform: platformWithCache
+  });
+};
+
+export { autoUpdate, computePosition, getOverflowAncestors, platform };

praesentation/node_modules/@floating-ui/dom/dist/floating-ui.dom.esm.js

@@ -0,0 +1,635 @@
+import { rectToClientRect, computePosition as computePosition$1 } from '@floating-ui/core';
+export { arrow, autoPlacement, detectOverflow, flip, hide, inline, limitShift, offset, shift, size } from '@floating-ui/core';
+
+function getWindow(node) {
+  var _node$ownerDocument;
+  return ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.defaultView) || window;
+}
+
+function getComputedStyle$1(element) {
+  return getWindow(element).getComputedStyle(element);
+}
+
+const min = Math.min;
+const max = Math.max;
+const round = Math.round;
+
+function getCssDimensions(element) {
+  const css = getComputedStyle$1(element);
+  let width = parseFloat(css.width);
+  let height = parseFloat(css.height);
+  const offsetWidth = element.offsetWidth;
+  const offsetHeight = element.offsetHeight;
+  const shouldFallback = round(width) !== offsetWidth || round(height) !== offsetHeight;
+  if (shouldFallback) {
+    width = offsetWidth;
+    height = offsetHeight;
+  }
+  return {
+    width,
+    height,
+    fallback: shouldFallback
+  };
+}
+
+function getNodeName(node) {
+  return isNode(node) ? (node.nodeName || '').toLowerCase() : '';
+}
+
+let uaString;
+function getUAString() {
+  if (uaString) {
+    return uaString;
+  }
+  const uaData = navigator.userAgentData;
+  if (uaData && Array.isArray(uaData.brands)) {
+    uaString = uaData.brands.map(item => item.brand + "/" + item.version).join(' ');
+    return uaString;
+  }
+  return navigator.userAgent;
+}
+
+function isHTMLElement(value) {
+  return value instanceof getWindow(value).HTMLElement;
+}
+function isElement(value) {
+  return value instanceof getWindow(value).Element;
+}
+function isNode(value) {
+  return value instanceof getWindow(value).Node;
+}
+function isShadowRoot(node) {
+  // Browsers without `ShadowRoot` support.
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+  const OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+function isOverflowElement(element) {
+  const {
+    overflow,
+    overflowX,
+    overflowY,
+    display
+  } = getComputedStyle$1(element);
+  return /auto|scroll|overlay|hidden|clip/.test(overflow + overflowY + overflowX) && !['inline', 'contents'].includes(display);
+}
+function isTableElement(element) {
+  return ['table', 'td', 'th'].includes(getNodeName(element));
+}
+function isContainingBlock(element) {
+  // TODO: Try to use feature detection here instead.
+  const isFirefox = /firefox/i.test(getUAString());
+  const css = getComputedStyle$1(element);
+  const backdropFilter = css.backdropFilter || css.WebkitBackdropFilter;
+
+  // This is non-exhaustive but covers the most common CSS properties that
+  // create a containing block.
+  // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+  return css.transform !== 'none' || css.perspective !== 'none' || (backdropFilter ? backdropFilter !== 'none' : false) || isFirefox && css.willChange === 'filter' || isFirefox && (css.filter ? css.filter !== 'none' : false) || ['transform', 'perspective'].some(value => css.willChange.includes(value)) || ['paint', 'layout', 'strict', 'content'].some(value => {
+    // Add type check for old browsers.
+    const contain = css.contain;
+    return contain != null ? contain.includes(value) : false;
+  });
+}
+function isLayoutViewport() {
+  // TODO: Try to use feature detection here instead. Feature detection for
+  // this can fail in various ways, making the userAgent check the most:
+  // reliable:
+  // • Always-visible scrollbar or not
+  // • Width of <html>
+
+  // Not Safari.
+  return !/^((?!chrome|android).)*safari/i.test(getUAString());
+}
+function isLastTraversableNode(node) {
+  return ['html', 'body', '#document'].includes(getNodeName(node));
+}
+
+function unwrapElement(element) {
+  return !isElement(element) ? element.contextElement : element;
+}
+
+const FALLBACK_SCALE = {
+  x: 1,
+  y: 1
+};
+function getScale(element) {
+  const domElement = unwrapElement(element);
+  if (!isHTMLElement(domElement)) {
+    return FALLBACK_SCALE;
+  }
+  const rect = domElement.getBoundingClientRect();
+  const {
+    width,
+    height,
+    fallback
+  } = getCssDimensions(domElement);
+  let x = (fallback ? round(rect.width) : rect.width) / width;
+  let y = (fallback ? round(rect.height) : rect.height) / height;
+
+  // 0, NaN, or Infinity should always fallback to 1.
+
+  if (!x || !Number.isFinite(x)) {
+    x = 1;
+  }
+  if (!y || !Number.isFinite(y)) {
+    y = 1;
+  }
+  return {
+    x,
+    y
+  };
+}
+
+function getBoundingClientRect(element, includeScale, isFixedStrategy, offsetParent) {
+  var _win$visualViewport, _win$visualViewport2;
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+  if (isFixedStrategy === void 0) {
+    isFixedStrategy = false;
+  }
+  const clientRect = element.getBoundingClientRect();
+  const domElement = unwrapElement(element);
+  let scale = FALLBACK_SCALE;
+  if (includeScale) {
+    if (offsetParent) {
+      if (isElement(offsetParent)) {
+        scale = getScale(offsetParent);
+      }
+    } else {
+      scale = getScale(element);
+    }
+  }
+  const win = domElement ? getWindow(domElement) : window;
+  const addVisualOffsets = !isLayoutViewport() && isFixedStrategy;
+  let x = (clientRect.left + (addVisualOffsets ? ((_win$visualViewport = win.visualViewport) == null ? void 0 : _win$visualViewport.offsetLeft) || 0 : 0)) / scale.x;
+  let y = (clientRect.top + (addVisualOffsets ? ((_win$visualViewport2 = win.visualViewport) == null ? void 0 : _win$visualViewport2.offsetTop) || 0 : 0)) / scale.y;
+  let width = clientRect.width / scale.x;
+  let height = clientRect.height / scale.y;
+  if (domElement) {
+    const win = getWindow(domElement);
+    const offsetWin = offsetParent && isElement(offsetParent) ? getWindow(offsetParent) : offsetParent;
+    let currentIFrame = win.frameElement;
+    while (currentIFrame && offsetParent && offsetWin !== win) {
+      const iframeScale = getScale(currentIFrame);
+      const iframeRect = currentIFrame.getBoundingClientRect();
+      const css = getComputedStyle(currentIFrame);
+      iframeRect.x += (currentIFrame.clientLeft + parseFloat(css.paddingLeft)) * iframeScale.x;
+      iframeRect.y += (currentIFrame.clientTop + parseFloat(css.paddingTop)) * iframeScale.y;
+      x *= iframeScale.x;
+      y *= iframeScale.y;
+      width *= iframeScale.x;
+      height *= iframeScale.y;
+      x += iframeRect.x;
+      y += iframeRect.y;
+      currentIFrame = getWindow(currentIFrame).frameElement;
+    }
+  }
+  return {
+    width,
+    height,
+    top: y,
+    right: x + width,
+    bottom: y + height,
+    left: x,
+    x,
+    y
+  };
+}
+
+function getDocumentElement(node) {
+  return ((isNode(node) ? node.ownerDocument : node.document) || window.document).documentElement;
+}
+
+function getNodeScroll(element) {
+  if (isElement(element)) {
+    return {
+      scrollLeft: element.scrollLeft,
+      scrollTop: element.scrollTop
+    };
+  }
+  return {
+    scrollLeft: element.pageXOffset,
+    scrollTop: element.pageYOffset
+  };
+}
+
+function convertOffsetParentRelativeRectToViewportRelativeRect(_ref) {
+  let {
+    rect,
+    offsetParent,
+    strategy
+  } = _ref;
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  if (offsetParent === documentElement) {
+    return rect;
+  }
+  let scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  let scale = {
+    x: 1,
+    y: 1
+  };
+  const offsets = {
+    x: 0,
+    y: 0
+  };
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+    if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+    if (isHTMLElement(offsetParent)) {
+      const offsetRect = getBoundingClientRect(offsetParent);
+      scale = getScale(offsetParent);
+      offsets.x = offsetRect.x + offsetParent.clientLeft;
+      offsets.y = offsetRect.y + offsetParent.clientTop;
+    }
+  }
+  return {
+    width: rect.width * scale.x,
+    height: rect.height * scale.y,
+    x: rect.x * scale.x - scroll.scrollLeft * scale.x + offsets.x,
+    y: rect.y * scale.y - scroll.scrollTop * scale.y + offsets.y
+  };
+}
+
+function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  return getBoundingClientRect(getDocumentElement(element)).left + getNodeScroll(element).scrollLeft;
+}
+
+// Gets the entire size of the scrollable document area, even extending outside
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable.
+function getDocumentRect(element) {
+  const html = getDocumentElement(element);
+  const scroll = getNodeScroll(element);
+  const body = element.ownerDocument.body;
+  const width = max(html.scrollWidth, html.clientWidth, body.scrollWidth, body.clientWidth);
+  const height = max(html.scrollHeight, html.clientHeight, body.scrollHeight, body.clientHeight);
+  let x = -scroll.scrollLeft + getWindowScrollBarX(element);
+  const y = -scroll.scrollTop;
+  if (getComputedStyle$1(body).direction === 'rtl') {
+    x += max(html.clientWidth, body.clientWidth) - width;
+  }
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+
+function getParentNode(node) {
+  if (getNodeName(node) === 'html') {
+    return node;
+  }
+  const result =
+  // Step into the shadow DOM of the parent of a slotted node.
+  node.assignedSlot ||
+  // DOM Element detected.
+  node.parentNode ||
+  // ShadowRoot detected.
+  isShadowRoot(node) && node.host ||
+  // Fallback.
+  getDocumentElement(node);
+  return isShadowRoot(result) ? result.host : result;
+}
+
+function getNearestOverflowAncestor(node) {
+  const parentNode = getParentNode(node);
+  if (isLastTraversableNode(parentNode)) {
+    // `getParentNode` will never return a `Document` due to the fallback
+    // check, so it's either the <html> or <body> element.
+    return parentNode.ownerDocument.body;
+  }
+  if (isHTMLElement(parentNode) && isOverflowElement(parentNode)) {
+    return parentNode;
+  }
+  return getNearestOverflowAncestor(parentNode);
+}
+
+function getOverflowAncestors(node, list) {
+  var _node$ownerDocument;
+  if (list === void 0) {
+    list = [];
+  }
+  const scrollableAncestor = getNearestOverflowAncestor(node);
+  const isBody = scrollableAncestor === ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.body);
+  const win = getWindow(scrollableAncestor);
+  if (isBody) {
+    return list.concat(win, win.visualViewport || [], isOverflowElement(scrollableAncestor) ? scrollableAncestor : []);
+  }
+  return list.concat(scrollableAncestor, getOverflowAncestors(scrollableAncestor));
+}
+
+function getViewportRect(element, strategy) {
+  const win = getWindow(element);
+  const html = getDocumentElement(element);
+  const visualViewport = win.visualViewport;
+  let width = html.clientWidth;
+  let height = html.clientHeight;
+  let x = 0;
+  let y = 0;
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height;
+    const layoutViewport = isLayoutViewport();
+    if (layoutViewport || !layoutViewport && strategy === 'fixed') {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+
+// Returns the inner client rect, subtracting scrollbars if present.
+function getInnerBoundingClientRect(element, strategy) {
+  const clientRect = getBoundingClientRect(element, true, strategy === 'fixed');
+  const top = clientRect.top + element.clientTop;
+  const left = clientRect.left + element.clientLeft;
+  const scale = isHTMLElement(element) ? getScale(element) : {
+    x: 1,
+    y: 1
+  };
+  const width = element.clientWidth * scale.x;
+  const height = element.clientHeight * scale.y;
+  const x = left * scale.x;
+  const y = top * scale.y;
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+function getClientRectFromClippingAncestor(element, clippingAncestor, strategy) {
+  if (clippingAncestor === 'viewport') {
+    return rectToClientRect(getViewportRect(element, strategy));
+  }
+  if (isElement(clippingAncestor)) {
+    return rectToClientRect(getInnerBoundingClientRect(clippingAncestor, strategy));
+  }
+  return rectToClientRect(getDocumentRect(getDocumentElement(element)));
+}
+
+// A "clipping ancestor" is an `overflow` element with the characteristic of
+// clipping (or hiding) child elements. This returns all clipping ancestors
+// of the given element up the tree.
+function getClippingElementAncestors(element, cache) {
+  const cachedResult = cache.get(element);
+  if (cachedResult) {
+    return cachedResult;
+  }
+  let result = getOverflowAncestors(element).filter(el => isElement(el) && getNodeName(el) !== 'body');
+  let currentContainingBlockComputedStyle = null;
+  const elementIsFixed = getComputedStyle$1(element).position === 'fixed';
+  let currentNode = elementIsFixed ? getParentNode(element) : element;
+
+  // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+  while (isElement(currentNode) && !isLastTraversableNode(currentNode)) {
+    const computedStyle = getComputedStyle$1(currentNode);
+    const containingBlock = isContainingBlock(currentNode);
+    const shouldDropCurrentNode = elementIsFixed ? !containingBlock && !currentContainingBlockComputedStyle : !containingBlock && computedStyle.position === 'static' && !!currentContainingBlockComputedStyle && ['absolute', 'fixed'].includes(currentContainingBlockComputedStyle.position);
+    if (shouldDropCurrentNode) {
+      // Drop non-containing blocks.
+      result = result.filter(ancestor => ancestor !== currentNode);
+    } else {
+      // Record last containing block for next iteration.
+      currentContainingBlockComputedStyle = computedStyle;
+    }
+    currentNode = getParentNode(currentNode);
+  }
+  cache.set(element, result);
+  return result;
+}
+
+// Gets the maximum area that the element is visible in due to any number of
+// clipping ancestors.
+function getClippingRect(_ref) {
+  let {
+    element,
+    boundary,
+    rootBoundary,
+    strategy
+  } = _ref;
+  const elementClippingAncestors = boundary === 'clippingAncestors' ? getClippingElementAncestors(element, this._c) : [].concat(boundary);
+  const clippingAncestors = [...elementClippingAncestors, rootBoundary];
+  const firstClippingAncestor = clippingAncestors[0];
+  const clippingRect = clippingAncestors.reduce((accRect, clippingAncestor) => {
+    const rect = getClientRectFromClippingAncestor(element, clippingAncestor, strategy);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromClippingAncestor(element, firstClippingAncestor, strategy));
+  return {
+    width: clippingRect.right - clippingRect.left,
+    height: clippingRect.bottom - clippingRect.top,
+    x: clippingRect.left,
+    y: clippingRect.top
+  };
+}
+
+function getDimensions(element) {
+  if (isHTMLElement(element)) {
+    return getCssDimensions(element);
+  }
+  return element.getBoundingClientRect();
+}
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || getComputedStyle$1(element).position === 'fixed') {
+    return null;
+  }
+  return element.offsetParent;
+}
+function getContainingBlock(element) {
+  let currentNode = getParentNode(element);
+  while (isHTMLElement(currentNode) && !isLastTraversableNode(currentNode)) {
+    if (isContainingBlock(currentNode)) {
+      return currentNode;
+    } else {
+      currentNode = getParentNode(currentNode);
+    }
+  }
+  return null;
+}
+
+// Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+function getOffsetParent(element) {
+  const window = getWindow(element);
+  let offsetParent = getTrueOffsetParent(element);
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle$1(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle$1(offsetParent).position === 'static' && !isContainingBlock(offsetParent))) {
+    return window;
+  }
+  return offsetParent || getContainingBlock(element) || window;
+}
+
+function getRectRelativeToOffsetParent(element, offsetParent, strategy) {
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  const rect = getBoundingClientRect(element, true, strategy === 'fixed', offsetParent);
+  let scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  const offsets = {
+    x: 0,
+    y: 0
+  };
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+    if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+    if (isHTMLElement(offsetParent)) {
+      const offsetRect = getBoundingClientRect(offsetParent, true);
+      offsets.x = offsetRect.x + offsetParent.clientLeft;
+      offsets.y = offsetRect.y + offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
+
+const platform = {
+  getClippingRect,
+  convertOffsetParentRelativeRectToViewportRelativeRect,
+  isElement,
+  getDimensions,
+  getOffsetParent,
+  getDocumentElement,
+  getScale,
+  async getElementRects(_ref) {
+    let {
+      reference,
+      floating,
+      strategy
+    } = _ref;
+    const getOffsetParentFn = this.getOffsetParent || getOffsetParent;
+    const getDimensionsFn = this.getDimensions;
+    return {
+      reference: getRectRelativeToOffsetParent(reference, await getOffsetParentFn(floating), strategy),
+      floating: {
+        x: 0,
+        y: 0,
+        ...(await getDimensionsFn(floating))
+      }
+    };
+  },
+  getClientRects: element => Array.from(element.getClientRects()),
+  isRTL: element => getComputedStyle$1(element).direction === 'rtl'
+};
+
+/**
+ * Automatically updates the position of the floating element when necessary.
+ * @see https://floating-ui.com/docs/autoUpdate
+ */
+function autoUpdate(reference, floating, update, options) {
+  if (options === void 0) {
+    options = {};
+  }
+  const {
+    ancestorScroll: _ancestorScroll = true,
+    ancestorResize = true,
+    elementResize = true,
+    animationFrame = false
+  } = options;
+  const ancestorScroll = _ancestorScroll && !animationFrame;
+  const ancestors = ancestorScroll || ancestorResize ? [...(isElement(reference) ? getOverflowAncestors(reference) : reference.contextElement ? getOverflowAncestors(reference.contextElement) : []), ...getOverflowAncestors(floating)] : [];
+  ancestors.forEach(ancestor => {
+    ancestorScroll && ancestor.addEventListener('scroll', update, {
+      passive: true
+    });
+    ancestorResize && ancestor.addEventListener('resize', update);
+  });
+  let observer = null;
+  if (elementResize) {
+    let initialUpdate = true;
+    observer = new ResizeObserver(() => {
+      if (!initialUpdate) {
+        update();
+      }
+      initialUpdate = false;
+    });
+    isElement(reference) && !animationFrame && observer.observe(reference);
+    if (!isElement(reference) && reference.contextElement && !animationFrame) {
+      observer.observe(reference.contextElement);
+    }
+    observer.observe(floating);
+  }
+  let frameId;
+  let prevRefRect = animationFrame ? getBoundingClientRect(reference) : null;
+  if (animationFrame) {
+    frameLoop();
+  }
+  function frameLoop() {
+    const nextRefRect = getBoundingClientRect(reference);
+    if (prevRefRect && (nextRefRect.x !== prevRefRect.x || nextRefRect.y !== prevRefRect.y || nextRefRect.width !== prevRefRect.width || nextRefRect.height !== prevRefRect.height)) {
+      update();
+    }
+    prevRefRect = nextRefRect;
+    frameId = requestAnimationFrame(frameLoop);
+  }
+  update();
+  return () => {
+    var _observer;
+    ancestors.forEach(ancestor => {
+      ancestorScroll && ancestor.removeEventListener('scroll', update);
+      ancestorResize && ancestor.removeEventListener('resize', update);
+    });
+    (_observer = observer) == null ? void 0 : _observer.disconnect();
+    observer = null;
+    if (animationFrame) {
+      cancelAnimationFrame(frameId);
+    }
+  };
+}
+
+/**
+ * Computes the `x` and `y` coordinates that will place the floating element
+ * next to a reference element when it is given a certain CSS positioning
+ * strategy.
+ */
+const computePosition = (reference, floating, options) => {
+  // This caches the expensive `getClippingElementAncestors` function so that
+  // multiple lifecycle resets re-use the same result. It only lives for a
+  // single call. If other functions become expensive, we can add them as well.
+  const cache = new Map();
+  const mergedOptions = {
+    platform,
+    ...options
+  };
+  const platformWithCache = {
+    ...mergedOptions.platform,
+    _c: cache
+  };
+  return computePosition$1(reference, floating, {
+    ...mergedOptions,
+    platform: platformWithCache
+  });
+};
+
+export { autoUpdate, computePosition, getOverflowAncestors, platform };

praesentation/node_modules/@floating-ui/dom/dist/floating-ui.dom.mjs

@@ -0,0 +1,635 @@
+import { rectToClientRect, computePosition as computePosition$1 } from '@floating-ui/core';
+export { arrow, autoPlacement, detectOverflow, flip, hide, inline, limitShift, offset, shift, size } from '@floating-ui/core';
+
+function getWindow(node) {
+  var _node$ownerDocument;
+  return ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.defaultView) || window;
+}
+
+function getComputedStyle$1(element) {
+  return getWindow(element).getComputedStyle(element);
+}
+
+const min = Math.min;
+const max = Math.max;
+const round = Math.round;
+
+function getCssDimensions(element) {
+  const css = getComputedStyle$1(element);
+  let width = parseFloat(css.width);
+  let height = parseFloat(css.height);
+  const offsetWidth = element.offsetWidth;
+  const offsetHeight = element.offsetHeight;
+  const shouldFallback = round(width) !== offsetWidth || round(height) !== offsetHeight;
+  if (shouldFallback) {
+    width = offsetWidth;
+    height = offsetHeight;
+  }
+  return {
+    width,
+    height,
+    fallback: shouldFallback
+  };
+}
+
+function getNodeName(node) {
+  return isNode(node) ? (node.nodeName || '').toLowerCase() : '';
+}
+
+let uaString;
+function getUAString() {
+  if (uaString) {
+    return uaString;
+  }
+  const uaData = navigator.userAgentData;
+  if (uaData && Array.isArray(uaData.brands)) {
+    uaString = uaData.brands.map(item => item.brand + "/" + item.version).join(' ');
+    return uaString;
+  }
+  return navigator.userAgent;
+}
+
+function isHTMLElement(value) {
+  return value instanceof getWindow(value).HTMLElement;
+}
+function isElement(value) {
+  return value instanceof getWindow(value).Element;
+}
+function isNode(value) {
+  return value instanceof getWindow(value).Node;
+}
+function isShadowRoot(node) {
+  // Browsers without `ShadowRoot` support.
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+  const OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+function isOverflowElement(element) {
+  const {
+    overflow,
+    overflowX,
+    overflowY,
+    display
+  } = getComputedStyle$1(element);
+  return /auto|scroll|overlay|hidden|clip/.test(overflow + overflowY + overflowX) && !['inline', 'contents'].includes(display);
+}
+function isTableElement(element) {
+  return ['table', 'td', 'th'].includes(getNodeName(element));
+}
+function isContainingBlock(element) {
+  // TODO: Try to use feature detection here instead.
+  const isFirefox = /firefox/i.test(getUAString());
+  const css = getComputedStyle$1(element);
+  const backdropFilter = css.backdropFilter || css.WebkitBackdropFilter;
+
+  // This is non-exhaustive but covers the most common CSS properties that
+  // create a containing block.
+  // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+  return css.transform !== 'none' || css.perspective !== 'none' || (backdropFilter ? backdropFilter !== 'none' : false) || isFirefox && css.willChange === 'filter' || isFirefox && (css.filter ? css.filter !== 'none' : false) || ['transform', 'perspective'].some(value => css.willChange.includes(value)) || ['paint', 'layout', 'strict', 'content'].some(value => {
+    // Add type check for old browsers.
+    const contain = css.contain;
+    return contain != null ? contain.includes(value) : false;
+  });
+}
+function isLayoutViewport() {
+  // TODO: Try to use feature detection here instead. Feature detection for
+  // this can fail in various ways, making the userAgent check the most:
+  // reliable:
+  // • Always-visible scrollbar or not
+  // • Width of <html>
+
+  // Not Safari.
+  return !/^((?!chrome|android).)*safari/i.test(getUAString());
+}
+function isLastTraversableNode(node) {
+  return ['html', 'body', '#document'].includes(getNodeName(node));
+}
+
+function unwrapElement(element) {
+  return !isElement(element) ? element.contextElement : element;
+}
+
+const FALLBACK_SCALE = {
+  x: 1,
+  y: 1
+};
+function getScale(element) {
+  const domElement = unwrapElement(element);
+  if (!isHTMLElement(domElement)) {
+    return FALLBACK_SCALE;
+  }
+  const rect = domElement.getBoundingClientRect();
+  const {
+    width,
+    height,
+    fallback
+  } = getCssDimensions(domElement);
+  let x = (fallback ? round(rect.width) : rect.width) / width;
+  let y = (fallback ? round(rect.height) : rect.height) / height;
+
+  // 0, NaN, or Infinity should always fallback to 1.
+
+  if (!x || !Number.isFinite(x)) {
+    x = 1;
+  }
+  if (!y || !Number.isFinite(y)) {
+    y = 1;
+  }
+  return {
+    x,
+    y
+  };
+}
+
+function getBoundingClientRect(element, includeScale, isFixedStrategy, offsetParent) {
+  var _win$visualViewport, _win$visualViewport2;
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+  if (isFixedStrategy === void 0) {
+    isFixedStrategy = false;
+  }
+  const clientRect = element.getBoundingClientRect();
+  const domElement = unwrapElement(element);
+  let scale = FALLBACK_SCALE;
+  if (includeScale) {
+    if (offsetParent) {
+      if (isElement(offsetParent)) {
+        scale = getScale(offsetParent);
+      }
+    } else {
+      scale = getScale(element);
+    }
+  }
+  const win = domElement ? getWindow(domElement) : window;
+  const addVisualOffsets = !isLayoutViewport() && isFixedStrategy;
+  let x = (clientRect.left + (addVisualOffsets ? ((_win$visualViewport = win.visualViewport) == null ? void 0 : _win$visualViewport.offsetLeft) || 0 : 0)) / scale.x;
+  let y = (clientRect.top + (addVisualOffsets ? ((_win$visualViewport2 = win.visualViewport) == null ? void 0 : _win$visualViewport2.offsetTop) || 0 : 0)) / scale.y;
+  let width = clientRect.width / scale.x;
+  let height = clientRect.height / scale.y;
+  if (domElement) {
+    const win = getWindow(domElement);
+    const offsetWin = offsetParent && isElement(offsetParent) ? getWindow(offsetParent) : offsetParent;
+    let currentIFrame = win.frameElement;
+    while (currentIFrame && offsetParent && offsetWin !== win) {
+      const iframeScale = getScale(currentIFrame);
+      const iframeRect = currentIFrame.getBoundingClientRect();
+      const css = getComputedStyle(currentIFrame);
+      iframeRect.x += (currentIFrame.clientLeft + parseFloat(css.paddingLeft)) * iframeScale.x;
+      iframeRect.y += (currentIFrame.clientTop + parseFloat(css.paddingTop)) * iframeScale.y;
+      x *= iframeScale.x;
+      y *= iframeScale.y;
+      width *= iframeScale.x;
+      height *= iframeScale.y;
+      x += iframeRect.x;
+      y += iframeRect.y;
+      currentIFrame = getWindow(currentIFrame).frameElement;
+    }
+  }
+  return {
+    width,
+    height,
+    top: y,
+    right: x + width,
+    bottom: y + height,
+    left: x,
+    x,
+    y
+  };
+}
+
+function getDocumentElement(node) {
+  return ((isNode(node) ? node.ownerDocument : node.document) || window.document).documentElement;
+}
+
+function getNodeScroll(element) {
+  if (isElement(element)) {
+    return {
+      scrollLeft: element.scrollLeft,
+      scrollTop: element.scrollTop
+    };
+  }
+  return {
+    scrollLeft: element.pageXOffset,
+    scrollTop: element.pageYOffset
+  };
+}
+
+function convertOffsetParentRelativeRectToViewportRelativeRect(_ref) {
+  let {
+    rect,
+    offsetParent,
+    strategy
+  } = _ref;
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  if (offsetParent === documentElement) {
+    return rect;
+  }
+  let scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  let scale = {
+    x: 1,
+    y: 1
+  };
+  const offsets = {
+    x: 0,
+    y: 0
+  };
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+    if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+    if (isHTMLElement(offsetParent)) {
+      const offsetRect = getBoundingClientRect(offsetParent);
+      scale = getScale(offsetParent);
+      offsets.x = offsetRect.x + offsetParent.clientLeft;
+      offsets.y = offsetRect.y + offsetParent.clientTop;
+    }
+  }
+  return {
+    width: rect.width * scale.x,
+    height: rect.height * scale.y,
+    x: rect.x * scale.x - scroll.scrollLeft * scale.x + offsets.x,
+    y: rect.y * scale.y - scroll.scrollTop * scale.y + offsets.y
+  };
+}
+
+function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  return getBoundingClientRect(getDocumentElement(element)).left + getNodeScroll(element).scrollLeft;
+}
+
+// Gets the entire size of the scrollable document area, even extending outside
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable.
+function getDocumentRect(element) {
+  const html = getDocumentElement(element);
+  const scroll = getNodeScroll(element);
+  const body = element.ownerDocument.body;
+  const width = max(html.scrollWidth, html.clientWidth, body.scrollWidth, body.clientWidth);
+  const height = max(html.scrollHeight, html.clientHeight, body.scrollHeight, body.clientHeight);
+  let x = -scroll.scrollLeft + getWindowScrollBarX(element);
+  const y = -scroll.scrollTop;
+  if (getComputedStyle$1(body).direction === 'rtl') {
+    x += max(html.clientWidth, body.clientWidth) - width;
+  }
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+
+function getParentNode(node) {
+  if (getNodeName(node) === 'html') {
+    return node;
+  }
+  const result =
+  // Step into the shadow DOM of the parent of a slotted node.
+  node.assignedSlot ||
+  // DOM Element detected.
+  node.parentNode ||
+  // ShadowRoot detected.
+  isShadowRoot(node) && node.host ||
+  // Fallback.
+  getDocumentElement(node);
+  return isShadowRoot(result) ? result.host : result;
+}
+
+function getNearestOverflowAncestor(node) {
+  const parentNode = getParentNode(node);
+  if (isLastTraversableNode(parentNode)) {
+    // `getParentNode` will never return a `Document` due to the fallback
+    // check, so it's either the <html> or <body> element.
+    return parentNode.ownerDocument.body;
+  }
+  if (isHTMLElement(parentNode) && isOverflowElement(parentNode)) {
+    return parentNode;
+  }
+  return getNearestOverflowAncestor(parentNode);
+}
+
+function getOverflowAncestors(node, list) {
+  var _node$ownerDocument;
+  if (list === void 0) {
+    list = [];
+  }
+  const scrollableAncestor = getNearestOverflowAncestor(node);
+  const isBody = scrollableAncestor === ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.body);
+  const win = getWindow(scrollableAncestor);
+  if (isBody) {
+    return list.concat(win, win.visualViewport || [], isOverflowElement(scrollableAncestor) ? scrollableAncestor : []);
+  }
+  return list.concat(scrollableAncestor, getOverflowAncestors(scrollableAncestor));
+}
+
+function getViewportRect(element, strategy) {
+  const win = getWindow(element);
+  const html = getDocumentElement(element);
+  const visualViewport = win.visualViewport;
+  let width = html.clientWidth;
+  let height = html.clientHeight;
+  let x = 0;
+  let y = 0;
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height;
+    const layoutViewport = isLayoutViewport();
+    if (layoutViewport || !layoutViewport && strategy === 'fixed') {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+
+// Returns the inner client rect, subtracting scrollbars if present.
+function getInnerBoundingClientRect(element, strategy) {
+  const clientRect = getBoundingClientRect(element, true, strategy === 'fixed');
+  const top = clientRect.top + element.clientTop;
+  const left = clientRect.left + element.clientLeft;
+  const scale = isHTMLElement(element) ? getScale(element) : {
+    x: 1,
+    y: 1
+  };
+  const width = element.clientWidth * scale.x;
+  const height = element.clientHeight * scale.y;
+  const x = left * scale.x;
+  const y = top * scale.y;
+  return {
+    width,
+    height,
+    x,
+    y
+  };
+}
+function getClientRectFromClippingAncestor(element, clippingAncestor, strategy) {
+  if (clippingAncestor === 'viewport') {
+    return rectToClientRect(getViewportRect(element, strategy));
+  }
+  if (isElement(clippingAncestor)) {
+    return rectToClientRect(getInnerBoundingClientRect(clippingAncestor, strategy));
+  }
+  return rectToClientRect(getDocumentRect(getDocumentElement(element)));
+}
+
+// A "clipping ancestor" is an `overflow` element with the characteristic of
+// clipping (or hiding) child elements. This returns all clipping ancestors
+// of the given element up the tree.
+function getClippingElementAncestors(element, cache) {
+  const cachedResult = cache.get(element);
+  if (cachedResult) {
+    return cachedResult;
+  }
+  let result = getOverflowAncestors(element).filter(el => isElement(el) && getNodeName(el) !== 'body');
+  let currentContainingBlockComputedStyle = null;
+  const elementIsFixed = getComputedStyle$1(element).position === 'fixed';
+  let currentNode = elementIsFixed ? getParentNode(element) : element;
+
+  // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+  while (isElement(currentNode) && !isLastTraversableNode(currentNode)) {
+    const computedStyle = getComputedStyle$1(currentNode);
+    const containingBlock = isContainingBlock(currentNode);
+    const shouldDropCurrentNode = elementIsFixed ? !containingBlock && !currentContainingBlockComputedStyle : !containingBlock && computedStyle.position === 'static' && !!currentContainingBlockComputedStyle && ['absolute', 'fixed'].includes(currentContainingBlockComputedStyle.position);
+    if (shouldDropCurrentNode) {
+      // Drop non-containing blocks.
+      result = result.filter(ancestor => ancestor !== currentNode);
+    } else {
+      // Record last containing block for next iteration.
+      currentContainingBlockComputedStyle = computedStyle;
+    }
+    currentNode = getParentNode(currentNode);
+  }
+  cache.set(element, result);
+  return result;
+}
+
+// Gets the maximum area that the element is visible in due to any number of
+// clipping ancestors.
+function getClippingRect(_ref) {
+  let {
+    element,
+    boundary,
+    rootBoundary,
+    strategy
+  } = _ref;
+  const elementClippingAncestors = boundary === 'clippingAncestors' ? getClippingElementAncestors(element, this._c) : [].concat(boundary);
+  const clippingAncestors = [...elementClippingAncestors, rootBoundary];
+  const firstClippingAncestor = clippingAncestors[0];
+  const clippingRect = clippingAncestors.reduce((accRect, clippingAncestor) => {
+    const rect = getClientRectFromClippingAncestor(element, clippingAncestor, strategy);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromClippingAncestor(element, firstClippingAncestor, strategy));
+  return {
+    width: clippingRect.right - clippingRect.left,
+    height: clippingRect.bottom - clippingRect.top,
+    x: clippingRect.left,
+    y: clippingRect.top
+  };
+}
+
+function getDimensions(element) {
+  if (isHTMLElement(element)) {
+    return getCssDimensions(element);
+  }
+  return element.getBoundingClientRect();
+}
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || getComputedStyle$1(element).position === 'fixed') {
+    return null;
+  }
+  return element.offsetParent;
+}
+function getContainingBlock(element) {
+  let currentNode = getParentNode(element);
+  while (isHTMLElement(currentNode) && !isLastTraversableNode(currentNode)) {
+    if (isContainingBlock(currentNode)) {
+      return currentNode;
+    } else {
+      currentNode = getParentNode(currentNode);
+    }
+  }
+  return null;
+}
+
+// Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+function getOffsetParent(element) {
+  const window = getWindow(element);
+  let offsetParent = getTrueOffsetParent(element);
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle$1(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle$1(offsetParent).position === 'static' && !isContainingBlock(offsetParent))) {
+    return window;
+  }
+  return offsetParent || getContainingBlock(element) || window;
+}
+
+function getRectRelativeToOffsetParent(element, offsetParent, strategy) {
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  const rect = getBoundingClientRect(element, true, strategy === 'fixed', offsetParent);
+  let scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  const offsets = {
+    x: 0,
+    y: 0
+  };
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+    if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+    if (isHTMLElement(offsetParent)) {
+      const offsetRect = getBoundingClientRect(offsetParent, true);
+      offsets.x = offsetRect.x + offsetParent.clientLeft;
+      offsets.y = offsetRect.y + offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
+
+const platform = {
+  getClippingRect,
+  convertOffsetParentRelativeRectToViewportRelativeRect,
+  isElement,
+  getDimensions,
+  getOffsetParent,
+  getDocumentElement,
+  getScale,
+  async getElementRects(_ref) {
+    let {
+      reference,
+      floating,
+      strategy
+    } = _ref;
+    const getOffsetParentFn = this.getOffsetParent || getOffsetParent;
+    const getDimensionsFn = this.getDimensions;
+    return {
+      reference: getRectRelativeToOffsetParent(reference, await getOffsetParentFn(floating), strategy),
+      floating: {
+        x: 0,
+        y: 0,
+        ...(await getDimensionsFn(floating))
+      }
+    };
+  },
+  getClientRects: element => Array.from(element.getClientRects()),
+  isRTL: element => getComputedStyle$1(element).direction === 'rtl'
+};
+
+/**
+ * Automatically updates the position of the floating element when necessary.
+ * @see https://floating-ui.com/docs/autoUpdate
+ */
+function autoUpdate(reference, floating, update, options) {
+  if (options === void 0) {
+    options = {};
+  }
+  const {
+    ancestorScroll: _ancestorScroll = true,
+    ancestorResize = true,
+    elementResize = true,
+    animationFrame = false
+  } = options;
+  const ancestorScroll = _ancestorScroll && !animationFrame;
+  const ancestors = ancestorScroll || ancestorResize ? [...(isElement(reference) ? getOverflowAncestors(reference) : reference.contextElement ? getOverflowAncestors(reference.contextElement) : []), ...getOverflowAncestors(floating)] : [];
+  ancestors.forEach(ancestor => {
+    ancestorScroll && ancestor.addEventListener('scroll', update, {
+      passive: true
+    });
+    ancestorResize && ancestor.addEventListener('resize', update);
+  });
+  let observer = null;
+  if (elementResize) {
+    let initialUpdate = true;
+    observer = new ResizeObserver(() => {
+      if (!initialUpdate) {
+        update();
+      }
+      initialUpdate = false;
+    });
+    isElement(reference) && !animationFrame && observer.observe(reference);
+    if (!isElement(reference) && reference.contextElement && !animationFrame) {
+      observer.observe(reference.contextElement);
+    }
+    observer.observe(floating);
+  }
+  let frameId;
+  let prevRefRect = animationFrame ? getBoundingClientRect(reference) : null;
+  if (animationFrame) {
+    frameLoop();
+  }
+  function frameLoop() {
+    const nextRefRect = getBoundingClientRect(reference);
+    if (prevRefRect && (nextRefRect.x !== prevRefRect.x || nextRefRect.y !== prevRefRect.y || nextRefRect.width !== prevRefRect.width || nextRefRect.height !== prevRefRect.height)) {
+      update();
+    }
+    prevRefRect = nextRefRect;
+    frameId = requestAnimationFrame(frameLoop);
+  }
+  update();
+  return () => {
+    var _observer;
+    ancestors.forEach(ancestor => {
+      ancestorScroll && ancestor.removeEventListener('scroll', update);
+      ancestorResize && ancestor.removeEventListener('resize', update);
+    });
+    (_observer = observer) == null ? void 0 : _observer.disconnect();
+    observer = null;
+    if (animationFrame) {
+      cancelAnimationFrame(frameId);
+    }
+  };
+}
+
+/**
+ * Computes the `x` and `y` coordinates that will place the floating element
+ * next to a reference element when it is given a certain CSS positioning
+ * strategy.
+ */
+const computePosition = (reference, floating, options) => {
+  // This caches the expensive `getClippingElementAncestors` function so that
+  // multiple lifecycle resets re-use the same result. It only lives for a
+  // single call. If other functions become expensive, we can add them as well.
+  const cache = new Map();
+  const mergedOptions = {
+    platform,
+    ...options
+  };
+  const platformWithCache = {
+    ...mergedOptions.platform,
+    _c: cache
+  };
+  return computePosition$1(reference, floating, {
+    ...mergedOptions,
+    platform: platformWithCache
+  });
+};
+
+export { autoUpdate, computePosition, getOverflowAncestors, platform };

praesentation/node_modules/@floating-ui/dom/dist/floating-ui.dom.umd.js

@@ -0,0 +1,685 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@floating-ui/core')) :
+  typeof define === 'function' && define.amd ? define(['exports', '@floating-ui/core'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.FloatingUIDOM = {}, global.FloatingUICore));
+})(this, (function (exports, core) { 'use strict';
+
+  function getWindow(node) {
+    var _node$ownerDocument;
+    return ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.defaultView) || window;
+  }
+
+  function getComputedStyle$1(element) {
+    return getWindow(element).getComputedStyle(element);
+  }
+
+  const min = Math.min;
+  const max = Math.max;
+  const round = Math.round;
+
+  function getCssDimensions(element) {
+    const css = getComputedStyle$1(element);
+    let width = parseFloat(css.width);
+    let height = parseFloat(css.height);
+    const offsetWidth = element.offsetWidth;
+    const offsetHeight = element.offsetHeight;
+    const shouldFallback = round(width) !== offsetWidth || round(height) !== offsetHeight;
+    if (shouldFallback) {
+      width = offsetWidth;
+      height = offsetHeight;
+    }
+    return {
+      width,
+      height,
+      fallback: shouldFallback
+    };
+  }
+
+  function getNodeName(node) {
+    return isNode(node) ? (node.nodeName || '').toLowerCase() : '';
+  }
+
+  let uaString;
+  function getUAString() {
+    if (uaString) {
+      return uaString;
+    }
+    const uaData = navigator.userAgentData;
+    if (uaData && Array.isArray(uaData.brands)) {
+      uaString = uaData.brands.map(item => item.brand + "/" + item.version).join(' ');
+      return uaString;
+    }
+    return navigator.userAgent;
+  }
+
+  function isHTMLElement(value) {
+    return value instanceof getWindow(value).HTMLElement;
+  }
+  function isElement(value) {
+    return value instanceof getWindow(value).Element;
+  }
+  function isNode(value) {
+    return value instanceof getWindow(value).Node;
+  }
+  function isShadowRoot(node) {
+    // Browsers without `ShadowRoot` support.
+    if (typeof ShadowRoot === 'undefined') {
+      return false;
+    }
+    const OwnElement = getWindow(node).ShadowRoot;
+    return node instanceof OwnElement || node instanceof ShadowRoot;
+  }
+  function isOverflowElement(element) {
+    const {
+      overflow,
+      overflowX,
+      overflowY,
+      display
+    } = getComputedStyle$1(element);
+    return /auto|scroll|overlay|hidden|clip/.test(overflow + overflowY + overflowX) && !['inline', 'contents'].includes(display);
+  }
+  function isTableElement(element) {
+    return ['table', 'td', 'th'].includes(getNodeName(element));
+  }
+  function isContainingBlock(element) {
+    // TODO: Try to use feature detection here instead.
+    const isFirefox = /firefox/i.test(getUAString());
+    const css = getComputedStyle$1(element);
+    const backdropFilter = css.backdropFilter || css.WebkitBackdropFilter;
+
+    // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+    return css.transform !== 'none' || css.perspective !== 'none' || (backdropFilter ? backdropFilter !== 'none' : false) || isFirefox && css.willChange === 'filter' || isFirefox && (css.filter ? css.filter !== 'none' : false) || ['transform', 'perspective'].some(value => css.willChange.includes(value)) || ['paint', 'layout', 'strict', 'content'].some(value => {
+      // Add type check for old browsers.
+      const contain = css.contain;
+      return contain != null ? contain.includes(value) : false;
+    });
+  }
+  function isLayoutViewport() {
+    // TODO: Try to use feature detection here instead. Feature detection for
+    // this can fail in various ways, making the userAgent check the most:
+    // reliable:
+    // • Always-visible scrollbar or not
+    // • Width of <html>
+
+    // Not Safari.
+    return !/^((?!chrome|android).)*safari/i.test(getUAString());
+  }
+  function isLastTraversableNode(node) {
+    return ['html', 'body', '#document'].includes(getNodeName(node));
+  }
+
+  function unwrapElement(element) {
+    return !isElement(element) ? element.contextElement : element;
+  }
+
+  const FALLBACK_SCALE = {
+    x: 1,
+    y: 1
+  };
+  function getScale(element) {
+    const domElement = unwrapElement(element);
+    if (!isHTMLElement(domElement)) {
+      return FALLBACK_SCALE;
+    }
+    const rect = domElement.getBoundingClientRect();
+    const {
+      width,
+      height,
+      fallback
+    } = getCssDimensions(domElement);
+    let x = (fallback ? round(rect.width) : rect.width) / width;
+    let y = (fallback ? round(rect.height) : rect.height) / height;
+
+    // 0, NaN, or Infinity should always fallback to 1.
+
+    if (!x || !Number.isFinite(x)) {
+      x = 1;
+    }
+    if (!y || !Number.isFinite(y)) {
+      y = 1;
+    }
+    return {
+      x,
+      y
+    };
+  }
+
+  function getBoundingClientRect(element, includeScale, isFixedStrategy, offsetParent) {
+    var _win$visualViewport, _win$visualViewport2;
+    if (includeScale === void 0) {
+      includeScale = false;
+    }
+    if (isFixedStrategy === void 0) {
+      isFixedStrategy = false;
+    }
+    const clientRect = element.getBoundingClientRect();
+    const domElement = unwrapElement(element);
+    let scale = FALLBACK_SCALE;
+    if (includeScale) {
+      if (offsetParent) {
+        if (isElement(offsetParent)) {
+          scale = getScale(offsetParent);
+        }
+      } else {
+        scale = getScale(element);
+      }
+    }
+    const win = domElement ? getWindow(domElement) : window;
+    const addVisualOffsets = !isLayoutViewport() && isFixedStrategy;
+    let x = (clientRect.left + (addVisualOffsets ? ((_win$visualViewport = win.visualViewport) == null ? void 0 : _win$visualViewport.offsetLeft) || 0 : 0)) / scale.x;
+    let y = (clientRect.top + (addVisualOffsets ? ((_win$visualViewport2 = win.visualViewport) == null ? void 0 : _win$visualViewport2.offsetTop) || 0 : 0)) / scale.y;
+    let width = clientRect.width / scale.x;
+    let height = clientRect.height / scale.y;
+    if (domElement) {
+      const win = getWindow(domElement);
+      const offsetWin = offsetParent && isElement(offsetParent) ? getWindow(offsetParent) : offsetParent;
+      let currentIFrame = win.frameElement;
+      while (currentIFrame && offsetParent && offsetWin !== win) {
+        const iframeScale = getScale(currentIFrame);
+        const iframeRect = currentIFrame.getBoundingClientRect();
+        const css = getComputedStyle(currentIFrame);
+        iframeRect.x += (currentIFrame.clientLeft + parseFloat(css.paddingLeft)) * iframeScale.x;
+        iframeRect.y += (currentIFrame.clientTop + parseFloat(css.paddingTop)) * iframeScale.y;
+        x *= iframeScale.x;
+        y *= iframeScale.y;
+        width *= iframeScale.x;
+        height *= iframeScale.y;
+        x += iframeRect.x;
+        y += iframeRect.y;
+        currentIFrame = getWindow(currentIFrame).frameElement;
+      }
+    }
+    return {
+      width,
+      height,
+      top: y,
+      right: x + width,
+      bottom: y + height,
+      left: x,
+      x,
+      y
+    };
+  }
+
+  function getDocumentElement(node) {
+    return ((isNode(node) ? node.ownerDocument : node.document) || window.document).documentElement;
+  }
+
+  function getNodeScroll(element) {
+    if (isElement(element)) {
+      return {
+        scrollLeft: element.scrollLeft,
+        scrollTop: element.scrollTop
+      };
+    }
+    return {
+      scrollLeft: element.pageXOffset,
+      scrollTop: element.pageYOffset
+    };
+  }
+
+  function convertOffsetParentRelativeRectToViewportRelativeRect(_ref) {
+    let {
+      rect,
+      offsetParent,
+      strategy
+    } = _ref;
+    const isOffsetParentAnElement = isHTMLElement(offsetParent);
+    const documentElement = getDocumentElement(offsetParent);
+    if (offsetParent === documentElement) {
+      return rect;
+    }
+    let scroll = {
+      scrollLeft: 0,
+      scrollTop: 0
+    };
+    let scale = {
+      x: 1,
+      y: 1
+    };
+    const offsets = {
+      x: 0,
+      y: 0
+    };
+    if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+      if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+        scroll = getNodeScroll(offsetParent);
+      }
+      if (isHTMLElement(offsetParent)) {
+        const offsetRect = getBoundingClientRect(offsetParent);
+        scale = getScale(offsetParent);
+        offsets.x = offsetRect.x + offsetParent.clientLeft;
+        offsets.y = offsetRect.y + offsetParent.clientTop;
+      }
+    }
+    return {
+      width: rect.width * scale.x,
+      height: rect.height * scale.y,
+      x: rect.x * scale.x - scroll.scrollLeft * scale.x + offsets.x,
+      y: rect.y * scale.y - scroll.scrollTop * scale.y + offsets.y
+    };
+  }
+
+  function getWindowScrollBarX(element) {
+    // If <html> has a CSS width greater than the viewport, then this will be
+    // incorrect for RTL.
+    return getBoundingClientRect(getDocumentElement(element)).left + getNodeScroll(element).scrollLeft;
+  }
+
+  // Gets the entire size of the scrollable document area, even extending outside
+  // of the `<html>` and `<body>` rect bounds if horizontally scrollable.
+  function getDocumentRect(element) {
+    const html = getDocumentElement(element);
+    const scroll = getNodeScroll(element);
+    const body = element.ownerDocument.body;
+    const width = max(html.scrollWidth, html.clientWidth, body.scrollWidth, body.clientWidth);
+    const height = max(html.scrollHeight, html.clientHeight, body.scrollHeight, body.clientHeight);
+    let x = -scroll.scrollLeft + getWindowScrollBarX(element);
+    const y = -scroll.scrollTop;
+    if (getComputedStyle$1(body).direction === 'rtl') {
+      x += max(html.clientWidth, body.clientWidth) - width;
+    }
+    return {
+      width,
+      height,
+      x,
+      y
+    };
+  }
+
+  function getParentNode(node) {
+    if (getNodeName(node) === 'html') {
+      return node;
+    }
+    const result =
+    // Step into the shadow DOM of the parent of a slotted node.
+    node.assignedSlot ||
+    // DOM Element detected.
+    node.parentNode ||
+    // ShadowRoot detected.
+    isShadowRoot(node) && node.host ||
+    // Fallback.
+    getDocumentElement(node);
+    return isShadowRoot(result) ? result.host : result;
+  }
+
+  function getNearestOverflowAncestor(node) {
+    const parentNode = getParentNode(node);
+    if (isLastTraversableNode(parentNode)) {
+      // `getParentNode` will never return a `Document` due to the fallback
+      // check, so it's either the <html> or <body> element.
+      return parentNode.ownerDocument.body;
+    }
+    if (isHTMLElement(parentNode) && isOverflowElement(parentNode)) {
+      return parentNode;
+    }
+    return getNearestOverflowAncestor(parentNode);
+  }
+
+  function getOverflowAncestors(node, list) {
+    var _node$ownerDocument;
+    if (list === void 0) {
+      list = [];
+    }
+    const scrollableAncestor = getNearestOverflowAncestor(node);
+    const isBody = scrollableAncestor === ((_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.body);
+    const win = getWindow(scrollableAncestor);
+    if (isBody) {
+      return list.concat(win, win.visualViewport || [], isOverflowElement(scrollableAncestor) ? scrollableAncestor : []);
+    }
+    return list.concat(scrollableAncestor, getOverflowAncestors(scrollableAncestor));
+  }
+
+  function getViewportRect(element, strategy) {
+    const win = getWindow(element);
+    const html = getDocumentElement(element);
+    const visualViewport = win.visualViewport;
+    let width = html.clientWidth;
+    let height = html.clientHeight;
+    let x = 0;
+    let y = 0;
+    if (visualViewport) {
+      width = visualViewport.width;
+      height = visualViewport.height;
+      const layoutViewport = isLayoutViewport();
+      if (layoutViewport || !layoutViewport && strategy === 'fixed') {
+        x = visualViewport.offsetLeft;
+        y = visualViewport.offsetTop;
+      }
+    }
+    return {
+      width,
+      height,
+      x,
+      y
+    };
+  }
+
+  // Returns the inner client rect, subtracting scrollbars if present.
+  function getInnerBoundingClientRect(element, strategy) {
+    const clientRect = getBoundingClientRect(element, true, strategy === 'fixed');
+    const top = clientRect.top + element.clientTop;
+    const left = clientRect.left + element.clientLeft;
+    const scale = isHTMLElement(element) ? getScale(element) : {
+      x: 1,
+      y: 1
+    };
+    const width = element.clientWidth * scale.x;
+    const height = element.clientHeight * scale.y;
+    const x = left * scale.x;
+    const y = top * scale.y;
+    return {
+      width,
+      height,
+      x,
+      y
+    };
+  }
+  function getClientRectFromClippingAncestor(element, clippingAncestor, strategy) {
+    if (clippingAncestor === 'viewport') {
+      return core.rectToClientRect(getViewportRect(element, strategy));
+    }
+    if (isElement(clippingAncestor)) {
+      return core.rectToClientRect(getInnerBoundingClientRect(clippingAncestor, strategy));
+    }
+    return core.rectToClientRect(getDocumentRect(getDocumentElement(element)));
+  }
+
+  // A "clipping ancestor" is an `overflow` element with the characteristic of
+  // clipping (or hiding) child elements. This returns all clipping ancestors
+  // of the given element up the tree.
+  function getClippingElementAncestors(element, cache) {
+    const cachedResult = cache.get(element);
+    if (cachedResult) {
+      return cachedResult;
+    }
+    let result = getOverflowAncestors(element).filter(el => isElement(el) && getNodeName(el) !== 'body');
+    let currentContainingBlockComputedStyle = null;
+    const elementIsFixed = getComputedStyle$1(element).position === 'fixed';
+    let currentNode = elementIsFixed ? getParentNode(element) : element;
+
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+    while (isElement(currentNode) && !isLastTraversableNode(currentNode)) {
+      const computedStyle = getComputedStyle$1(currentNode);
+      const containingBlock = isContainingBlock(currentNode);
+      const shouldDropCurrentNode = elementIsFixed ? !containingBlock && !currentContainingBlockComputedStyle : !containingBlock && computedStyle.position === 'static' && !!currentContainingBlockComputedStyle && ['absolute', 'fixed'].includes(currentContainingBlockComputedStyle.position);
+      if (shouldDropCurrentNode) {
+        // Drop non-containing blocks.
+        result = result.filter(ancestor => ancestor !== currentNode);
+      } else {
+        // Record last containing block for next iteration.
+        currentContainingBlockComputedStyle = computedStyle;
+      }
+      currentNode = getParentNode(currentNode);
+    }
+    cache.set(element, result);
+    return result;
+  }
+
+  // Gets the maximum area that the element is visible in due to any number of
+  // clipping ancestors.
+  function getClippingRect(_ref) {
+    let {
+      element,
+      boundary,
+      rootBoundary,
+      strategy
+    } = _ref;
+    const elementClippingAncestors = boundary === 'clippingAncestors' ? getClippingElementAncestors(element, this._c) : [].concat(boundary);
+    const clippingAncestors = [...elementClippingAncestors, rootBoundary];
+    const firstClippingAncestor = clippingAncestors[0];
+    const clippingRect = clippingAncestors.reduce((accRect, clippingAncestor) => {
+      const rect = getClientRectFromClippingAncestor(element, clippingAncestor, strategy);
+      accRect.top = max(rect.top, accRect.top);
+      accRect.right = min(rect.right, accRect.right);
+      accRect.bottom = min(rect.bottom, accRect.bottom);
+      accRect.left = max(rect.left, accRect.left);
+      return accRect;
+    }, getClientRectFromClippingAncestor(element, firstClippingAncestor, strategy));
+    return {
+      width: clippingRect.right - clippingRect.left,
+      height: clippingRect.bottom - clippingRect.top,
+      x: clippingRect.left,
+      y: clippingRect.top
+    };
+  }
+
+  function getDimensions(element) {
+    if (isHTMLElement(element)) {
+      return getCssDimensions(element);
+    }
+    return element.getBoundingClientRect();
+  }
+
+  function getTrueOffsetParent(element) {
+    if (!isHTMLElement(element) || getComputedStyle$1(element).position === 'fixed') {
+      return null;
+    }
+    return element.offsetParent;
+  }
+  function getContainingBlock(element) {
+    let currentNode = getParentNode(element);
+    while (isHTMLElement(currentNode) && !isLastTraversableNode(currentNode)) {
+      if (isContainingBlock(currentNode)) {
+        return currentNode;
+      } else {
+        currentNode = getParentNode(currentNode);
+      }
+    }
+    return null;
+  }
+
+  // Gets the closest ancestor positioned element. Handles some edge cases,
+  // such as table ancestors and cross browser bugs.
+  function getOffsetParent(element) {
+    const window = getWindow(element);
+    let offsetParent = getTrueOffsetParent(element);
+    while (offsetParent && isTableElement(offsetParent) && getComputedStyle$1(offsetParent).position === 'static') {
+      offsetParent = getTrueOffsetParent(offsetParent);
+    }
+    if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle$1(offsetParent).position === 'static' && !isContainingBlock(offsetParent))) {
+      return window;
+    }
+    return offsetParent || getContainingBlock(element) || window;
+  }
+
+  function getRectRelativeToOffsetParent(element, offsetParent, strategy) {
+    const isOffsetParentAnElement = isHTMLElement(offsetParent);
+    const documentElement = getDocumentElement(offsetParent);
+    const rect = getBoundingClientRect(element, true, strategy === 'fixed', offsetParent);
+    let scroll = {
+      scrollLeft: 0,
+      scrollTop: 0
+    };
+    const offsets = {
+      x: 0,
+      y: 0
+    };
+    if (isOffsetParentAnElement || !isOffsetParentAnElement && strategy !== 'fixed') {
+      if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
+        scroll = getNodeScroll(offsetParent);
+      }
+      if (isHTMLElement(offsetParent)) {
+        const offsetRect = getBoundingClientRect(offsetParent, true);
+        offsets.x = offsetRect.x + offsetParent.clientLeft;
+        offsets.y = offsetRect.y + offsetParent.clientTop;
+      } else if (documentElement) {
+        offsets.x = getWindowScrollBarX(documentElement);
+      }
+    }
+    return {
+      x: rect.left + scroll.scrollLeft - offsets.x,
+      y: rect.top + scroll.scrollTop - offsets.y,
+      width: rect.width,
+      height: rect.height
+    };
+  }
+
+  const platform = {
+    getClippingRect,
+    convertOffsetParentRelativeRectToViewportRelativeRect,
+    isElement,
+    getDimensions,
+    getOffsetParent,
+    getDocumentElement,
+    getScale,
+    async getElementRects(_ref) {
+      let {
+        reference,
+        floating,
+        strategy
+      } = _ref;
+      const getOffsetParentFn = this.getOffsetParent || getOffsetParent;
+      const getDimensionsFn = this.getDimensions;
+      return {
+        reference: getRectRelativeToOffsetParent(reference, await getOffsetParentFn(floating), strategy),
+        floating: {
+          x: 0,
+          y: 0,
+          ...(await getDimensionsFn(floating))
+        }
+      };
+    },
+    getClientRects: element => Array.from(element.getClientRects()),
+    isRTL: element => getComputedStyle$1(element).direction === 'rtl'
+  };
+
+  /**
+   * Automatically updates the position of the floating element when necessary.
+   * @see https://floating-ui.com/docs/autoUpdate
+   */
+  function autoUpdate(reference, floating, update, options) {
+    if (options === void 0) {
+      options = {};
+    }
+    const {
+      ancestorScroll: _ancestorScroll = true,
+      ancestorResize = true,
+      elementResize = true,
+      animationFrame = false
+    } = options;
+    const ancestorScroll = _ancestorScroll && !animationFrame;
+    const ancestors = ancestorScroll || ancestorResize ? [...(isElement(reference) ? getOverflowAncestors(reference) : reference.contextElement ? getOverflowAncestors(reference.contextElement) : []), ...getOverflowAncestors(floating)] : [];
+    ancestors.forEach(ancestor => {
+      ancestorScroll && ancestor.addEventListener('scroll', update, {
+        passive: true
+      });
+      ancestorResize && ancestor.addEventListener('resize', update);
+    });
+    let observer = null;
+    if (elementResize) {
+      let initialUpdate = true;
+      observer = new ResizeObserver(() => {
+        if (!initialUpdate) {
+          update();
+        }
+        initialUpdate = false;
+      });
+      isElement(reference) && !animationFrame && observer.observe(reference);
+      if (!isElement(reference) && reference.contextElement && !animationFrame) {
+        observer.observe(reference.contextElement);
+      }
+      observer.observe(floating);
+    }
+    let frameId;
+    let prevRefRect = animationFrame ? getBoundingClientRect(reference) : null;
+    if (animationFrame) {
+      frameLoop();
+    }
+    function frameLoop() {
+      const nextRefRect = getBoundingClientRect(reference);
+      if (prevRefRect && (nextRefRect.x !== prevRefRect.x || nextRefRect.y !== prevRefRect.y || nextRefRect.width !== prevRefRect.width || nextRefRect.height !== prevRefRect.height)) {
+        update();
+      }
+      prevRefRect = nextRefRect;
+      frameId = requestAnimationFrame(frameLoop);
+    }
+    update();
+    return () => {
+      var _observer;
+      ancestors.forEach(ancestor => {
+        ancestorScroll && ancestor.removeEventListener('scroll', update);
+        ancestorResize && ancestor.removeEventListener('resize', update);
+      });
+      (_observer = observer) == null ? void 0 : _observer.disconnect();
+      observer = null;
+      if (animationFrame) {
+        cancelAnimationFrame(frameId);
+      }
+    };
+  }
+
+  /**
+   * Computes the `x` and `y` coordinates that will place the floating element
+   * next to a reference element when it is given a certain CSS positioning
+   * strategy.
+   */
+  const computePosition = (reference, floating, options) => {
+    // This caches the expensive `getClippingElementAncestors` function so that
+    // multiple lifecycle resets re-use the same result. It only lives for a
+    // single call. If other functions become expensive, we can add them as well.
+    const cache = new Map();
+    const mergedOptions = {
+      platform,
+      ...options
+    };
+    const platformWithCache = {
+      ...mergedOptions.platform,
+      _c: cache
+    };
+    return core.computePosition(reference, floating, {
+      ...mergedOptions,
+      platform: platformWithCache
+    });
+  };
+
+  Object.defineProperty(exports, 'arrow', {
+    enumerable: true,
+    get: function () { return core.arrow; }
+  });
+  Object.defineProperty(exports, 'autoPlacement', {
+    enumerable: true,
+    get: function () { return core.autoPlacement; }
+  });
+  Object.defineProperty(exports, 'detectOverflow', {
+    enumerable: true,
+    get: function () { return core.detectOverflow; }
+  });
+  Object.defineProperty(exports, 'flip', {
+    enumerable: true,
+    get: function () { return core.flip; }
+  });
+  Object.defineProperty(exports, 'hide', {
+    enumerable: true,
+    get: function () { return core.hide; }
+  });
+  Object.defineProperty(exports, 'inline', {
+    enumerable: true,
+    get: function () { return core.inline; }
+  });
+  Object.defineProperty(exports, 'limitShift', {
+    enumerable: true,
+    get: function () { return core.limitShift; }
+  });
+  Object.defineProperty(exports, 'offset', {
+    enumerable: true,
+    get: function () { return core.offset; }
+  });
+  Object.defineProperty(exports, 'shift', {
+    enumerable: true,
+    get: function () { return core.shift; }
+  });
+  Object.defineProperty(exports, 'size', {
+    enumerable: true,
+    get: function () { return core.size; }
+  });
+  exports.autoUpdate = autoUpdate;
+  exports.computePosition = computePosition;
+  exports.getOverflowAncestors = getOverflowAncestors;
+  exports.platform = platform;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+}));

praesentation/node_modules/@floating-ui/dom/index.d.ts

@@ -0,0 +1 @@
+export * from './src/types';

praesentation/node_modules/@floating-ui/dom/package.json

@@ -0,0 +1,74 @@
+{
+  "name": "@floating-ui/dom",
+  "version": "1.1.1",
+  "@rollingversions": {
+    "baseVersion": [
+      0,
+      1,
+      0
+    ]
+  },
+  "description": "Floating UI for the web",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "./dist/floating-ui.dom.umd.js",
+  "module": "./dist/floating-ui.dom.esm.js",
+  "unpkg": "./dist/floating-ui.dom.umd.min.js",
+  "types": "./index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./index.d.ts",
+      "import": {
+        "browser": {
+          "development": "./dist/floating-ui.dom.browser.mjs",
+          "default": "./dist/floating-ui.dom.browser.min.mjs"
+        },
+        "default": "./dist/floating-ui.dom.mjs"
+      },
+      "module": "./dist/floating-ui.dom.esm.js",
+      "default": "./dist/floating-ui.dom.umd.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "sideEffects": false,
+  "files": [
+    "dist/",
+    "index.d.ts",
+    "src/**/*.d.ts"
+  ],
+  "scripts": {
+    "dev": "parcel test/visual/index.html",
+    "build": "NODE_ENV=build rollup -c",
+    "test": "jest test/unit"
+  },
+  "author": "atomiks",
+  "license": "MIT",
+  "bugs": "https://github.com/floating-ui/floating-ui",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/floating-ui/floating-ui.git",
+    "directory": "packages/dom"
+  },
+  "homepage": "https://floating-ui.com",
+  "keywords": [
+    "tooltip",
+    "popover",
+    "dropdown",
+    "menu",
+    "popup",
+    "positioning"
+  ],
+  "dependencies": {
+    "@floating-ui/core": "^1.1.0"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.16.3",
+    "@types/react": "^18.0.1",
+    "concurrently": "^6.4.0",
+    "react": "^18.0.0",
+    "react-dom": "^18.0.0",
+    "react-router-dom": "^6.1.1",
+    "serve": "^13.0.2"
+  }
+}

praesentation/node_modules/@floating-ui/dom/src/autoUpdate.d.ts

@@ -0,0 +1,31 @@
+import type { FloatingElement, ReferenceElement } from './types';
+export interface Options {
+    /**
+     * Whether to update the position when an overflow ancestor is scrolled.
+     * @default true
+     */
+    ancestorScroll: boolean;
+    /**
+     * Whether to update the position when an overflow ancestor is resized. This
+     * uses the native `resize` event.
+     * @default true
+     */
+    ancestorResize: boolean;
+    /**
+     * Whether to update the position when either the reference or floating
+     * elements resized. This uses a `ResizeObserver`.
+     * @default true
+     */
+    elementResize: boolean;
+    /**
+     * Whether to update on every animation frame if necessary. Optimized for
+     * performance so updates are only called when necessary, but use sparingly.
+     * @default false
+     */
+    animationFrame: boolean;
+}
+/**
+ * Automatically updates the position of the floating element when necessary.
+ * @see https://floating-ui.com/docs/autoUpdate
+ */
+export declare function autoUpdate(reference: ReferenceElement, floating: FloatingElement, update: () => void, options?: Partial<Options>): () => void;

praesentation/node_modules/@floating-ui/dom/src/index.d.ts

@@ -0,0 +1,11 @@
+import type { ComputePositionConfig, FloatingElement, ReferenceElement } from './types';
+/**
+ * Computes the `x` and `y` coordinates that will place the floating element
+ * next to a reference element when it is given a certain CSS positioning
+ * strategy.
+ */
+export declare const computePosition: (reference: ReferenceElement, floating: FloatingElement, options?: Partial<ComputePositionConfig>) => Promise<import("@floating-ui/core").ComputePositionReturn>;
+export { autoUpdate } from './autoUpdate';
+export { platform } from './platform';
+export { getOverflowAncestors } from './utils/getOverflowAncestors';
+export { arrow, autoPlacement, detectOverflow, flip, hide, inline, limitShift, offset, shift, size, } from '@floating-ui/core';

praesentation/node_modules/@floating-ui/dom/src/platform.d.ts

@@ -0,0 +1,2 @@
+import type { Platform } from './types';
+export declare const platform: Platform;

praesentation/node_modules/@floating-ui/dom/src/types.d.ts

@@ -0,0 +1,128 @@
+import type { AutoPlacementOptions, ClientRectObject, ComputePositionConfig as CoreComputePositionConfig, DetectOverflowOptions as CoreDetectOverflowOptions, Dimensions, ElementRects, FlipOptions, HideOptions, Middleware as CoreMiddleware, MiddlewareArguments as CoreMiddlewareArguments, MiddlewareReturn, Padding, Rect, RootBoundary, ShiftOptions, SideObject, SizeOptions as CoreSizeOptions, Strategy } from '@floating-ui/core';
+type Promisable<T> = T | Promise<T>;
+export interface Platform {
+    getElementRects: (args: {
+        reference: ReferenceElement;
+        floating: FloatingElement;
+        strategy: Strategy;
+    }) => Promisable<ElementRects>;
+    getClippingRect: (args: {
+        element: Element;
+        boundary: Boundary;
+        rootBoundary: RootBoundary;
+        strategy: Strategy;
+    }) => Promisable<Rect>;
+    getDimensions: (element: Element) => Promisable<Dimensions>;
+    convertOffsetParentRelativeRectToViewportRelativeRect?: (args: {
+        rect: Rect;
+        offsetParent: Element;
+        strategy: Strategy;
+    }) => Promisable<Rect>;
+    getOffsetParent?: (element: Element) => Promisable<Element | Window>;
+    isElement?: (value: unknown) => Promisable<boolean>;
+    getDocumentElement?: (element: Element) => Promisable<HTMLElement>;
+    getClientRects?: (element: Element) => Promisable<Array<ClientRectObject>>;
+    isRTL?: (element: Element) => Promisable<boolean>;
+    getScale?: (element: HTMLElement) => Promisable<{
+        x: number;
+        y: number;
+    }>;
+}
+export interface NodeScroll {
+    scrollLeft: number;
+    scrollTop: number;
+}
+export type Boundary = 'clippingAncestors' | Element | Array<Element>;
+export type DetectOverflowOptions = Omit<CoreDetectOverflowOptions, 'boundary'> & {
+    boundary: Boundary;
+};
+export type SizeOptions = Omit<CoreSizeOptions, 'apply'> & {
+    /**
+     * Function that is called to perform style mutations to the floating element
+     * to change its size.
+     * @default undefined
+     */
+    apply(args: MiddlewareArguments & {
+        availableWidth: number;
+        availableHeight: number;
+    }): Promisable<void>;
+};
+export type ComputePositionConfig = Omit<CoreComputePositionConfig, 'middleware' | 'platform'> & {
+    middleware?: Array<Middleware | null | undefined | false>;
+    platform?: Platform;
+};
+/**
+ * Custom positioning reference element.
+ * @see https://floating-ui.com/docs/virtual-elements
+ */
+export interface VirtualElement {
+    getBoundingClientRect(): ClientRectObject;
+    contextElement?: Element;
+}
+export type ReferenceElement = Element | VirtualElement;
+export type FloatingElement = HTMLElement;
+export interface Elements {
+    reference: ReferenceElement;
+    floating: FloatingElement;
+}
+export type MiddlewareArguments = Omit<CoreMiddlewareArguments, 'elements'> & {
+    elements: Elements;
+};
+export type Middleware = Omit<CoreMiddleware, 'fn'> & {
+    fn(args: MiddlewareArguments): Promisable<MiddlewareReturn>;
+};
+/**
+ * Automatically chooses the `placement` which has the most space available.
+ * @see https://floating-ui.com/docs/autoPlacement
+ */
+declare const autoPlacement: (options?: Partial<AutoPlacementOptions & DetectOverflowOptions>) => Middleware;
+/**
+ * Shifts the floating element in order to keep it in view when it will overflow
+ * a clipping boundary.
+ * @see https://floating-ui.com/docs/shift
+ */
+declare const shift: (options?: Partial<ShiftOptions & DetectOverflowOptions>) => Middleware;
+/**
+ * Changes the placement of the floating element to one that will fit if the
+ * initially specified `placement` does not.
+ * @see https://floating-ui.com/docs/flip
+ */
+declare const flip: (options?: Partial<FlipOptions & DetectOverflowOptions>) => Middleware;
+/**
+ * Provides data to change the size of the floating element. For instance,
+ * prevent it from overflowing its clipping boundary or match the width of the
+ * reference element.
+ * @see https://floating-ui.com/docs/size
+ */
+declare const size: (options?: Partial<SizeOptions & DetectOverflowOptions>) => Middleware;
+/**
+ * Positions an inner element of the floating element such that it is centered
+ * to the reference element.
+ * @see https://floating-ui.com/docs/arrow
+ */
+declare const arrow: (options: {
+    element: Element;
+    padding?: Padding;
+}) => Middleware;
+/**
+ * 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
+ */
+declare const hide: (options?: Partial<HideOptions & DetectOverflowOptions>) => Middleware;
+/**
+ * Resolves with an object of overflow side offsets that determine how much the
+ * element is overflowing a given clipping boundary.
+ * - 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
+ */
+declare const detectOverflow: (middlewareArguments: MiddlewareArguments, options?: Partial<DetectOverflowOptions>) => Promise<SideObject>;
+export { arrow, autoPlacement, detectOverflow, flip, hide, shift, size };
+export { computePosition } from './';
+export { autoUpdate, Options as AutoUpdateOptions } from './autoUpdate';
+export { platform } from './platform';
+export { getOverflowAncestors } from './utils/getOverflowAncestors';
+export type { AlignedPlacement, Alignment, Axis, ClientRectObject, ComputePositionReturn, Coords, Dimensions, ElementContext, ElementRects, Length, MiddlewareData, MiddlewareReturn, Padding, Placement, Rect, RootBoundary, Side, SideObject, Strategy, } from '@floating-ui/core';
+export { inline, limitShift, offset } from '@floating-ui/core';

praesentation/node_modules/@floating-ui/dom/src/utils/convertOffsetParentRelativeRectToViewportRelativeRect.d.ts

@@ -0,0 +1,6 @@
+import type { Rect, Strategy } from '@floating-ui/core';
+export declare function convertOffsetParentRelativeRectToViewportRelativeRect({ rect, offsetParent, strategy, }: {
+    rect: Rect;
+    offsetParent: Element | Window;
+    strategy: Strategy;
+}): Rect;

praesentation/node_modules/@floating-ui/dom/src/utils/getBoundingClientRect.d.ts

@@ -0,0 +1,2 @@
+import type { ClientRectObject, VirtualElement } from '@floating-ui/core';
+export declare function getBoundingClientRect(element: Element | VirtualElement, includeScale?: boolean, isFixedStrategy?: boolean, offsetParent?: Element | Window): ClientRectObject;

praesentation/node_modules/@floating-ui/dom/src/utils/getClippingRect.d.ts

@@ -0,0 +1,12 @@
+import type { Boundary, Rect, RootBoundary, Strategy } from '@floating-ui/core';
+import { Platform, ReferenceElement } from '../types';
+type PlatformWithCache = Platform & {
+    _c: Map<ReferenceElement, Element[]>;
+};
+export declare function getClippingRect(this: PlatformWithCache, { element, boundary, rootBoundary, strategy, }: {
+    element: Element;
+    boundary: Boundary;
+    rootBoundary: RootBoundary;
+    strategy: Strategy;
+}): Rect;
+export {};

praesentation/node_modules/@floating-ui/dom/src/utils/getComputedStyle.d.ts

@@ -0,0 +1 @@
+export declare function getComputedStyle(element: Element): CSSStyleDeclaration;

praesentation/node_modules/@floating-ui/dom/src/utils/getCssDimensions.d.ts

@@ -0,0 +1,4 @@
+import type { Dimensions } from '@floating-ui/core';
+export declare function getCssDimensions(element: HTMLElement): Dimensions & {
+    fallback: boolean;
+};

praesentation/node_modules/@floating-ui/dom/src/utils/getDimensions.d.ts

@@ -0,0 +1,2 @@
+import type { Dimensions } from '@floating-ui/core';
+export declare function getDimensions(element: Element): Dimensions;

praesentation/node_modules/@floating-ui/dom/src/utils/getDocumentElement.d.ts

@@ -0,0 +1 @@
+export declare function getDocumentElement(node: Node | Window): HTMLElement;

praesentation/node_modules/@floating-ui/dom/src/utils/getDocumentRect.d.ts

@@ -0,0 +1,2 @@
+import type { Rect } from '@floating-ui/core';
+export declare function getDocumentRect(element: HTMLElement): Rect;

praesentation/node_modules/@floating-ui/dom/src/utils/getNearestOverflowAncestor.d.ts

@@ -0,0 +1 @@
+export declare function getNearestOverflowAncestor(node: Node): HTMLElement;

praesentation/node_modules/@floating-ui/dom/src/utils/getNodeName.d.ts

@@ -0,0 +1 @@
+export declare function getNodeName(node: Node | Window): string;

praesentation/node_modules/@floating-ui/dom/src/utils/getNodeScroll.d.ts

@@ -0,0 +1,2 @@
+import { NodeScroll } from '../types';
+export declare function getNodeScroll(element: Element | Window): NodeScroll;

praesentation/node_modules/@floating-ui/dom/src/utils/getOffsetParent.d.ts

@@ -0,0 +1 @@
+export declare function getOffsetParent(element: Element): Element | Window;

praesentation/node_modules/@floating-ui/dom/src/utils/getOverflowAncestors.d.ts

@@ -0,0 +1,3 @@
+type OverflowAncestors = Array<Element | Window | VisualViewport>;
+export declare function getOverflowAncestors(node: Node, list?: OverflowAncestors): OverflowAncestors;
+export {};

praesentation/node_modules/@floating-ui/dom/src/utils/getParentNode.d.ts

@@ -0,0 +1 @@
+export declare function getParentNode(node: Node): Node;

praesentation/node_modules/@floating-ui/dom/src/utils/getRectRelativeToOffsetParent.d.ts

@@ -0,0 +1,2 @@
+import type { Rect, Strategy, VirtualElement } from '@floating-ui/core';
+export declare function getRectRelativeToOffsetParent(element: Element | VirtualElement, offsetParent: Element | Window, strategy: Strategy): Rect;

praesentation/node_modules/@floating-ui/dom/src/utils/getScale.d.ts

@@ -0,0 +1,7 @@
+import type { Coords } from '@floating-ui/core';
+import type { VirtualElement } from '../types';
+export declare const FALLBACK_SCALE: {
+    x: number;
+    y: number;
+};
+export declare function getScale(element: Element | VirtualElement): Coords;

praesentation/node_modules/@floating-ui/dom/src/utils/getViewportRect.d.ts

@@ -0,0 +1,2 @@
+import type { Rect, Strategy } from '@floating-ui/core';
+export declare function getViewportRect(element: Element, strategy: Strategy): Rect;

praesentation/node_modules/@floating-ui/dom/src/utils/getWindowScrollBarX.d.ts

@@ -0,0 +1 @@
+export declare function getWindowScrollBarX(element: Element): number;

praesentation/node_modules/@floating-ui/dom/src/utils/is.d.ts

@@ -0,0 +1,17 @@
+declare global {
+    interface Window {
+        HTMLElement: any;
+        Element: any;
+        Node: any;
+        ShadowRoot: any;
+    }
+}
+export declare function isHTMLElement(value: any): value is HTMLElement;
+export declare function isElement(value: any): value is Element;
+export declare function isNode(value: any): value is Node;
+export declare function isShadowRoot(node: Node): node is ShadowRoot;
+export declare function isOverflowElement(element: Element): boolean;
+export declare function isTableElement(element: Element): boolean;
+export declare function isContainingBlock(element: Element): boolean;
+export declare function isLayoutViewport(): boolean;
+export declare function isLastTraversableNode(node: Node): boolean;

praesentation/node_modules/@floating-ui/dom/src/utils/math.d.ts

@@ -0,0 +1,3 @@
+export declare const min: (...values: number[]) => number;
+export declare const max: (...values: number[]) => number;
+export declare const round: (x: number) => number;

praesentation/node_modules/@floating-ui/dom/src/utils/unwrapElement.d.ts

@@ -0,0 +1,2 @@
+import type { VirtualElement } from '../types';
+export declare function unwrapElement(element: Element | VirtualElement): Element | undefined;

praesentation/node_modules/@floating-ui/dom/src/utils/userAgent.d.ts

@@ -0,0 +1 @@
+export declare function getUAString(): string;

praesentation/node_modules/@floating-ui/dom/src/utils/window.d.ts

@@ -0,0 +1 @@
+export declare function getWindow(node: Node): Window;