Source: infra-sk/dist/confirm-dialog-sk-bundle.js

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/***/ "../node_modules/common-sk/modules/dom.js":
/*!************************************************!*\
  !*** ../node_modules/common-sk/modules/dom.js ***!
  \************************************************/
/*! exports provided: DomReady, $, $$, findParent, findParentSafe */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "DomReady", function() { return DomReady; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "$", function() { return $; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "$$", function() { return $$; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "findParent", function() { return findParent; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "findParentSafe", function() { return findParentSafe; });
// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/** @module common-sk/modules/dom */
/**
 * A Promise that resolves when DOMContentLoaded has fired.
 */
const DomReady = new Promise((resolve) => {
    if (document.readyState !== 'loading') {
        // If readyState is already past loading then
        // DOMContentLoaded has already fired, so just resolve.
        resolve();
    }
    else {
        document.addEventListener('DOMContentLoaded', resolve);
    }
});
/** @function $
 *
 * @description Returns a real JS array of DOM elements that match the CSS selector.
 *
 * @param query CSS selector string.
 * @param ele The Element to start the search from.
 * @returns Array of DOM Elements that match the CSS selector.
 *
 */
function $(query, ele = document) {
    return Array.from(ele.querySelectorAll(query));
}
/** @function $$
 *
 * @description Returns the first DOM element that matches the CSS query selector.
 *
 * @param query CSS selector string.
 * @param ele The Element to start the search from.
 * @returns The first Element in DOM order that matches the CSS selector.
 */
function $$(query, ele = document) {
    return ele.querySelector(query);
}
/**
 * Find the first parent of 'ele' with the given 'nodeName'.
 *
 * @param ele - The element to start searching a.
 * @param nodeName - The node name we are looking for.
 * @returns Either 'ele' or the first parent of 'ele' that has the nodeName of 'nodeName'. Returns null if none are found.
 *
 * @example
 *
 *   findParent(ele, 'DIV')
 *
 */
function findParent(ele, nodeName) {
    while (ele !== null) {
        if (ele.nodeName === nodeName) {
            return ele;
        }
        ele = ele.parentElement;
    }
    return null;
}
/**
 * Find the first parent of 'ele' with the given 'nodeName'. Just like findParent, but TypeScript typesafe.
 *
 * @param ele - The element to start searching a.
 * @param nodeName - The lower-case node name we are looking for, e.g. 'div'.
 * @returns Either 'ele' or the first parent of 'ele' that has the nodeName of 'nodeName'. Returns null if none are found.
 *
 * @example
 *
 *   findParentSafe(ele, 'div')
 *
 */
function findParentSafe(ele, nodeName) {
    while (ele !== null) {
        if (ele.nodeName.toLowerCase() === nodeName) {
            return ele;
        }
        ele = ele.parentElement;
    }
    return null;
}
//# sourceMappingURL=dom.js.map

/***/ }),

/***/ "../node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js":
/*!*******************************************************************!*\
  !*** ../node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js ***!
  \*******************************************************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
// nb. This is for IE10 and lower _only_.
var supportCustomEvent = window.CustomEvent;
if (!supportCustomEvent || typeof supportCustomEvent === 'object') {
  supportCustomEvent = function CustomEvent(event, x) {
    x = x || {};
    var ev = document.createEvent('CustomEvent');
    ev.initCustomEvent(event, !!x.bubbles, !!x.cancelable, x.detail || null);
    return ev;
  };
  supportCustomEvent.prototype = window.Event.prototype;
}

/**
 * Dispatches the passed event to both an "on<type>" handler as well as via the
 * normal dispatch operation. Does not bubble.
 *
 * @param {!EventTarget} target
 * @param {!Event} event
 * @return {boolean}
 */
function safeDispatchEvent(target, event) {
  var check = 'on' + event.type.toLowerCase();
  if (typeof target[check] === 'function') {
    target[check](event);
  }
  return target.dispatchEvent(event);
}

/**
 * @param {Element} el to check for stacking context
 * @return {boolean} whether this el or its parents creates a stacking context
 */
function createsStackingContext(el) {
  while (el && el !== document.body) {
    var s = window.getComputedStyle(el);
    var invalid = function(k, ok) {
      return !(s[k] === undefined || s[k] === ok);
    };

    if (s.opacity < 1 ||
        invalid('zIndex', 'auto') ||
        invalid('transform', 'none') ||
        invalid('mixBlendMode', 'normal') ||
        invalid('filter', 'none') ||
        invalid('perspective', 'none') ||
        s['isolation'] === 'isolate' ||
        s.position === 'fixed' ||
        s.webkitOverflowScrolling === 'touch') {
      return true;
    }
    el = el.parentElement;
  }
  return false;
}

/**
 * Finds the nearest <dialog> from the passed element.
 *
 * @param {Element} el to search from
 * @return {HTMLDialogElement} dialog found
 */
function findNearestDialog(el) {
  while (el) {
    if (el.localName === 'dialog') {
      return /** @type {HTMLDialogElement} */ (el);
    }
    if (el.parentElement) {
      el = el.parentElement;
    } else if (el.parentNode) {
      el = el.parentNode.host;
    } else {
      el = null;
    }
  }
  return null;
}

/**
 * Blur the specified element, as long as it's not the HTML body element.
 * This works around an IE9/10 bug - blurring the body causes Windows to
 * blur the whole application.
 *
 * @param {Element} el to blur
 */
function safeBlur(el) {
  // Find the actual focused element when the active element is inside a shadow root
  while (el && el.shadowRoot && el.shadowRoot.activeElement) {
    el = el.shadowRoot.activeElement;
  }

  if (el && el.blur && el !== document.body) {
    el.blur();
  }
}

/**
 * @param {!NodeList} nodeList to search
 * @param {Node} node to find
 * @return {boolean} whether node is inside nodeList
 */
function inNodeList(nodeList, node) {
  for (var i = 0; i < nodeList.length; ++i) {
    if (nodeList[i] === node) {
      return true;
    }
  }
  return false;
}

/**
 * @param {HTMLFormElement} el to check
 * @return {boolean} whether this form has method="dialog"
 */
function isFormMethodDialog(el) {
  if (!el || !el.hasAttribute('method')) {
    return false;
  }
  return el.getAttribute('method').toLowerCase() === 'dialog';
}

/**
 * @param {!DocumentFragment|!Element} hostElement
 * @return {?Element}
 */
function findFocusableElementWithin(hostElement) {
  // Note that this is 'any focusable area'. This list is probably not exhaustive, but the
  // alternative involves stepping through and trying to focus everything.
  var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
  var query = opts.map(function(el) {
    return el + ':not([disabled])';
  });
  // TODO(samthor): tabindex values that are not numeric are not focusable.
  query.push('[tabindex]:not([disabled]):not([tabindex=""])');  // tabindex != "", not disabled
  var target = hostElement.querySelector(query.join(', '));

  if (!target && 'attachShadow' in Element.prototype) {
    // If we haven't found a focusable target, see if the host element contains an element
    // which has a shadowRoot.
    // Recursively search for the first focusable item in shadow roots.
    var elems = hostElement.querySelectorAll('*');
    for (var i = 0; i < elems.length; i++) {
      if (elems[i].tagName && elems[i].shadowRoot) {
        target = findFocusableElementWithin(elems[i].shadowRoot);
        if (target) {
          break;
        }
      }
    }
  }
  return target;
}

/**
 * Determines if an element is attached to the DOM.
 * @param {Element} element to check
 * @return {boolean} whether the element is in DOM
 */
function isConnected(element) {
  return element.isConnected || document.body.contains(element);
}

/**
 * @param {!Event} event
 * @return {?Element}
 */
function findFormSubmitter(event) {
  if (event.submitter) {
    return event.submitter;
  }

  var form = event.target;
  if (!(form instanceof HTMLFormElement)) {
    return null;
  }

  var submitter = dialogPolyfill.formSubmitter;
  if (!submitter) {
    var target = event.target;
    var root = ('getRootNode' in target && target.getRootNode() || document);
    submitter = root.activeElement;
  }

  if (!submitter || submitter.form !== form) {
    return null;
  }
  return submitter;
}

/**
 * @param {!Event} event
 */
function maybeHandleSubmit(event) {
  if (event.defaultPrevented) {
    return;
  }
  var form = /** @type {!HTMLFormElement} */ (event.target);

  // We'd have a value if we clicked on an imagemap.
  var value = dialogPolyfill.imagemapUseValue;
  var submitter = findFormSubmitter(event);
  if (value === null && submitter) {
    value = submitter.value;
  }

  // There should always be a dialog as this handler is added specifically on them, but check just
  // in case.
  var dialog = findNearestDialog(form);
  if (!dialog) {
    return;
  }

  // Prefer formmethod on the button.
  var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
  if (formmethod !== 'dialog') {
    return;
  }
  event.preventDefault();

  if (value != null) {
    // nb. we explicitly check against null/undefined
    dialog.close(value);
  } else {
    dialog.close();
  }
}

/**
 * @param {!HTMLDialogElement} dialog to upgrade
 * @constructor
 */
function dialogPolyfillInfo(dialog) {
  this.dialog_ = dialog;
  this.replacedStyleTop_ = false;
  this.openAsModal_ = false;

  // Set a11y role. Browsers that support dialog implicitly know this already.
  if (!dialog.hasAttribute('role')) {
    dialog.setAttribute('role', 'dialog');
  }

  dialog.show = this.show.bind(this);
  dialog.showModal = this.showModal.bind(this);
  dialog.close = this.close.bind(this);

  dialog.addEventListener('submit', maybeHandleSubmit, false);

  if (!('returnValue' in dialog)) {
    dialog.returnValue = '';
  }

  if ('MutationObserver' in window) {
    var mo = new MutationObserver(this.maybeHideModal.bind(this));
    mo.observe(dialog, {attributes: true, attributeFilter: ['open']});
  } else {
    // IE10 and below support. Note that DOMNodeRemoved etc fire _before_ removal. They also
    // seem to fire even if the element was removed as part of a parent removal. Use the removed
    // events to force downgrade (useful if removed/immediately added).
    var removed = false;
    var cb = function() {
      removed ? this.downgradeModal() : this.maybeHideModal();
      removed = false;
    }.bind(this);
    var timeout;
    var delayModel = function(ev) {
      if (ev.target !== dialog) { return; }  // not for a child element
      var cand = 'DOMNodeRemoved';
      removed |= (ev.type.substr(0, cand.length) === cand);
      window.clearTimeout(timeout);
      timeout = window.setTimeout(cb, 0);
    };
    ['DOMAttrModified', 'DOMNodeRemoved', 'DOMNodeRemovedFromDocument'].forEach(function(name) {
      dialog.addEventListener(name, delayModel);
    });
  }
  // Note that the DOM is observed inside DialogManager while any dialog
  // is being displayed as a modal, to catch modal removal from the DOM.

  Object.defineProperty(dialog, 'open', {
    set: this.setOpen.bind(this),
    get: dialog.hasAttribute.bind(dialog, 'open')
  });

  this.backdrop_ = document.createElement('div');
  this.backdrop_.className = 'backdrop';
  this.backdrop_.addEventListener('mouseup'  , this.backdropMouseEvent_.bind(this));
  this.backdrop_.addEventListener('mousedown', this.backdropMouseEvent_.bind(this));
  this.backdrop_.addEventListener('click'    , this.backdropMouseEvent_.bind(this));
}

dialogPolyfillInfo.prototype = /** @type {HTMLDialogElement.prototype} */ ({

  get dialog() {
    return this.dialog_;
  },

  /**
   * Maybe remove this dialog from the modal top layer. This is called when
   * a modal dialog may no longer be tenable, e.g., when the dialog is no
   * longer open or is no longer part of the DOM.
   */
  maybeHideModal: function() {
    if (this.dialog_.hasAttribute('open') && isConnected(this.dialog_)) { return; }
    this.downgradeModal();
  },

  /**
   * Remove this dialog from the modal top layer, leaving it as a non-modal.
   */
  downgradeModal: function() {
    if (!this.openAsModal_) { return; }
    this.openAsModal_ = false;
    this.dialog_.style.zIndex = '';

    // This won't match the native <dialog> exactly because if the user set top on a centered
    // polyfill dialog, that top gets thrown away when the dialog is closed. Not sure it's
    // possible to polyfill this perfectly.
    if (this.replacedStyleTop_) {
      this.dialog_.style.top = '';
      this.replacedStyleTop_ = false;
    }

    // Clear the backdrop and remove from the manager.
    this.backdrop_.parentNode && this.backdrop_.parentNode.removeChild(this.backdrop_);
    dialogPolyfill.dm.removeDialog(this);
  },

  /**
   * @param {boolean} value whether to open or close this dialog
   */
  setOpen: function(value) {
    if (value) {
      this.dialog_.hasAttribute('open') || this.dialog_.setAttribute('open', '');
    } else {
      this.dialog_.removeAttribute('open');
      this.maybeHideModal();  // nb. redundant with MutationObserver
    }
  },

  /**
   * Handles mouse events ('mouseup', 'mousedown', 'click') on the fake .backdrop element, redirecting them as if
   * they were on the dialog itself.
   *
   * @param {!Event} e to redirect
   */
  backdropMouseEvent_: function(e) {
    if (!this.dialog_.hasAttribute('tabindex')) {
      // Clicking on the backdrop should move the implicit cursor, even if dialog cannot be
      // focused. Create a fake thing to focus on. If the backdrop was _before_ the dialog, this
      // would not be needed - clicks would move the implicit cursor there.
      var fake = document.createElement('div');
      this.dialog_.insertBefore(fake, this.dialog_.firstChild);
      fake.tabIndex = -1;
      fake.focus();
      this.dialog_.removeChild(fake);
    } else {
      this.dialog_.focus();
    }

    var redirectedEvent = document.createEvent('MouseEvents');
    redirectedEvent.initMouseEvent(e.type, e.bubbles, e.cancelable, window,
        e.detail, e.screenX, e.screenY, e.clientX, e.clientY, e.ctrlKey,
        e.altKey, e.shiftKey, e.metaKey, e.button, e.relatedTarget);
    this.dialog_.dispatchEvent(redirectedEvent);
    e.stopPropagation();
  },

  /**
   * Focuses on the first focusable element within the dialog. This will always blur the current
   * focus, even if nothing within the dialog is found.
   */
  focus_: function() {
    // Find element with `autofocus` attribute, or fall back to the first form/tabindex control.
    var target = this.dialog_.querySelector('[autofocus]:not([disabled])');
    if (!target && this.dialog_.tabIndex >= 0) {
      target = this.dialog_;
    }
    if (!target) {
      target = findFocusableElementWithin(this.dialog_);
    }
    safeBlur(document.activeElement);
    target && target.focus();
  },

  /**
   * Sets the zIndex for the backdrop and dialog.
   *
   * @param {number} dialogZ
   * @param {number} backdropZ
   */
  updateZIndex: function(dialogZ, backdropZ) {
    if (dialogZ < backdropZ) {
      throw new Error('dialogZ should never be < backdropZ');
    }
    this.dialog_.style.zIndex = dialogZ;
    this.backdrop_.style.zIndex = backdropZ;
  },

  /**
   * Shows the dialog. If the dialog is already open, this does nothing.
   */
  show: function() {
    if (!this.dialog_.open) {
      this.setOpen(true);
      this.focus_();
    }
  },

  /**
   * Show this dialog modally.
   */
  showModal: function() {
    if (this.dialog_.hasAttribute('open')) {
      throw new Error('Failed to execute \'showModal\' on dialog: The element is already open, and therefore cannot be opened modally.');
    }
    if (!isConnected(this.dialog_)) {
      throw new Error('Failed to execute \'showModal\' on dialog: The element is not in a Document.');
    }
    if (!dialogPolyfill.dm.pushDialog(this)) {
      throw new Error('Failed to execute \'showModal\' on dialog: There are too many open modal dialogs.');
    }

    if (createsStackingContext(this.dialog_.parentElement)) {
      console.warn('A dialog is being shown inside a stacking context. ' +
          'This may cause it to be unusable. For more information, see this link: ' +
          'https://github.com/GoogleChrome/dialog-polyfill/#stacking-context');
    }

    this.setOpen(true);
    this.openAsModal_ = true;

    // Optionally center vertically, relative to the current viewport.
    if (dialogPolyfill.needsCentering(this.dialog_)) {
      dialogPolyfill.reposition(this.dialog_);
      this.replacedStyleTop_ = true;
    } else {
      this.replacedStyleTop_ = false;
    }

    // Insert backdrop.
    this.dialog_.parentNode.insertBefore(this.backdrop_, this.dialog_.nextSibling);

    // Focus on whatever inside the dialog.
    this.focus_();
  },

  /**
   * Closes this HTMLDialogElement. This is optional vs clearing the open
   * attribute, however this fires a 'close' event.
   *
   * @param {string=} opt_returnValue to use as the returnValue
   */
  close: function(opt_returnValue) {
    if (!this.dialog_.hasAttribute('open')) {
      throw new Error('Failed to execute \'close\' on dialog: The element does not have an \'open\' attribute, and therefore cannot be closed.');
    }
    this.setOpen(false);

    // Leave returnValue untouched in case it was set directly on the element
    if (opt_returnValue !== undefined) {
      this.dialog_.returnValue = opt_returnValue;
    }

    // Triggering "close" event for any attached listeners on the <dialog>.
    var closeEvent = new supportCustomEvent('close', {
      bubbles: false,
      cancelable: false
    });
    safeDispatchEvent(this.dialog_, closeEvent);
  }

});

var dialogPolyfill = {};

dialogPolyfill.reposition = function(element) {
  var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
  var topValue = scrollTop + (window.innerHeight - element.offsetHeight) / 2;
  element.style.top = Math.max(scrollTop, topValue) + 'px';
};

dialogPolyfill.isInlinePositionSetByStylesheet = function(element) {
  for (var i = 0; i < document.styleSheets.length; ++i) {
    var styleSheet = document.styleSheets[i];
    var cssRules = null;
    // Some browsers throw on cssRules.
    try {
      cssRules = styleSheet.cssRules;
    } catch (e) {}
    if (!cssRules) { continue; }
    for (var j = 0; j < cssRules.length; ++j) {
      var rule = cssRules[j];
      var selectedNodes = null;
      // Ignore errors on invalid selector texts.
      try {
        selectedNodes = document.querySelectorAll(rule.selectorText);
      } catch(e) {}
      if (!selectedNodes || !inNodeList(selectedNodes, element)) {
        continue;
      }
      var cssTop = rule.style.getPropertyValue('top');
      var cssBottom = rule.style.getPropertyValue('bottom');
      if ((cssTop && cssTop !== 'auto') || (cssBottom && cssBottom !== 'auto')) {
        return true;
      }
    }
  }
  return false;
};

dialogPolyfill.needsCentering = function(dialog) {
  var computedStyle = window.getComputedStyle(dialog);
  if (computedStyle.position !== 'absolute') {
    return false;
  }

  // We must determine whether the top/bottom specified value is non-auto.  In
  // WebKit/Blink, checking computedStyle.top == 'auto' is sufficient, but
  // Firefox returns the used value. So we do this crazy thing instead: check
  // the inline style and then go through CSS rules.
  if ((dialog.style.top !== 'auto' && dialog.style.top !== '') ||
      (dialog.style.bottom !== 'auto' && dialog.style.bottom !== '')) {
    return false;
  }
  return !dialogPolyfill.isInlinePositionSetByStylesheet(dialog);
};

/**
 * @param {!Element} element to force upgrade
 */
dialogPolyfill.forceRegisterDialog = function(element) {
  if (window.HTMLDialogElement || element.showModal) {
    console.warn('This browser already supports <dialog>, the polyfill ' +
        'may not work correctly', element);
  }
  if (element.localName !== 'dialog') {
    throw new Error('Failed to register dialog: The element is not a dialog.');
  }
  new dialogPolyfillInfo(/** @type {!HTMLDialogElement} */ (element));
};

/**
 * @param {!Element} element to upgrade, if necessary
 */
dialogPolyfill.registerDialog = function(element) {
  if (!element.showModal) {
    dialogPolyfill.forceRegisterDialog(element);
  }
};

/**
 * @constructor
 */
dialogPolyfill.DialogManager = function() {
  /** @type {!Array<!dialogPolyfillInfo>} */
  this.pendingDialogStack = [];

  var checkDOM = this.checkDOM_.bind(this);

  // The overlay is used to simulate how a modal dialog blocks the document.
  // The blocking dialog is positioned on top of the overlay, and the rest of
  // the dialogs on the pending dialog stack are positioned below it. In the
  // actual implementation, the modal dialog stacking is controlled by the
  // top layer, where z-index has no effect.
  this.overlay = document.createElement('div');
  this.overlay.className = '_dialog_overlay';
  this.overlay.addEventListener('click', function(e) {
    this.forwardTab_ = undefined;
    e.stopPropagation();
    checkDOM([]);  // sanity-check DOM
  }.bind(this));

  this.handleKey_ = this.handleKey_.bind(this);
  this.handleFocus_ = this.handleFocus_.bind(this);

  this.zIndexLow_ = 100000;
  this.zIndexHigh_ = 100000 + 150;

  this.forwardTab_ = undefined;

  if ('MutationObserver' in window) {
    this.mo_ = new MutationObserver(function(records) {
      var removed = [];
      records.forEach(function(rec) {
        for (var i = 0, c; c = rec.removedNodes[i]; ++i) {
          if (!(c instanceof Element)) {
            continue;
          } else if (c.localName === 'dialog') {
            removed.push(c);
          }
          removed = removed.concat(c.querySelectorAll('dialog'));
        }
      });
      removed.length && checkDOM(removed);
    });
  }
};

/**
 * Called on the first modal dialog being shown. Adds the overlay and related
 * handlers.
 */
dialogPolyfill.DialogManager.prototype.blockDocument = function() {
  document.documentElement.addEventListener('focus', this.handleFocus_, true);
  document.addEventListener('keydown', this.handleKey_);
  this.mo_ && this.mo_.observe(document, {childList: true, subtree: true});
};

/**
 * Called on the first modal dialog being removed, i.e., when no more modal
 * dialogs are visible.
 */
dialogPolyfill.DialogManager.prototype.unblockDocument = function() {
  document.documentElement.removeEventListener('focus', this.handleFocus_, true);
  document.removeEventListener('keydown', this.handleKey_);
  this.mo_ && this.mo_.disconnect();
};

/**
 * Updates the stacking of all known dialogs.
 */
dialogPolyfill.DialogManager.prototype.updateStacking = function() {
  var zIndex = this.zIndexHigh_;

  for (var i = 0, dpi; dpi = this.pendingDialogStack[i]; ++i) {
    dpi.updateZIndex(--zIndex, --zIndex);
    if (i === 0) {
      this.overlay.style.zIndex = --zIndex;
    }
  }

  // Make the overlay a sibling of the dialog itself.
  var last = this.pendingDialogStack[0];
  if (last) {
    var p = last.dialog.parentNode || document.body;
    p.appendChild(this.overlay);
  } else if (this.overlay.parentNode) {
    this.overlay.parentNode.removeChild(this.overlay);
  }
};

/**
 * @param {Element} candidate to check if contained or is the top-most modal dialog
 * @return {boolean} whether candidate is contained in top dialog
 */
dialogPolyfill.DialogManager.prototype.containedByTopDialog_ = function(candidate) {
  while (candidate = findNearestDialog(candidate)) {
    for (var i = 0, dpi; dpi = this.pendingDialogStack[i]; ++i) {
      if (dpi.dialog === candidate) {
        return i === 0;  // only valid if top-most
      }
    }
    candidate = candidate.parentElement;
  }
  return false;
};

dialogPolyfill.DialogManager.prototype.handleFocus_ = function(event) {
  var target = event.composedPath ? event.composedPath()[0] : event.target;

  if (this.containedByTopDialog_(target)) { return; }

  if (document.activeElement === document.documentElement) { return; }

  event.preventDefault();
  event.stopPropagation();
  safeBlur(/** @type {Element} */ (target));

  if (this.forwardTab_ === undefined) { return; }  // move focus only from a tab key

  var dpi = this.pendingDialogStack[0];
  var dialog = dpi.dialog;
  var position = dialog.compareDocumentPosition(target);
  if (position & Node.DOCUMENT_POSITION_PRECEDING) {
    if (this.forwardTab_) {
      // forward
      dpi.focus_();
    } else if (target !== document.documentElement) {
      // backwards if we're not already focused on <html>
      document.documentElement.focus();
    }
  }

  return false;
};

dialogPolyfill.DialogManager.prototype.handleKey_ = function(event) {
  this.forwardTab_ = undefined;
  if (event.keyCode === 27) {
    event.preventDefault();
    event.stopPropagation();
    var cancelEvent = new supportCustomEvent('cancel', {
      bubbles: false,
      cancelable: true
    });
    var dpi = this.pendingDialogStack[0];
    if (dpi && safeDispatchEvent(dpi.dialog, cancelEvent)) {
      dpi.dialog.close();
    }
  } else if (event.keyCode === 9) {
    this.forwardTab_ = !event.shiftKey;
  }
};

/**
 * Finds and downgrades any known modal dialogs that are no longer displayed. Dialogs that are
 * removed and immediately readded don't stay modal, they become normal.
 *
 * @param {!Array<!HTMLDialogElement>} removed that have definitely been removed
 */
dialogPolyfill.DialogManager.prototype.checkDOM_ = function(removed) {
  // This operates on a clone because it may cause it to change. Each change also calls
  // updateStacking, which only actually needs to happen once. But who removes many modal dialogs
  // at a time?!
  var clone = this.pendingDialogStack.slice();
  clone.forEach(function(dpi) {
    if (removed.indexOf(dpi.dialog) !== -1) {
      dpi.downgradeModal();
    } else {
      dpi.maybeHideModal();
    }
  });
};

/**
 * @param {!dialogPolyfillInfo} dpi
 * @return {boolean} whether the dialog was allowed
 */
dialogPolyfill.DialogManager.prototype.pushDialog = function(dpi) {
  var allowed = (this.zIndexHigh_ - this.zIndexLow_) / 2 - 1;
  if (this.pendingDialogStack.length >= allowed) {
    return false;
  }
  if (this.pendingDialogStack.unshift(dpi) === 1) {
    this.blockDocument();
  }
  this.updateStacking();
  return true;
};

/**
 * @param {!dialogPolyfillInfo} dpi
 */
dialogPolyfill.DialogManager.prototype.removeDialog = function(dpi) {
  var index = this.pendingDialogStack.indexOf(dpi);
  if (index === -1) { return; }

  this.pendingDialogStack.splice(index, 1);
  if (this.pendingDialogStack.length === 0) {
    this.unblockDocument();
  }
  this.updateStacking();
};

dialogPolyfill.dm = new dialogPolyfill.DialogManager();
dialogPolyfill.formSubmitter = null;
dialogPolyfill.imagemapUseValue = null;

/**
 * Installs global handlers, such as click listers and native method overrides. These are needed
 * even if a no dialog is registered, as they deal with <form method="dialog">.
 */
if (window.HTMLDialogElement === undefined) {

  /**
   * If HTMLFormElement translates method="DIALOG" into 'get', then replace the descriptor with
   * one that returns the correct value.
   */
  var testForm = document.createElement('form');
  testForm.setAttribute('method', 'dialog');
  if (testForm.method !== 'dialog') {
    var methodDescriptor = Object.getOwnPropertyDescriptor(HTMLFormElement.prototype, 'method');
    if (methodDescriptor) {
      // nb. Some older iOS and older PhantomJS fail to return the descriptor. Don't do anything
      // and don't bother to update the element.
      var realGet = methodDescriptor.get;
      methodDescriptor.get = function() {
        if (isFormMethodDialog(this)) {
          return 'dialog';
        }
        return realGet.call(this);
      };
      var realSet = methodDescriptor.set;
      /** @this {HTMLElement} */
      methodDescriptor.set = function(v) {
        if (typeof v === 'string' && v.toLowerCase() === 'dialog') {
          return this.setAttribute('method', v);
        }
        return realSet.call(this, v);
      };
      Object.defineProperty(HTMLFormElement.prototype, 'method', methodDescriptor);
    }
  }

  /**
   * Global 'click' handler, to capture the <input type="submit"> or <button> element which has
   * submitted a <form method="dialog">. Needed as Safari and others don't report this inside
   * document.activeElement.
   */
  document.addEventListener('click', function(ev) {
    dialogPolyfill.formSubmitter = null;
    dialogPolyfill.imagemapUseValue = null;
    if (ev.defaultPrevented) { return; }  // e.g. a submit which prevents default submission

    var target = /** @type {Element} */ (ev.target);
    if ('composedPath' in ev) {
      var path = ev.composedPath();
      target = path.shift() || target;
    }
    if (!target || !isFormMethodDialog(target.form)) { return; }

    var valid = (target.type === 'submit' && ['button', 'input'].indexOf(target.localName) > -1);
    if (!valid) {
      if (!(target.localName === 'input' && target.type === 'image')) { return; }
      // this is a <input type="image">, which can submit forms
      dialogPolyfill.imagemapUseValue = ev.offsetX + ',' + ev.offsetY;
    }

    var dialog = findNearestDialog(target);
    if (!dialog) { return; }

    dialogPolyfill.formSubmitter = target;

  }, false);

  /**
   * Global 'submit' handler. This handles submits of `method="dialog"` which are invalid, i.e.,
   * outside a dialog. They get prevented.
   */
  document.addEventListener('submit', function(ev) {
    var form = ev.target;
    var dialog = findNearestDialog(form);
    if (dialog) {
      return;  // ignore, handle there
    }

    var submitter = findFormSubmitter(ev);
    var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
    if (formmethod === 'dialog') {
      ev.preventDefault();
    }
  });

  /**
   * Replace the native HTMLFormElement.submit() method, as it won't fire the
   * submit event and give us a chance to respond.
   */
  var nativeFormSubmit = HTMLFormElement.prototype.submit;
  var replacementFormSubmit = function () {
    if (!isFormMethodDialog(this)) {
      return nativeFormSubmit.call(this);
    }
    var dialog = findNearestDialog(this);
    dialog && dialog.close();
  };
  HTMLFormElement.prototype.submit = replacementFormSubmit;
}

/* harmony default export */ __webpack_exports__["default"] = (dialogPolyfill);


/***/ }),

/***/ "../node_modules/elements-sk/define.js":
/*!*********************************************!*\
  !*** ../node_modules/elements-sk/define.js ***!
  \*********************************************/
/*! exports provided: define */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "define", function() { return define; });
// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/** @module elements-sk/define */
/**
 * Define a custom element definition. It will only define a tag name once
 * and will log an error if there's an attempt to define a tag name a second
 * time. This is useful for tests since you can't undefine a custom element.
 *
 * See also https://github.com/karma-runner/karma/issues/412
 *
 * @param tagName - The name of the tag.
 * @param cl - The class for the given tag.
 *
 * @example
 *
 * Instead of:
 *
 *     window.customElements.define('my-element', class extends HTMLElement {...});
 *
 * Use:
 *
 *     import { define } from 'elements-sk/define'
 *     define('my-element', class extends HTMLElement {...});
 *
 */
function define(tagName, cl) {
    if (window.customElements.get(tagName) === undefined) {
        window.customElements.define(tagName, cl);
    }
    else {
        console.log(`Multiple registration attempts for ${tagName}. ` +
            'This should only happen during testing, ' +
            'it\'s probably an error outside of testing.');
    }
}
//# sourceMappingURL=define.js.map

/***/ }),

/***/ "../node_modules/elements-sk/styles/buttons/buttons.scss":
/*!***************************************************************!*\
  !*** ../node_modules/elements-sk/styles/buttons/buttons.scss ***!
  \***************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),

/***/ "../node_modules/elements-sk/styles/buttons/index.js":
/*!***********************************************************!*\
  !*** ../node_modules/elements-sk/styles/buttons/index.js ***!
  \***********************************************************/
/*! no exports provided */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _buttons_scss__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./buttons.scss */ "../node_modules/elements-sk/styles/buttons/buttons.scss");
/* harmony import */ var _buttons_scss__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_buttons_scss__WEBPACK_IMPORTED_MODULE_0__);
// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/** @module elements-sk/styles/buttons
 *
 * @description CSS Styling for native buttons.
 * @example
 *
 * <button>Regular Button</button>
 * <button class=action>Action Button</button>
 * <button class=fab>Floating Action Button</button>
 */

//# sourceMappingURL=index.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/default-template-processor.js":
/*!******************************************************************!*\
  !*** ../node_modules/lit-html/lib/default-template-processor.js ***!
  \******************************************************************/
/*! exports provided: DefaultTemplateProcessor, defaultTemplateProcessor */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "DefaultTemplateProcessor", function() { return DefaultTemplateProcessor; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "defaultTemplateProcessor", function() { return defaultTemplateProcessor; });
/* harmony import */ var _parts_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./parts.js */ "../node_modules/lit-html/lib/parts.js");
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */

/**
 * Creates Parts when a template is instantiated.
 */
class DefaultTemplateProcessor {
    /**
     * Create parts for an attribute-position binding, given the event, attribute
     * name, and string literals.
     *
     * @param element The element containing the binding
     * @param name  The attribute name
     * @param strings The string literals. There are always at least two strings,
     *   event for fully-controlled bindings with a single expression.
     */
    handleAttributeExpressions(element, name, strings, options) {
        const prefix = name[0];
        if (prefix === '.') {
            const committer = new _parts_js__WEBPACK_IMPORTED_MODULE_0__["PropertyCommitter"](element, name.slice(1), strings);
            return committer.parts;
        }
        if (prefix === '@') {
            return [new _parts_js__WEBPACK_IMPORTED_MODULE_0__["EventPart"](element, name.slice(1), options.eventContext)];
        }
        if (prefix === '?') {
            return [new _parts_js__WEBPACK_IMPORTED_MODULE_0__["BooleanAttributePart"](element, name.slice(1), strings)];
        }
        const committer = new _parts_js__WEBPACK_IMPORTED_MODULE_0__["AttributeCommitter"](element, name, strings);
        return committer.parts;
    }
    /**
     * Create parts for a text-position binding.
     * @param templateFactory
     */
    handleTextExpression(options) {
        return new _parts_js__WEBPACK_IMPORTED_MODULE_0__["NodePart"](options);
    }
}
const defaultTemplateProcessor = new DefaultTemplateProcessor();
//# sourceMappingURL=default-template-processor.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/directive.js":
/*!*************************************************!*\
  !*** ../node_modules/lit-html/lib/directive.js ***!
  \*************************************************/
/*! exports provided: directive, isDirective */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "directive", function() { return directive; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isDirective", function() { return isDirective; });
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
const directives = new WeakMap();
/**
 * Brands a function as a directive factory function so that lit-html will call
 * the function during template rendering, rather than passing as a value.
 *
 * A _directive_ is a function that takes a Part as an argument. It has the
 * signature: `(part: Part) => void`.
 *
 * A directive _factory_ is a function that takes arguments for data and
 * configuration and returns a directive. Users of directive usually refer to
 * the directive factory as the directive. For example, "The repeat directive".
 *
 * Usually a template author will invoke a directive factory in their template
 * with relevant arguments, which will then return a directive function.
 *
 * Here's an example of using the `repeat()` directive factory that takes an
 * array and a function to render an item:
 *
 * ```js
 * html`<ul><${repeat(items, (item) => html`<li>${item}</li>`)}</ul>`
 * ```
 *
 * When `repeat` is invoked, it returns a directive function that closes over
 * `items` and the template function. When the outer template is rendered, the
 * return directive function is called with the Part for the expression.
 * `repeat` then performs it's custom logic to render multiple items.
 *
 * @param f The directive factory function. Must be a function that returns a
 * function of the signature `(part: Part) => void`. The returned function will
 * be called with the part object.
 *
 * @example
 *
 * import {directive, html} from 'lit-html';
 *
 * const immutable = directive((v) => (part) => {
 *   if (part.value !== v) {
 *     part.setValue(v)
 *   }
 * });
 */
const directive = (f) => ((...args) => {
    const d = f(...args);
    directives.set(d, true);
    return d;
});
const isDirective = (o) => {
    return typeof o === 'function' && directives.has(o);
};
//# sourceMappingURL=directive.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/dom.js":
/*!*******************************************!*\
  !*** ../node_modules/lit-html/lib/dom.js ***!
  \*******************************************/
/*! exports provided: isCEPolyfill, reparentNodes, removeNodes */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isCEPolyfill", function() { return isCEPolyfill; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reparentNodes", function() { return reparentNodes; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "removeNodes", function() { return removeNodes; });
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
/**
 * True if the custom elements polyfill is in use.
 */
const isCEPolyfill = typeof window !== 'undefined' &&
    window.customElements != null &&
    window.customElements.polyfillWrapFlushCallback !==
        undefined;
/**
 * Reparents nodes, starting from `start` (inclusive) to `end` (exclusive),
 * into another container (could be the same container), before `before`. If
 * `before` is null, it appends the nodes to the container.
 */
const reparentNodes = (container, start, end = null, before = null) => {
    while (start !== end) {
        const n = start.nextSibling;
        container.insertBefore(start, before);
        start = n;
    }
};
/**
 * Removes nodes, starting from `start` (inclusive) to `end` (exclusive), from
 * `container`.
 */
const removeNodes = (container, start, end = null) => {
    while (start !== end) {
        const n = start.nextSibling;
        container.removeChild(start);
        start = n;
    }
};
//# sourceMappingURL=dom.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/part.js":
/*!********************************************!*\
  !*** ../node_modules/lit-html/lib/part.js ***!
  \********************************************/
/*! exports provided: noChange, nothing */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "noChange", function() { return noChange; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "nothing", function() { return nothing; });
/**
 * @license
 * Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
/**
 * A sentinel value that signals that a value was handled by a directive and
 * should not be written to the DOM.
 */
const noChange = {};
/**
 * A sentinel value that signals a NodePart to fully clear its content.
 */
const nothing = {};
//# sourceMappingURL=part.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/parts.js":
/*!*********************************************!*\
  !*** ../node_modules/lit-html/lib/parts.js ***!
  \*********************************************/
/*! exports provided: isPrimitive, isIterable, AttributeCommitter, AttributePart, NodePart, BooleanAttributePart, PropertyCommitter, PropertyPart, EventPart */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isPrimitive", function() { return isPrimitive; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isIterable", function() { return isIterable; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AttributeCommitter", function() { return AttributeCommitter; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AttributePart", function() { return AttributePart; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "NodePart", function() { return NodePart; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "BooleanAttributePart", function() { return BooleanAttributePart; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "PropertyCommitter", function() { return PropertyCommitter; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "PropertyPart", function() { return PropertyPart; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "EventPart", function() { return EventPart; });
/* harmony import */ var _directive_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./directive.js */ "../node_modules/lit-html/lib/directive.js");
/* harmony import */ var _dom_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./dom.js */ "../node_modules/lit-html/lib/dom.js");
/* harmony import */ var _part_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./part.js */ "../node_modules/lit-html/lib/part.js");
/* harmony import */ var _template_instance_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./template-instance.js */ "../node_modules/lit-html/lib/template-instance.js");
/* harmony import */ var _template_result_js__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./template-result.js */ "../node_modules/lit-html/lib/template-result.js");
/* harmony import */ var _template_js__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ./template.js */ "../node_modules/lit-html/lib/template.js");
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */






const isPrimitive = (value) => {
    return (value === null ||
        !(typeof value === 'object' || typeof value === 'function'));
};
const isIterable = (value) => {
    return Array.isArray(value) ||
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        !!(value && value[Symbol.iterator]);
};
/**
 * Writes attribute values to the DOM for a group of AttributeParts bound to a
 * single attribute. The value is only set once even if there are multiple parts
 * for an attribute.
 */
class AttributeCommitter {
    constructor(element, name, strings) {
        this.dirty = true;
        this.element = element;
        this.name = name;
        this.strings = strings;
        this.parts = [];
        for (let i = 0; i < strings.length - 1; i++) {
            this.parts[i] = this._createPart();
        }
    }
    /**
     * Creates a single part. Override this to create a differnt type of part.
     */
    _createPart() {
        return new AttributePart(this);
    }
    _getValue() {
        const strings = this.strings;
        const l = strings.length - 1;
        const parts = this.parts;
        // If we're assigning an attribute via syntax like:
        //    attr="${foo}"  or  attr=${foo}
        // but not
        //    attr="${foo} ${bar}" or attr="${foo} baz"
        // then we don't want to coerce the attribute value into one long
        // string. Instead we want to just return the value itself directly,
        // so that sanitizeDOMValue can get the actual value rather than
        // String(value)
        // The exception is if v is an array, in which case we do want to smash
        // it together into a string without calling String() on the array.
        //
        // This also allows trusted values (when using TrustedTypes) being
        // assigned to DOM sinks without being stringified in the process.
        if (l === 1 && strings[0] === '' && strings[1] === '') {
            const v = parts[0].value;
            if (typeof v === 'symbol') {
                return String(v);
            }
            if (typeof v === 'string' || !isIterable(v)) {
                return v;
            }
        }
        let text = '';
        for (let i = 0; i < l; i++) {
            text += strings[i];
            const part = parts[i];
            if (part !== undefined) {
                const v = part.value;
                if (isPrimitive(v) || !isIterable(v)) {
                    text += typeof v === 'string' ? v : String(v);
                }
                else {
                    for (const t of v) {
                        text += typeof t === 'string' ? t : String(t);
                    }
                }
            }
        }
        text += strings[l];
        return text;
    }
    commit() {
        if (this.dirty) {
            this.dirty = false;
            this.element.setAttribute(this.name, this._getValue());
        }
    }
}
/**
 * A Part that controls all or part of an attribute value.
 */
class AttributePart {
    constructor(committer) {
        this.value = undefined;
        this.committer = committer;
    }
    setValue(value) {
        if (value !== _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"] && (!isPrimitive(value) || value !== this.value)) {
            this.value = value;
            // If the value is a not a directive, dirty the committer so that it'll
            // call setAttribute. If the value is a directive, it'll dirty the
            // committer if it calls setValue().
            if (!Object(_directive_js__WEBPACK_IMPORTED_MODULE_0__["isDirective"])(value)) {
                this.committer.dirty = true;
            }
        }
    }
    commit() {
        while (Object(_directive_js__WEBPACK_IMPORTED_MODULE_0__["isDirective"])(this.value)) {
            const directive = this.value;
            this.value = _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"];
            directive(this);
        }
        if (this.value === _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"]) {
            return;
        }
        this.committer.commit();
    }
}
/**
 * A Part that controls a location within a Node tree. Like a Range, NodePart
 * has start and end locations and can set and update the Nodes between those
 * locations.
 *
 * NodeParts support several value types: primitives, Nodes, TemplateResults,
 * as well as arrays and iterables of those types.
 */
class NodePart {
    constructor(options) {
        this.value = undefined;
        this.__pendingValue = undefined;
        this.options = options;
    }
    /**
     * Appends this part into a container.
     *
     * This part must be empty, as its contents are not automatically moved.
     */
    appendInto(container) {
        this.startNode = container.appendChild(Object(_template_js__WEBPACK_IMPORTED_MODULE_5__["createMarker"])());
        this.endNode = container.appendChild(Object(_template_js__WEBPACK_IMPORTED_MODULE_5__["createMarker"])());
    }
    /**
     * Inserts this part after the `ref` node (between `ref` and `ref`'s next
     * sibling). Both `ref` and its next sibling must be static, unchanging nodes
     * such as those that appear in a literal section of a template.
     *
     * This part must be empty, as its contents are not automatically moved.
     */
    insertAfterNode(ref) {
        this.startNode = ref;
        this.endNode = ref.nextSibling;
    }
    /**
     * Appends this part into a parent part.
     *
     * This part must be empty, as its contents are not automatically moved.
     */
    appendIntoPart(part) {
        part.__insert(this.startNode = Object(_template_js__WEBPACK_IMPORTED_MODULE_5__["createMarker"])());
        part.__insert(this.endNode = Object(_template_js__WEBPACK_IMPORTED_MODULE_5__["createMarker"])());
    }
    /**
     * Inserts this part after the `ref` part.
     *
     * This part must be empty, as its contents are not automatically moved.
     */
    insertAfterPart(ref) {
        ref.__insert(this.startNode = Object(_template_js__WEBPACK_IMPORTED_MODULE_5__["createMarker"])());
        this.endNode = ref.endNode;
        ref.endNode = this.startNode;
    }
    setValue(value) {
        this.__pendingValue = value;
    }
    commit() {
        if (this.startNode.parentNode === null) {
            return;
        }
        while (Object(_directive_js__WEBPACK_IMPORTED_MODULE_0__["isDirective"])(this.__pendingValue)) {
            const directive = this.__pendingValue;
            this.__pendingValue = _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"];
            directive(this);
        }
        const value = this.__pendingValue;
        if (value === _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"]) {
            return;
        }
        if (isPrimitive(value)) {
            if (value !== this.value) {
                this.__commitText(value);
            }
        }
        else if (value instanceof _template_result_js__WEBPACK_IMPORTED_MODULE_4__["TemplateResult"]) {
            this.__commitTemplateResult(value);
        }
        else if (value instanceof Node) {
            this.__commitNode(value);
        }
        else if (isIterable(value)) {
            this.__commitIterable(value);
        }
        else if (value === _part_js__WEBPACK_IMPORTED_MODULE_2__["nothing"]) {
            this.value = _part_js__WEBPACK_IMPORTED_MODULE_2__["nothing"];
            this.clear();
        }
        else {
            // Fallback, will render the string representation
            this.__commitText(value);
        }
    }
    __insert(node) {
        this.endNode.parentNode.insertBefore(node, this.endNode);
    }
    __commitNode(value) {
        if (this.value === value) {
            return;
        }
        this.clear();
        this.__insert(value);
        this.value = value;
    }
    __commitText(value) {
        const node = this.startNode.nextSibling;
        value = value == null ? '' : value;
        // If `value` isn't already a string, we explicitly convert it here in case
        // it can't be implicitly converted - i.e. it's a symbol.
        const valueAsString = typeof value === 'string' ? value : String(value);
        if (node === this.endNode.previousSibling &&
            node.nodeType === 3 /* Node.TEXT_NODE */) {
            // If we only have a single text node between the markers, we can just
            // set its value, rather than replacing it.
            // TODO(justinfagnani): Can we just check if this.value is primitive?
            node.data = valueAsString;
        }
        else {
            this.__commitNode(document.createTextNode(valueAsString));
        }
        this.value = value;
    }
    __commitTemplateResult(value) {
        const template = this.options.templateFactory(value);
        if (this.value instanceof _template_instance_js__WEBPACK_IMPORTED_MODULE_3__["TemplateInstance"] &&
            this.value.template === template) {
            this.value.update(value.values);
        }
        else {
            // Make sure we propagate the template processor from the TemplateResult
            // so that we use its syntax extension, etc. The template factory comes
            // from the render function options so that it can control template
            // caching and preprocessing.
            const instance = new _template_instance_js__WEBPACK_IMPORTED_MODULE_3__["TemplateInstance"](template, value.processor, this.options);
            const fragment = instance._clone();
            instance.update(value.values);
            this.__commitNode(fragment);
            this.value = instance;
        }
    }
    __commitIterable(value) {
        // For an Iterable, we create a new InstancePart per item, then set its
        // value to the item. This is a little bit of overhead for every item in
        // an Iterable, but it lets us recurse easily and efficiently update Arrays
        // of TemplateResults that will be commonly returned from expressions like:
        // array.map((i) => html`${i}`), by reusing existing TemplateInstances.
        // If _value is an array, then the previous render was of an
        // iterable and _value will contain the NodeParts from the previous
        // render. If _value is not an array, clear this part and make a new
        // array for NodeParts.
        if (!Array.isArray(this.value)) {
            this.value = [];
            this.clear();
        }
        // Lets us keep track of how many items we stamped so we can clear leftover
        // items from a previous render
        const itemParts = this.value;
        let partIndex = 0;
        let itemPart;
        for (const item of value) {
            // Try to reuse an existing part
            itemPart = itemParts[partIndex];
            // If no existing part, create a new one
            if (itemPart === undefined) {
                itemPart = new NodePart(this.options);
                itemParts.push(itemPart);
                if (partIndex === 0) {
                    itemPart.appendIntoPart(this);
                }
                else {
                    itemPart.insertAfterPart(itemParts[partIndex - 1]);
                }
            }
            itemPart.setValue(item);
            itemPart.commit();
            partIndex++;
        }
        if (partIndex < itemParts.length) {
            // Truncate the parts array so _value reflects the current state
            itemParts.length = partIndex;
            this.clear(itemPart && itemPart.endNode);
        }
    }
    clear(startNode = this.startNode) {
        Object(_dom_js__WEBPACK_IMPORTED_MODULE_1__["removeNodes"])(this.startNode.parentNode, startNode.nextSibling, this.endNode);
    }
}
/**
 * Implements a boolean attribute, roughly as defined in the HTML
 * specification.
 *
 * If the value is truthy, then the attribute is present with a value of
 * ''. If the value is falsey, the attribute is removed.
 */
class BooleanAttributePart {
    constructor(element, name, strings) {
        this.value = undefined;
        this.__pendingValue = undefined;
        if (strings.length !== 2 || strings[0] !== '' || strings[1] !== '') {
            throw new Error('Boolean attributes can only contain a single expression');
        }
        this.element = element;
        this.name = name;
        this.strings = strings;
    }
    setValue(value) {
        this.__pendingValue = value;
    }
    commit() {
        while (Object(_directive_js__WEBPACK_IMPORTED_MODULE_0__["isDirective"])(this.__pendingValue)) {
            const directive = this.__pendingValue;
            this.__pendingValue = _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"];
            directive(this);
        }
        if (this.__pendingValue === _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"]) {
            return;
        }
        const value = !!this.__pendingValue;
        if (this.value !== value) {
            if (value) {
                this.element.setAttribute(this.name, '');
            }
            else {
                this.element.removeAttribute(this.name);
            }
            this.value = value;
        }
        this.__pendingValue = _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"];
    }
}
/**
 * Sets attribute values for PropertyParts, so that the value is only set once
 * even if there are multiple parts for a property.
 *
 * If an expression controls the whole property value, then the value is simply
 * assigned to the property under control. If there are string literals or
 * multiple expressions, then the strings are expressions are interpolated into
 * a string first.
 */
class PropertyCommitter extends AttributeCommitter {
    constructor(element, name, strings) {
        super(element, name, strings);
        this.single =
            (strings.length === 2 && strings[0] === '' && strings[1] === '');
    }
    _createPart() {
        return new PropertyPart(this);
    }
    _getValue() {
        if (this.single) {
            return this.parts[0].value;
        }
        return super._getValue();
    }
    commit() {
        if (this.dirty) {
            this.dirty = false;
            // eslint-disable-next-line @typescript-eslint/no-explicit-any
            this.element[this.name] = this._getValue();
        }
    }
}
class PropertyPart extends AttributePart {
}
// Detect event listener options support. If the `capture` property is read
// from the options object, then options are supported. If not, then the third
// argument to add/removeEventListener is interpreted as the boolean capture
// value so we should only pass the `capture` property.
let eventOptionsSupported = false;
// Wrap into an IIFE because MS Edge <= v41 does not support having try/catch
// blocks right into the body of a module
(() => {
    try {
        const options = {
            get capture() {
                eventOptionsSupported = true;
                return false;
            }
        };
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        window.addEventListener('test', options, options);
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        window.removeEventListener('test', options, options);
    }
    catch (_e) {
        // event options not supported
    }
})();
class EventPart {
    constructor(element, eventName, eventContext) {
        this.value = undefined;
        this.__pendingValue = undefined;
        this.element = element;
        this.eventName = eventName;
        this.eventContext = eventContext;
        this.__boundHandleEvent = (e) => this.handleEvent(e);
    }
    setValue(value) {
        this.__pendingValue = value;
    }
    commit() {
        while (Object(_directive_js__WEBPACK_IMPORTED_MODULE_0__["isDirective"])(this.__pendingValue)) {
            const directive = this.__pendingValue;
            this.__pendingValue = _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"];
            directive(this);
        }
        if (this.__pendingValue === _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"]) {
            return;
        }
        const newListener = this.__pendingValue;
        const oldListener = this.value;
        const shouldRemoveListener = newListener == null ||
            oldListener != null &&
                (newListener.capture !== oldListener.capture ||
                    newListener.once !== oldListener.once ||
                    newListener.passive !== oldListener.passive);
        const shouldAddListener = newListener != null && (oldListener == null || shouldRemoveListener);
        if (shouldRemoveListener) {
            this.element.removeEventListener(this.eventName, this.__boundHandleEvent, this.__options);
        }
        if (shouldAddListener) {
            this.__options = getOptions(newListener);
            this.element.addEventListener(this.eventName, this.__boundHandleEvent, this.__options);
        }
        this.value = newListener;
        this.__pendingValue = _part_js__WEBPACK_IMPORTED_MODULE_2__["noChange"];
    }
    handleEvent(event) {
        if (typeof this.value === 'function') {
            this.value.call(this.eventContext || this.element, event);
        }
        else {
            this.value.handleEvent(event);
        }
    }
}
// We copy options because of the inconsistent behavior of browsers when reading
// the third argument of add/removeEventListener. IE11 doesn't support options
// at all. Chrome 41 only reads `capture` if the argument is an object.
const getOptions = (o) => o &&
    (eventOptionsSupported ?
        { capture: o.capture, passive: o.passive, once: o.once } :
        o.capture);
//# sourceMappingURL=parts.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/render.js":
/*!**********************************************!*\
  !*** ../node_modules/lit-html/lib/render.js ***!
  \**********************************************/
/*! exports provided: parts, render */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "parts", function() { return parts; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "render", function() { return render; });
/* harmony import */ var _dom_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./dom.js */ "../node_modules/lit-html/lib/dom.js");
/* harmony import */ var _parts_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./parts.js */ "../node_modules/lit-html/lib/parts.js");
/* harmony import */ var _template_factory_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./template-factory.js */ "../node_modules/lit-html/lib/template-factory.js");
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */



const parts = new WeakMap();
/**
 * Renders a template result or other value to a container.
 *
 * To update a container with new values, reevaluate the template literal and
 * call `render` with the new result.
 *
 * @param result Any value renderable by NodePart - typically a TemplateResult
 *     created by evaluating a template tag like `html` or `svg`.
 * @param container A DOM parent to render to. The entire contents are either
 *     replaced, or efficiently updated if the same result type was previous
 *     rendered there.
 * @param options RenderOptions for the entire render tree rendered to this
 *     container. Render options must *not* change between renders to the same
 *     container, as those changes will not effect previously rendered DOM.
 */
const render = (result, container, options) => {
    let part = parts.get(container);
    if (part === undefined) {
        Object(_dom_js__WEBPACK_IMPORTED_MODULE_0__["removeNodes"])(container, container.firstChild);
        parts.set(container, part = new _parts_js__WEBPACK_IMPORTED_MODULE_1__["NodePart"](Object.assign({ templateFactory: _template_factory_js__WEBPACK_IMPORTED_MODULE_2__["templateFactory"] }, options)));
        part.appendInto(container);
    }
    part.setValue(result);
    part.commit();
};
//# sourceMappingURL=render.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/template-factory.js":
/*!********************************************************!*\
  !*** ../node_modules/lit-html/lib/template-factory.js ***!
  \********************************************************/
/*! exports provided: templateFactory, templateCaches */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "templateFactory", function() { return templateFactory; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "templateCaches", function() { return templateCaches; });
/* harmony import */ var _template_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./template.js */ "../node_modules/lit-html/lib/template.js");
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */

/**
 * The default TemplateFactory which caches Templates keyed on
 * result.type and result.strings.
 */
function templateFactory(result) {
    let templateCache = templateCaches.get(result.type);
    if (templateCache === undefined) {
        templateCache = {
            stringsArray: new WeakMap(),
            keyString: new Map()
        };
        templateCaches.set(result.type, templateCache);
    }
    let template = templateCache.stringsArray.get(result.strings);
    if (template !== undefined) {
        return template;
    }
    // If the TemplateStringsArray is new, generate a key from the strings
    // This key is shared between all templates with identical content
    const key = result.strings.join(_template_js__WEBPACK_IMPORTED_MODULE_0__["marker"]);
    // Check if we already have a Template for this key
    template = templateCache.keyString.get(key);
    if (template === undefined) {
        // If we have not seen this key before, create a new Template
        template = new _template_js__WEBPACK_IMPORTED_MODULE_0__["Template"](result, result.getTemplateElement());
        // Cache the Template for this key
        templateCache.keyString.set(key, template);
    }
    // Cache all future queries for this TemplateStringsArray
    templateCache.stringsArray.set(result.strings, template);
    return template;
}
const templateCaches = new Map();
//# sourceMappingURL=template-factory.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/template-instance.js":
/*!*********************************************************!*\
  !*** ../node_modules/lit-html/lib/template-instance.js ***!
  \*********************************************************/
/*! exports provided: TemplateInstance */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "TemplateInstance", function() { return TemplateInstance; });
/* harmony import */ var _dom_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./dom.js */ "../node_modules/lit-html/lib/dom.js");
/* harmony import */ var _template_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./template.js */ "../node_modules/lit-html/lib/template.js");
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */


/**
 * An instance of a `Template` that can be attached to the DOM and updated
 * with new values.
 */
class TemplateInstance {
    constructor(template, processor, options) {
        this.__parts = [];
        this.template = template;
        this.processor = processor;
        this.options = options;
    }
    update(values) {
        let i = 0;
        for (const part of this.__parts) {
            if (part !== undefined) {
                part.setValue(values[i]);
            }
            i++;
        }
        for (const part of this.__parts) {
            if (part !== undefined) {
                part.commit();
            }
        }
    }
    _clone() {
        // There are a number of steps in the lifecycle of a template instance's
        // DOM fragment:
        //  1. Clone - create the instance fragment
        //  2. Adopt - adopt into the main document
        //  3. Process - find part markers and create parts
        //  4. Upgrade - upgrade custom elements
        //  5. Update - set node, attribute, property, etc., values
        //  6. Connect - connect to the document. Optional and outside of this
        //     method.
        //
        // We have a few constraints on the ordering of these steps:
        //  * We need to upgrade before updating, so that property values will pass
        //    through any property setters.
        //  * We would like to process before upgrading so that we're sure that the
        //    cloned fragment is inert and not disturbed by self-modifying DOM.
        //  * We want custom elements to upgrade even in disconnected fragments.
        //
        // Given these constraints, with full custom elements support we would
        // prefer the order: Clone, Process, Adopt, Upgrade, Update, Connect
        //
        // But Safari does not implement CustomElementRegistry#upgrade, so we
        // can not implement that order and still have upgrade-before-update and
        // upgrade disconnected fragments. So we instead sacrifice the
        // process-before-upgrade constraint, since in Custom Elements v1 elements
        // must not modify their light DOM in the constructor. We still have issues
        // when co-existing with CEv0 elements like Polymer 1, and with polyfills
        // that don't strictly adhere to the no-modification rule because shadow
        // DOM, which may be created in the constructor, is emulated by being placed
        // in the light DOM.
        //
        // The resulting order is on native is: Clone, Adopt, Upgrade, Process,
        // Update, Connect. document.importNode() performs Clone, Adopt, and Upgrade
        // in one step.
        //
        // The Custom Elements v1 polyfill supports upgrade(), so the order when
        // polyfilled is the more ideal: Clone, Process, Adopt, Upgrade, Update,
        // Connect.
        const fragment = _dom_js__WEBPACK_IMPORTED_MODULE_0__["isCEPolyfill"] ?
            this.template.element.content.cloneNode(true) :
            document.importNode(this.template.element.content, true);
        const stack = [];
        const parts = this.template.parts;
        // Edge needs all 4 parameters present; IE11 needs 3rd parameter to be null
        const walker = document.createTreeWalker(fragment, 133 /* NodeFilter.SHOW_{ELEMENT|COMMENT|TEXT} */, null, false);
        let partIndex = 0;
        let nodeIndex = 0;
        let part;
        let node = walker.nextNode();
        // Loop through all the nodes and parts of a template
        while (partIndex < parts.length) {
            part = parts[partIndex];
            if (!Object(_template_js__WEBPACK_IMPORTED_MODULE_1__["isTemplatePartActive"])(part)) {
                this.__parts.push(undefined);
                partIndex++;
                continue;
            }
            // Progress the tree walker until we find our next part's node.
            // Note that multiple parts may share the same node (attribute parts
            // on a single element), so this loop may not run at all.
            while (nodeIndex < part.index) {
                nodeIndex++;
                if (node.nodeName === 'TEMPLATE') {
                    stack.push(node);
                    walker.currentNode = node.content;
                }
                if ((node = walker.nextNode()) === null) {
                    // We've exhausted the content inside a nested template element.
                    // Because we still have parts (the outer for-loop), we know:
                    // - There is a template in the stack
                    // - The walker will find a nextNode outside the template
                    walker.currentNode = stack.pop();
                    node = walker.nextNode();
                }
            }
            // We've arrived at our part's node.
            if (part.type === 'node') {
                const part = this.processor.handleTextExpression(this.options);
                part.insertAfterNode(node.previousSibling);
                this.__parts.push(part);
            }
            else {
                this.__parts.push(...this.processor.handleAttributeExpressions(node, part.name, part.strings, this.options));
            }
            partIndex++;
        }
        if (_dom_js__WEBPACK_IMPORTED_MODULE_0__["isCEPolyfill"]) {
            document.adoptNode(fragment);
            customElements.upgrade(fragment);
        }
        return fragment;
    }
}
//# sourceMappingURL=template-instance.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/template-result.js":
/*!*******************************************************!*\
  !*** ../node_modules/lit-html/lib/template-result.js ***!
  \*******************************************************/
/*! exports provided: TemplateResult, SVGTemplateResult */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "TemplateResult", function() { return TemplateResult; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "SVGTemplateResult", function() { return SVGTemplateResult; });
/* harmony import */ var _dom_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./dom.js */ "../node_modules/lit-html/lib/dom.js");
/* harmony import */ var _template_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./template.js */ "../node_modules/lit-html/lib/template.js");
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
/**
 * @module lit-html
 */


/**
 * Our TrustedTypePolicy for HTML which is declared using the html template
 * tag function.
 *
 * That HTML is a developer-authored constant, and is parsed with innerHTML
 * before any untrusted expressions have been mixed in. Therefor it is
 * considered safe by construction.
 */
const policy = window.trustedTypes &&
    trustedTypes.createPolicy('lit-html', { createHTML: (s) => s });
const commentMarker = ` ${_template_js__WEBPACK_IMPORTED_MODULE_1__["marker"]} `;
/**
 * The return type of `html`, which holds a Template and the values from
 * interpolated expressions.
 */
class TemplateResult {
    constructor(strings, values, type, processor) {
        this.strings = strings;
        this.values = values;
        this.type = type;
        this.processor = processor;
    }
    /**
     * Returns a string of HTML used to create a `<template>` element.
     */
    getHTML() {
        const l = this.strings.length - 1;
        let html = '';
        let isCommentBinding = false;
        for (let i = 0; i < l; i++) {
            const s = this.strings[i];
            // For each binding we want to determine the kind of marker to insert
            // into the template source before it's parsed by the browser's HTML
            // parser. The marker type is based on whether the expression is in an
            // attribute, text, or comment position.
            //   * For node-position bindings we insert a comment with the marker
            //     sentinel as its text content, like <!--{{lit-guid}}-->.
            //   * For attribute bindings we insert just the marker sentinel for the
            //     first binding, so that we support unquoted attribute bindings.
            //     Subsequent bindings can use a comment marker because multi-binding
            //     attributes must be quoted.
            //   * For comment bindings we insert just the marker sentinel so we don't
            //     close the comment.
            //
            // The following code scans the template source, but is *not* an HTML
            // parser. We don't need to track the tree structure of the HTML, only
            // whether a binding is inside a comment, and if not, if it appears to be
            // the first binding in an attribute.
            const commentOpen = s.lastIndexOf('<!--');
            // We're in comment position if we have a comment open with no following
            // comment close. Because <-- can appear in an attribute value there can
            // be false positives.
            isCommentBinding = (commentOpen > -1 || isCommentBinding) &&
                s.indexOf('-->', commentOpen + 1) === -1;
            // Check to see if we have an attribute-like sequence preceding the
            // expression. This can match "name=value" like structures in text,
            // comments, and attribute values, so there can be false-positives.
            const attributeMatch = _template_js__WEBPACK_IMPORTED_MODULE_1__["lastAttributeNameRegex"].exec(s);
            if (attributeMatch === null) {
                // We're only in this branch if we don't have a attribute-like
                // preceding sequence. For comments, this guards against unusual
                // attribute values like <div foo="<!--${'bar'}">. Cases like
                // <!-- foo=${'bar'}--> are handled correctly in the attribute branch
                // below.
                html += s + (isCommentBinding ? commentMarker : _template_js__WEBPACK_IMPORTED_MODULE_1__["nodeMarker"]);
            }
            else {
                // For attributes we use just a marker sentinel, and also append a
                // $lit$ suffix to the name to opt-out of attribute-specific parsing
                // that IE and Edge do for style and certain SVG attributes.
                html += s.substr(0, attributeMatch.index) + attributeMatch[1] +
                    attributeMatch[2] + _template_js__WEBPACK_IMPORTED_MODULE_1__["boundAttributeSuffix"] + attributeMatch[3] +
                    _template_js__WEBPACK_IMPORTED_MODULE_1__["marker"];
            }
        }
        html += this.strings[l];
        return html;
    }
    getTemplateElement() {
        const template = document.createElement('template');
        let value = this.getHTML();
        if (policy !== undefined) {
            // this is secure because `this.strings` is a TemplateStringsArray.
            // TODO: validate this when
            // https://github.com/tc39/proposal-array-is-template-object is
            // implemented.
            value = policy.createHTML(value);
        }
        template.innerHTML = value;
        return template;
    }
}
/**
 * A TemplateResult for SVG fragments.
 *
 * This class wraps HTML in an `<svg>` tag in order to parse its contents in the
 * SVG namespace, then modifies the template to remove the `<svg>` tag so that
 * clones only container the original fragment.
 */
class SVGTemplateResult extends TemplateResult {
    getHTML() {
        return `<svg>${super.getHTML()}</svg>`;
    }
    getTemplateElement() {
        const template = super.getTemplateElement();
        const content = template.content;
        const svgElement = content.firstChild;
        content.removeChild(svgElement);
        Object(_dom_js__WEBPACK_IMPORTED_MODULE_0__["reparentNodes"])(content, svgElement.firstChild);
        return template;
    }
}
//# sourceMappingURL=template-result.js.map

/***/ }),

/***/ "../node_modules/lit-html/lib/template.js":
/*!************************************************!*\
  !*** ../node_modules/lit-html/lib/template.js ***!
  \************************************************/
/*! exports provided: marker, nodeMarker, markerRegex, boundAttributeSuffix, Template, isTemplatePartActive, createMarker, lastAttributeNameRegex */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "marker", function() { return marker; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "nodeMarker", function() { return nodeMarker; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "markerRegex", function() { return markerRegex; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "boundAttributeSuffix", function() { return boundAttributeSuffix; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Template", function() { return Template; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isTemplatePartActive", function() { return isTemplatePartActive; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createMarker", function() { return createMarker; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "lastAttributeNameRegex", function() { return lastAttributeNameRegex; });
/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
/**
 * An expression marker with embedded unique key to avoid collision with
 * possible text in templates.
 */
const marker = `{{lit-${String(Math.random()).slice(2)}}}`;
/**
 * An expression marker used text-positions, multi-binding attributes, and
 * attributes with markup-like text values.
 */
const nodeMarker = `<!--${marker}-->`;
const markerRegex = new RegExp(`${marker}|${nodeMarker}`);
/**
 * Suffix appended to all bound attribute names.
 */
const boundAttributeSuffix = '$lit$';
/**
 * An updatable Template that tracks the location of dynamic parts.
 */
class Template {
    constructor(result, element) {
        this.parts = [];
        this.element = element;
        const nodesToRemove = [];
        const stack = [];
        // Edge needs all 4 parameters present; IE11 needs 3rd parameter to be null
        const walker = document.createTreeWalker(element.content, 133 /* NodeFilter.SHOW_{ELEMENT|COMMENT|TEXT} */, null, false);
        // Keeps track of the last index associated with a part. We try to delete
        // unnecessary nodes, but we never want to associate two different parts
        // to the same index. They must have a constant node between.
        let lastPartIndex = 0;
        let index = -1;
        let partIndex = 0;
        const { strings, values: { length } } = result;
        while (partIndex < length) {
            const node = walker.nextNode();
            if (node === null) {
                // We've exhausted the content inside a nested template element.
                // Because we still have parts (the outer for-loop), we know:
                // - There is a template in the stack
                // - The walker will find a nextNode outside the template
                walker.currentNode = stack.pop();
                continue;
            }
            index++;
            if (node.nodeType === 1 /* Node.ELEMENT_NODE */) {
                if (node.hasAttributes()) {
                    const attributes = node.attributes;
                    const { length } = attributes;
                    // Per
                    // https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap,
                    // attributes are not guaranteed to be returned in document order.
                    // In particular, Edge/IE can return them out of order, so we cannot
                    // assume a correspondence between part index and attribute index.
                    let count = 0;
                    for (let i = 0; i < length; i++) {
                        if (endsWith(attributes[i].name, boundAttributeSuffix)) {
                            count++;
                        }
                    }
                    while (count-- > 0) {
                        // Get the template literal section leading up to the first
                        // expression in this attribute
                        const stringForPart = strings[partIndex];
                        // Find the attribute name
                        const name = lastAttributeNameRegex.exec(stringForPart)[2];
                        // Find the corresponding attribute
                        // All bound attributes have had a suffix added in
                        // TemplateResult#getHTML to opt out of special attribute
                        // handling. To look up the attribute value we also need to add
                        // the suffix.
                        const attributeLookupName = name.toLowerCase() + boundAttributeSuffix;
                        const attributeValue = node.getAttribute(attributeLookupName);
                        node.removeAttribute(attributeLookupName);
                        const statics = attributeValue.split(markerRegex);
                        this.parts.push({ type: 'attribute', index, name, strings: statics });
                        partIndex += statics.length - 1;
                    }
                }
                if (node.tagName === 'TEMPLATE') {
                    stack.push(node);
                    walker.currentNode = node.content;
                }
            }
            else if (node.nodeType === 3 /* Node.TEXT_NODE */) {
                const data = node.data;
                if (data.indexOf(marker) >= 0) {
                    const parent = node.parentNode;
                    const strings = data.split(markerRegex);
                    const lastIndex = strings.length - 1;
                    // Generate a new text node for each literal section
                    // These nodes are also used as the markers for node parts
                    for (let i = 0; i < lastIndex; i++) {
                        let insert;
                        let s = strings[i];
                        if (s === '') {
                            insert = createMarker();
                        }
                        else {
                            const match = lastAttributeNameRegex.exec(s);
                            if (match !== null && endsWith(match[2], boundAttributeSuffix)) {
                                s = s.slice(0, match.index) + match[1] +
                                    match[2].slice(0, -boundAttributeSuffix.length) + match[3];
                            }
                            insert = document.createTextNode(s);
                        }
                        parent.insertBefore(insert, node);
                        this.parts.push({ type: 'node', index: ++index });
                    }
                    // If there's no text, we must insert a comment to mark our place.
                    // Else, we can trust it will stick around after cloning.
                    if (strings[lastIndex] === '') {
                        parent.insertBefore(createMarker(), node);
                        nodesToRemove.push(node);
                    }
                    else {
                        node.data = strings[lastIndex];
                    }
                    // We have a part for each match found
                    partIndex += lastIndex;
                }
            }
            else if (node.nodeType === 8 /* Node.COMMENT_NODE */) {
                if (node.data === marker) {
                    const parent = node.parentNode;
                    // Add a new marker node to be the startNode of the Part if any of
                    // the following are true:
                    //  * We don't have a previousSibling
                    //  * The previousSibling is already the start of a previous part
                    if (node.previousSibling === null || index === lastPartIndex) {
                        index++;
                        parent.insertBefore(createMarker(), node);
                    }
                    lastPartIndex = index;
                    this.parts.push({ type: 'node', index });
                    // If we don't have a nextSibling, keep this node so we have an end.
                    // Else, we can remove it to save future costs.
                    if (node.nextSibling === null) {
                        node.data = '';
                    }
                    else {
                        nodesToRemove.push(node);
                        index--;
                    }
                    partIndex++;
                }
                else {
                    let i = -1;
                    while ((i = node.data.indexOf(marker, i + 1)) !== -1) {
                        // Comment node has a binding marker inside, make an inactive part
                        // The binding won't work, but subsequent bindings will
                        // TODO (justinfagnani): consider whether it's even worth it to
                        // make bindings in comments work
                        this.parts.push({ type: 'node', index: -1 });
                        partIndex++;
                    }
                }
            }
        }
        // Remove text binding nodes after the walk to not disturb the TreeWalker
        for (const n of nodesToRemove) {
            n.parentNode.removeChild(n);
        }
    }
}
const endsWith = (str, suffix) => {
    const index = str.length - suffix.length;
    return index >= 0 && str.slice(index) === suffix;
};
const isTemplatePartActive = (part) => part.index !== -1;
// Allows `document.createComment('')` to be renamed for a
// small manual size-savings.
const createMarker = () => document.createComment('');
/**
 * This regex extracts the attribute name preceding an attribute-position
 * expression. It does this by matching the syntax allowed for attributes
 * against the string literal directly preceding the expression, assuming that
 * the expression is in an attribute-value position.
 *
 * See attributes in the HTML spec:
 * https://www.w3.org/TR/html5/syntax.html#elements-attributes
 *
 * " \x09\x0a\x0c\x0d" are HTML space characters:
 * https://www.w3.org/TR/html5/infrastructure.html#space-characters
 *
 * "\0-\x1F\x7F-\x9F" are Unicode control characters, which includes every
 * space character except " ".
 *
 * So an attribute is:
 *  * The name: any character except a control character, space character, ('),
 *    ("), ">", "=", or "/"
 *  * Followed by zero or more space characters
 *  * Followed by "="
 *  * Followed by zero or more space characters
 *  * Followed by:
 *    * Any character except space, ('), ("), "<", ">", "=", (`), or
 *    * (") then any non-("), or
 *    * (') then any non-(')
 */
const lastAttributeNameRegex = 
// eslint-disable-next-line no-control-regex
/([ \x09\x0a\x0c\x0d])([^\0-\x1F\x7F-\x9F "'>=/]+)([ \x09\x0a\x0c\x0d]*=[ \x09\x0a\x0c\x0d]*(?:[^ \x09\x0a\x0c\x0d"'`<>=]*|"[^"]*|'[^']*))$/;
//# sourceMappingURL=template.js.map

/***/ }),

/***/ "../node_modules/lit-html/lit-html.js":
/*!********************************************!*\
  !*** ../node_modules/lit-html/lit-html.js ***!
  \********************************************/
/*! exports provided: DefaultTemplateProcessor, defaultTemplateProcessor, directive, isDirective, removeNodes, reparentNodes, noChange, nothing, AttributeCommitter, AttributePart, BooleanAttributePart, EventPart, isIterable, isPrimitive, NodePart, PropertyCommitter, PropertyPart, parts, render, templateCaches, templateFactory, TemplateInstance, SVGTemplateResult, TemplateResult, createMarker, isTemplatePartActive, Template, html, svg */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "html", function() { return html; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "svg", function() { return svg; });
/* harmony import */ var _lib_default_template_processor_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./lib/default-template-processor.js */ "../node_modules/lit-html/lib/default-template-processor.js");
/* harmony import */ var _lib_template_result_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./lib/template-result.js */ "../node_modules/lit-html/lib/template-result.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "DefaultTemplateProcessor", function() { return _lib_default_template_processor_js__WEBPACK_IMPORTED_MODULE_0__["DefaultTemplateProcessor"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "defaultTemplateProcessor", function() { return _lib_default_template_processor_js__WEBPACK_IMPORTED_MODULE_0__["defaultTemplateProcessor"]; });

/* harmony import */ var _lib_directive_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./lib/directive.js */ "../node_modules/lit-html/lib/directive.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "directive", function() { return _lib_directive_js__WEBPACK_IMPORTED_MODULE_2__["directive"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "isDirective", function() { return _lib_directive_js__WEBPACK_IMPORTED_MODULE_2__["isDirective"]; });

/* harmony import */ var _lib_dom_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./lib/dom.js */ "../node_modules/lit-html/lib/dom.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "removeNodes", function() { return _lib_dom_js__WEBPACK_IMPORTED_MODULE_3__["removeNodes"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "reparentNodes", function() { return _lib_dom_js__WEBPACK_IMPORTED_MODULE_3__["reparentNodes"]; });

/* harmony import */ var _lib_part_js__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./lib/part.js */ "../node_modules/lit-html/lib/part.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "noChange", function() { return _lib_part_js__WEBPACK_IMPORTED_MODULE_4__["noChange"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "nothing", function() { return _lib_part_js__WEBPACK_IMPORTED_MODULE_4__["nothing"]; });

/* harmony import */ var _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ./lib/parts.js */ "../node_modules/lit-html/lib/parts.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "AttributeCommitter", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["AttributeCommitter"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "AttributePart", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["AttributePart"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "BooleanAttributePart", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["BooleanAttributePart"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "EventPart", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["EventPart"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "isIterable", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["isIterable"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "isPrimitive", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["isPrimitive"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "NodePart", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["NodePart"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "PropertyCommitter", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["PropertyCommitter"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "PropertyPart", function() { return _lib_parts_js__WEBPACK_IMPORTED_MODULE_5__["PropertyPart"]; });

/* harmony import */ var _lib_render_js__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! ./lib/render.js */ "../node_modules/lit-html/lib/render.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "parts", function() { return _lib_render_js__WEBPACK_IMPORTED_MODULE_6__["parts"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "render", function() { return _lib_render_js__WEBPACK_IMPORTED_MODULE_6__["render"]; });

/* harmony import */ var _lib_template_factory_js__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! ./lib/template-factory.js */ "../node_modules/lit-html/lib/template-factory.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "templateCaches", function() { return _lib_template_factory_js__WEBPACK_IMPORTED_MODULE_7__["templateCaches"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "templateFactory", function() { return _lib_template_factory_js__WEBPACK_IMPORTED_MODULE_7__["templateFactory"]; });

/* harmony import */ var _lib_template_instance_js__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! ./lib/template-instance.js */ "../node_modules/lit-html/lib/template-instance.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "TemplateInstance", function() { return _lib_template_instance_js__WEBPACK_IMPORTED_MODULE_8__["TemplateInstance"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "SVGTemplateResult", function() { return _lib_template_result_js__WEBPACK_IMPORTED_MODULE_1__["SVGTemplateResult"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "TemplateResult", function() { return _lib_template_result_js__WEBPACK_IMPORTED_MODULE_1__["TemplateResult"]; });

/* harmony import */ var _lib_template_js__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! ./lib/template.js */ "../node_modules/lit-html/lib/template.js");
/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "createMarker", function() { return _lib_template_js__WEBPACK_IMPORTED_MODULE_9__["createMarker"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "isTemplatePartActive", function() { return _lib_template_js__WEBPACK_IMPORTED_MODULE_9__["isTemplatePartActive"]; });

/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "Template", function() { return _lib_template_js__WEBPACK_IMPORTED_MODULE_9__["Template"]; });

/**
 * @license
 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
/**
 *
 * Main lit-html module.
 *
 * Main exports:
 *
 * -  [[html]]
 * -  [[svg]]
 * -  [[render]]
 *
 * @packageDocumentation
 */
/**
 * Do not remove this comment; it keeps typedoc from misplacing the module
 * docs.
 */




// TODO(justinfagnani): remove line when we get NodePart moving methods








// IMPORTANT: do not change the property name or the assignment expression.
// This line will be used in regexes to search for lit-html usage.
// TODO(justinfagnani): inject version number at build time
if (typeof window !== 'undefined') {
    (window['litHtmlVersions'] || (window['litHtmlVersions'] = [])).push('1.3.0');
}
/**
 * Interprets a template literal as an HTML template that can efficiently
 * render to and update a container.
 */
const html = (strings, ...values) => new _lib_template_result_js__WEBPACK_IMPORTED_MODULE_1__["TemplateResult"](strings, values, 'html', _lib_default_template_processor_js__WEBPACK_IMPORTED_MODULE_0__["defaultTemplateProcessor"]);
/**
 * Interprets a template literal as an SVG template that can efficiently
 * render to and update a container.
 */
const svg = (strings, ...values) => new _lib_template_result_js__WEBPACK_IMPORTED_MODULE_1__["SVGTemplateResult"](strings, values, 'svg', _lib_default_template_processor_js__WEBPACK_IMPORTED_MODULE_0__["defaultTemplateProcessor"]);
//# sourceMappingURL=lit-html.js.map

/***/ }),

/***/ "./modules/confirm-dialog-sk/confirm-dialog-sk-demo.ts":
/*!*************************************************************!*\
  !*** ./modules/confirm-dialog-sk/confirm-dialog-sk-demo.ts ***!
  \*************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
__webpack_require__(/*! elements-sk/styles/buttons */ "../node_modules/elements-sk/styles/buttons/index.js");
const dom_1 = __webpack_require__(/*! common-sk/modules/dom */ "../node_modules/common-sk/modules/dom.js");
__webpack_require__(/*! ./index */ "./modules/confirm-dialog-sk/index.ts");
dom_1.$$('#ask').addEventListener('click', (e) => {
    dom_1.$$('#dialog').open('Do something dangerous?').then(() => {
        dom_1.$$('#results').textContent = 'Confirmed!';
    }).catch(() => {
        dom_1.$$('#results').textContent = 'Cancelled!';
    });
});


/***/ }),

/***/ "./modules/confirm-dialog-sk/confirm-dialog-sk.scss":
/*!**********************************************************!*\
  !*** ./modules/confirm-dialog-sk/confirm-dialog-sk.scss ***!
  \**********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),

/***/ "./modules/confirm-dialog-sk/confirm-dialog-sk.ts":
/*!********************************************************!*\
  !*** ./modules/confirm-dialog-sk/confirm-dialog-sk.ts ***!
  \********************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConfirmDialogSk = void 0;
/**
 * @module infra-sk/modules/confirm-dialog-sk
 * @description <h2><code>confirm-dialog-sk</code></h2>
 *
 * <p>
 * This element pops up a dialog with OK and Cancel buttons. Its open method returns a Promise
 * which will resolve when the user clicks OK or reject when the user clicks Cancel.
 * </p>
 *
 * @example
 *
 * <confirm-dialog-sk id="confirm_dialog"></confirm-dialog-sk>
 *
 * <script>
 *   (function(){
 *     $$('#confirm-dialog').open("Proceed with taking over the world?").then(() => {
 *       // Do some thing on confirm.
 *     }).catch(() => {
 *       // Do some thing on cancel.
 *     });
 *   })();
 * </script>
 *
 */
const define_1 = __webpack_require__(/*! elements-sk/define */ "../node_modules/elements-sk/define.js");
const dialog_polyfill_1 = __importDefault(__webpack_require__(/*! dialog-polyfill */ "../node_modules/dialog-polyfill/dist/dialog-polyfill.esm.js"));
const lit_html_1 = __webpack_require__(/*! lit-html */ "../node_modules/lit-html/lit-html.js");
__webpack_require__(/*! elements-sk/styles/buttons */ "../node_modules/elements-sk/styles/buttons/index.js");
class ConfirmDialogSk extends HTMLElement {
    constructor() {
        super(...arguments);
        this.message = '';
        this.dialog = null;
        this.resolve = null;
        this.reject = null;
    }
    connectedCallback() {
        this.render();
        this.dialog = this.querySelector('dialog');
        dialog_polyfill_1.default.registerDialog(this.dialog);
    }
    /**
     * Display the dialog.
     *
     * @param message Message to display. Text only, any markup will be escaped.
     * @returns Returns a Promise that resolves on OK, and rejects on Cancel.
     */
    open(message) {
        this.message = message;
        this.render();
        this.dialog.showModal();
        return new Promise((resolve, reject) => {
            this.resolve = resolve;
            this.reject = reject;
        });
    }
    dismiss() {
        this.dialog.close();
        this.reject();
    }
    confirm() {
        this.dialog.close();
        this.resolve();
    }
    render() {
        lit_html_1.render(ConfirmDialogSk.template(this), this, { eventContext: this });
    }
}
exports.ConfirmDialogSk = ConfirmDialogSk;
ConfirmDialogSk.template = (ele) => lit_html_1.html `
    <dialog @cancel=${ele.dismiss}>
      <h2>Confirm</h2>
      <div class=message>${ele.message}</div>
      <div class=buttons>
      <button class=dismiss @click=${ele.dismiss}>Cancel</button>
      <button class=confirm @click=${ele.confirm}>OK</button>
      </div>
    </dialog>
  `;
define_1.define('confirm-dialog-sk', ConfirmDialogSk);


/***/ }),

/***/ "./modules/confirm-dialog-sk/index.ts":
/*!********************************************!*\
  !*** ./modules/confirm-dialog-sk/index.ts ***!
  \********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
__webpack_require__(/*! ./confirm-dialog-sk.scss */ "./modules/confirm-dialog-sk/confirm-dialog-sk.scss");
__webpack_require__(/*! ./confirm-dialog-sk */ "./modules/confirm-dialog-sk/confirm-dialog-sk.ts");


/***/ })

/******/ });
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Returns null if none are found.\n *\n * @example\n *\n *   findParentSafe(ele, 'div')\n *\n */\nexport function findParentSafe(ele, nodeName) {\n    while (ele !== null) {\n        if (ele.nodeName.toLowerCase() === nodeName) {\n            return ele;\n        }\n        ele = ele.parentElement;\n    }\n    return null;\n}\n//# sourceMappingURL=dom.js.map","// nb. This is for IE10 and lower _only_.\nvar supportCustomEvent = window.CustomEvent;\nif (!supportCustomEvent || typeof supportCustomEvent === 'object') {\n  supportCustomEvent = function CustomEvent(event, x) {\n    x = x || {};\n    var ev = document.createEvent('CustomEvent');\n    ev.initCustomEvent(event, !!x.bubbles, !!x.cancelable, x.detail || null);\n    return ev;\n  };\n  supportCustomEvent.prototype = window.Event.prototype;\n}\n\n/**\n * Dispatches the passed event to both an \"on<type>\" handler as well as via the\n * normal dispatch operation. Does not bubble.\n *\n * @param {!EventTarget} target\n * @param {!Event} event\n * @return {boolean}\n */\nfunction safeDispatchEvent(target, event) {\n  var check = 'on' + event.type.toLowerCase();\n  if (typeof target[check] === 'function') {\n    target[check](event);\n  }\n  return target.dispatchEvent(event);\n}\n\n/**\n * @param {Element} el to check for stacking context\n * @return {boolean} whether this el or its parents creates a stacking context\n */\nfunction createsStackingContext(el) {\n  while (el && el !== document.body) {\n    var s = window.getComputedStyle(el);\n    var invalid = function(k, ok) {\n      return !(s[k] === undefined || s[k] === ok);\n    };\n\n    if (s.opacity < 1 ||\n        invalid('zIndex', 'auto') ||\n        invalid('transform', 'none') ||\n        invalid('mixBlendMode', 'normal') ||\n        invalid('filter', 'none') ||\n        invalid('perspective', 'none') ||\n        s['isolation'] === 'isolate' ||\n        s.position === 'fixed' ||\n        s.webkitOverflowScrolling === 'touch') {\n      return true;\n    }\n    el = el.parentElement;\n  }\n  return false;\n}\n\n/**\n * Finds the nearest <dialog> from the passed element.\n *\n * @param {Element} el to search from\n * @return {HTMLDialogElement} dialog found\n */\nfunction findNearestDialog(el) {\n  while (el) {\n    if (el.localName === 'dialog') {\n      return /** @type {HTMLDialogElement} */ (el);\n    }\n    if (el.parentElement) {\n      el = el.parentElement;\n    } else if (el.parentNode) {\n      el = el.parentNode.host;\n    } else {\n      el = null;\n    }\n  }\n  return null;\n}\n\n/**\n * Blur the specified element, as long as it's not the HTML body element.\n * This works around an IE9/10 bug - blurring the body causes Windows to\n * blur the whole application.\n *\n * @param {Element} el to blur\n */\nfunction safeBlur(el) {\n  // Find the actual focused element when the active element is inside a shadow root\n  while (el && el.shadowRoot && el.shadowRoot.activeElement) {\n    el = el.shadowRoot.activeElement;\n  }\n\n  if (el && el.blur && el !== document.body) {\n    el.blur();\n  }\n}\n\n/**\n * @param {!NodeList} nodeList to search\n * @param {Node} node to find\n * @return {boolean} whether node is inside nodeList\n */\nfunction inNodeList(nodeList, node) {\n  for (var i = 0; i < nodeList.length; ++i) {\n    if (nodeList[i] === node) {\n      return true;\n    }\n  }\n  return false;\n}\n\n/**\n * @param {HTMLFormElement} el to check\n * @return {boolean} whether this form has method=\"dialog\"\n */\nfunction isFormMethodDialog(el) {\n  if (!el || !el.hasAttribute('method')) {\n    return false;\n  }\n  return el.getAttribute('method').toLowerCase() === 'dialog';\n}\n\n/**\n * @param {!DocumentFragment|!Element} hostElement\n * @return {?Element}\n */\nfunction findFocusableElementWithin(hostElement) {\n  // Note that this is 'any focusable area'. This list is probably not exhaustive, but the\n  // alternative involves stepping through and trying to focus everything.\n  var opts = ['button', 'input', 'keygen', 'select', 'textarea'];\n  var query = opts.map(function(el) {\n    return el + ':not([disabled])';\n  });\n  // TODO(samthor): tabindex values that are not numeric are not focusable.\n  query.push('[tabindex]:not([disabled]):not([tabindex=\"\"])');  // tabindex != \"\", not disabled\n  var target = hostElement.querySelector(query.join(', '));\n\n  if (!target && 'attachShadow' in Element.prototype) {\n    // If we haven't found a focusable target, see if the host element contains an element\n    // which has a shadowRoot.\n    // Recursively search for the first focusable item in shadow roots.\n    var elems = hostElement.querySelectorAll('*');\n    for (var i = 0; i < elems.length; i++) {\n      if (elems[i].tagName && elems[i].shadowRoot) {\n        target = findFocusableElementWithin(elems[i].shadowRoot);\n        if (target) {\n          break;\n        }\n      }\n    }\n  }\n  return target;\n}\n\n/**\n * Determines if an element is attached to the DOM.\n * @param {Element} element to check\n * @return {boolean} whether the element is in DOM\n */\nfunction isConnected(element) {\n  return element.isConnected || document.body.contains(element);\n}\n\n/**\n * @param {!Event} event\n * @return {?Element}\n */\nfunction findFormSubmitter(event) {\n  if (event.submitter) {\n    return event.submitter;\n  }\n\n  var form = event.target;\n  if (!(form instanceof HTMLFormElement)) {\n    return null;\n  }\n\n  var submitter = dialogPolyfill.formSubmitter;\n  if (!submitter) {\n    var target = event.target;\n    var root = ('getRootNode' in target && target.getRootNode() || document);\n    submitter = root.activeElement;\n  }\n\n  if (!submitter || submitter.form !== form) {\n    return null;\n  }\n  return submitter;\n}\n\n/**\n * @param {!Event} event\n */\nfunction maybeHandleSubmit(event) {\n  if (event.defaultPrevented) {\n    return;\n  }\n  var form = /** @type {!HTMLFormElement} */ (event.target);\n\n  // We'd have a value if we clicked on an imagemap.\n  var value = dialogPolyfill.imagemapUseValue;\n  var submitter = findFormSubmitter(event);\n  if (value === null && submitter) {\n    value = submitter.value;\n  }\n\n  // There should always be a dialog as this handler is added specifically on them, but check just\n  // in case.\n  var dialog = findNearestDialog(form);\n  if (!dialog) {\n    return;\n  }\n\n  // Prefer formmethod on the button.\n  var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');\n  if (formmethod !== 'dialog') {\n    return;\n  }\n  event.preventDefault();\n\n  if (value != null) {\n    // nb. we explicitly check against null/undefined\n    dialog.close(value);\n  } else {\n    dialog.close();\n  }\n}\n\n/**\n * @param {!HTMLDialogElement} dialog to upgrade\n * @constructor\n */\nfunction dialogPolyfillInfo(dialog) {\n  this.dialog_ = dialog;\n  this.replacedStyleTop_ = false;\n  this.openAsModal_ = false;\n\n  // Set a11y role. Browsers that support dialog implicitly know this already.\n  if (!dialog.hasAttribute('role')) {\n    dialog.setAttribute('role', 'dialog');\n  }\n\n  dialog.show = this.show.bind(this);\n  dialog.showModal = this.showModal.bind(this);\n  dialog.close = this.close.bind(this);\n\n  dialog.addEventListener('submit', maybeHandleSubmit, false);\n\n  if (!('returnValue' in dialog)) {\n    dialog.returnValue = '';\n  }\n\n  if ('MutationObserver' in window) {\n    var mo = new MutationObserver(this.maybeHideModal.bind(this));\n    mo.observe(dialog, {attributes: true, attributeFilter: ['open']});\n  } else {\n    // IE10 and below support. Note that DOMNodeRemoved etc fire _before_ removal. They also\n    // seem to fire even if the element was removed as part of a parent removal. Use the removed\n    // events to force downgrade (useful if removed/immediately added).\n    var removed = false;\n    var cb = function() {\n      removed ? this.downgradeModal() : this.maybeHideModal();\n      removed = false;\n    }.bind(this);\n    var timeout;\n    var delayModel = function(ev) {\n      if (ev.target !== dialog) { return; }  // not for a child element\n      var cand = 'DOMNodeRemoved';\n      removed |= (ev.type.substr(0, cand.length) === cand);\n      window.clearTimeout(timeout);\n      timeout = window.setTimeout(cb, 0);\n    };\n    ['DOMAttrModified', 'DOMNodeRemoved', 'DOMNodeRemovedFromDocument'].forEach(function(name) {\n      dialog.addEventListener(name, delayModel);\n    });\n  }\n  // Note that the DOM is observed inside DialogManager while any dialog\n  // is being displayed as a modal, to catch modal removal from the DOM.\n\n  Object.defineProperty(dialog, 'open', {\n    set: this.setOpen.bind(this),\n    get: dialog.hasAttribute.bind(dialog, 'open')\n  });\n\n  this.backdrop_ = document.createElement('div');\n  this.backdrop_.className = 'backdrop';\n  this.backdrop_.addEventListener('mouseup'  , this.backdropMouseEvent_.bind(this));\n  this.backdrop_.addEventListener('mousedown', this.backdropMouseEvent_.bind(this));\n  this.backdrop_.addEventListener('click'    , this.backdropMouseEvent_.bind(this));\n}\n\ndialogPolyfillInfo.prototype = /** @type {HTMLDialogElement.prototype} */ ({\n\n  get dialog() {\n    return this.dialog_;\n  },\n\n  /**\n   * Maybe remove this dialog from the modal top layer. This is called when\n   * a modal dialog may no longer be tenable, e.g., when the dialog is no\n   * longer open or is no longer part of the DOM.\n   */\n  maybeHideModal: function() {\n    if (this.dialog_.hasAttribute('open') && isConnected(this.dialog_)) { return; }\n    this.downgradeModal();\n  },\n\n  /**\n   * Remove this dialog from the modal top layer, leaving it as a non-modal.\n   */\n  downgradeModal: function() {\n    if (!this.openAsModal_) { return; }\n    this.openAsModal_ = false;\n    this.dialog_.style.zIndex = '';\n\n    // This won't match the native <dialog> exactly because if the user set top on a centered\n    // polyfill dialog, that top gets thrown away when the dialog is closed. Not sure it's\n    // possible to polyfill this perfectly.\n    if (this.replacedStyleTop_) {\n      this.dialog_.style.top = '';\n      this.replacedStyleTop_ = false;\n    }\n\n    // Clear the backdrop and remove from the manager.\n    this.backdrop_.parentNode && this.backdrop_.parentNode.removeChild(this.backdrop_);\n    dialogPolyfill.dm.removeDialog(this);\n  },\n\n  /**\n   * @param {boolean} value whether to open or close this dialog\n   */\n  setOpen: function(value) {\n    if (value) {\n      this.dialog_.hasAttribute('open') || this.dialog_.setAttribute('open', '');\n    } else {\n      this.dialog_.removeAttribute('open');\n      this.maybeHideModal();  // nb. redundant with MutationObserver\n    }\n  },\n\n  /**\n   * Handles mouse events ('mouseup', 'mousedown', 'click') on the fake .backdrop element, redirecting them as if\n   * they were on the dialog itself.\n   *\n   * @param {!Event} e to redirect\n   */\n  backdropMouseEvent_: function(e) {\n    if (!this.dialog_.hasAttribute('tabindex')) {\n      // Clicking on the backdrop should move the implicit cursor, even if dialog cannot be\n      // focused. Create a fake thing to focus on. If the backdrop was _before_ the dialog, this\n      // would not be needed - clicks would move the implicit cursor there.\n      var fake = document.createElement('div');\n      this.dialog_.insertBefore(fake, this.dialog_.firstChild);\n      fake.tabIndex = -1;\n      fake.focus();\n      this.dialog_.removeChild(fake);\n    } else {\n      this.dialog_.focus();\n    }\n\n    var redirectedEvent = document.createEvent('MouseEvents');\n    redirectedEvent.initMouseEvent(e.type, e.bubbles, e.cancelable, window,\n        e.detail, e.screenX, e.screenY, e.clientX, e.clientY, e.ctrlKey,\n        e.altKey, e.shiftKey, e.metaKey, e.button, e.relatedTarget);\n    this.dialog_.dispatchEvent(redirectedEvent);\n    e.stopPropagation();\n  },\n\n  /**\n   * Focuses on the first focusable element within the dialog. This will always blur the current\n   * focus, even if nothing within the dialog is found.\n   */\n  focus_: function() {\n    // Find element with `autofocus` attribute, or fall back to the first form/tabindex control.\n    var target = this.dialog_.querySelector('[autofocus]:not([disabled])');\n    if (!target && this.dialog_.tabIndex >= 0) {\n      target = this.dialog_;\n    }\n    if (!target) {\n      target = findFocusableElementWithin(this.dialog_);\n    }\n    safeBlur(document.activeElement);\n    target && target.focus();\n  },\n\n  /**\n   * Sets the zIndex for the backdrop and dialog.\n   *\n   * @param {number} dialogZ\n   * @param {number} backdropZ\n   */\n  updateZIndex: function(dialogZ, backdropZ) {\n    if (dialogZ < backdropZ) {\n      throw new Error('dialogZ should never be < backdropZ');\n    }\n    this.dialog_.style.zIndex = dialogZ;\n    this.backdrop_.style.zIndex = backdropZ;\n  },\n\n  /**\n   * Shows the dialog. If the dialog is already open, this does nothing.\n   */\n  show: function() {\n    if (!this.dialog_.open) {\n      this.setOpen(true);\n      this.focus_();\n    }\n  },\n\n  /**\n   * Show this dialog modally.\n   */\n  showModal: function() {\n    if (this.dialog_.hasAttribute('open')) {\n      throw new Error('Failed to execute \\'showModal\\' on dialog: The element is already open, and therefore cannot be opened modally.');\n    }\n    if (!isConnected(this.dialog_)) {\n      throw new Error('Failed to execute \\'showModal\\' on dialog: The element is not in a Document.');\n    }\n    if (!dialogPolyfill.dm.pushDialog(this)) {\n      throw new Error('Failed to execute \\'showModal\\' on dialog: There are too many open modal dialogs.');\n    }\n\n    if (createsStackingContext(this.dialog_.parentElement)) {\n      console.warn('A dialog is being shown inside a stacking context. ' +\n          'This may cause it to be unusable. For more information, see this link: ' +\n          'https://github.com/GoogleChrome/dialog-polyfill/#stacking-context');\n    }\n\n    this.setOpen(true);\n    this.openAsModal_ = true;\n\n    // Optionally center vertically, relative to the current viewport.\n    if (dialogPolyfill.needsCentering(this.dialog_)) {\n      dialogPolyfill.reposition(this.dialog_);\n      this.replacedStyleTop_ = true;\n    } else {\n      this.replacedStyleTop_ = false;\n    }\n\n    // Insert backdrop.\n    this.dialog_.parentNode.insertBefore(this.backdrop_, this.dialog_.nextSibling);\n\n    // Focus on whatever inside the dialog.\n    this.focus_();\n  },\n\n  /**\n   * Closes this HTMLDialogElement. This is optional vs clearing the open\n   * attribute, however this fires a 'close' event.\n   *\n   * @param {string=} opt_returnValue to use as the returnValue\n   */\n  close: function(opt_returnValue) {\n    if (!this.dialog_.hasAttribute('open')) {\n      throw new Error('Failed to execute \\'close\\' on dialog: The element does not have an \\'open\\' attribute, and therefore cannot be closed.');\n    }\n    this.setOpen(false);\n\n    // Leave returnValue untouched in case it was set directly on the element\n    if (opt_returnValue !== undefined) {\n      this.dialog_.returnValue = opt_returnValue;\n    }\n\n    // Triggering \"close\" event for any attached listeners on the <dialog>.\n    var closeEvent = new supportCustomEvent('close', {\n      bubbles: false,\n      cancelable: false\n    });\n    safeDispatchEvent(this.dialog_, closeEvent);\n  }\n\n});\n\nvar dialogPolyfill = {};\n\ndialogPolyfill.reposition = function(element) {\n  var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;\n  var topValue = scrollTop + (window.innerHeight - element.offsetHeight) / 2;\n  element.style.top = Math.max(scrollTop, topValue) + 'px';\n};\n\ndialogPolyfill.isInlinePositionSetByStylesheet = function(element) {\n  for (var i = 0; i < document.styleSheets.length; ++i) {\n    var styleSheet = document.styleSheets[i];\n    var cssRules = null;\n    // Some browsers throw on cssRules.\n    try {\n      cssRules = styleSheet.cssRules;\n    } catch (e) {}\n    if (!cssRules) { continue; }\n    for (var j = 0; j < cssRules.length; ++j) {\n      var rule = cssRules[j];\n      var selectedNodes = null;\n      // Ignore errors on invalid selector texts.\n      try {\n        selectedNodes = document.querySelectorAll(rule.selectorText);\n      } catch(e) {}\n      if (!selectedNodes || !inNodeList(selectedNodes, element)) {\n        continue;\n      }\n      var cssTop = rule.style.getPropertyValue('top');\n      var cssBottom = rule.style.getPropertyValue('bottom');\n      if ((cssTop && cssTop !== 'auto') || (cssBottom && cssBottom !== 'auto')) {\n        return true;\n      }\n    }\n  }\n  return false;\n};\n\ndialogPolyfill.needsCentering = function(dialog) {\n  var computedStyle = window.getComputedStyle(dialog);\n  if (computedStyle.position !== 'absolute') {\n    return false;\n  }\n\n  // We must determine whether the top/bottom specified value is non-auto.  In\n  // WebKit/Blink, checking computedStyle.top == 'auto' is sufficient, but\n  // Firefox returns the used value. So we do this crazy thing instead: check\n  // the inline style and then go through CSS rules.\n  if ((dialog.style.top !== 'auto' && dialog.style.top !== '') ||\n      (dialog.style.bottom !== 'auto' && dialog.style.bottom !== '')) {\n    return false;\n  }\n  return !dialogPolyfill.isInlinePositionSetByStylesheet(dialog);\n};\n\n/**\n * @param {!Element} element to force upgrade\n */\ndialogPolyfill.forceRegisterDialog = function(element) {\n  if (window.HTMLDialogElement || element.showModal) {\n    console.warn('This browser already supports <dialog>, the polyfill ' +\n        'may not work correctly', element);\n  }\n  if (element.localName !== 'dialog') {\n    throw new Error('Failed to register dialog: The element is not a dialog.');\n  }\n  new dialogPolyfillInfo(/** @type {!HTMLDialogElement} */ (element));\n};\n\n/**\n * @param {!Element} element to upgrade, if necessary\n */\ndialogPolyfill.registerDialog = function(element) {\n  if (!element.showModal) {\n    dialogPolyfill.forceRegisterDialog(element);\n  }\n};\n\n/**\n * @constructor\n */\ndialogPolyfill.DialogManager = function() {\n  /** @type {!Array<!dialogPolyfillInfo>} */\n  this.pendingDialogStack = [];\n\n  var checkDOM = this.checkDOM_.bind(this);\n\n  // The overlay is used to simulate how a modal dialog blocks the document.\n  // The blocking dialog is positioned on top of the overlay, and the rest of\n  // the dialogs on the pending dialog stack are positioned below it. In the\n  // actual implementation, the modal dialog stacking is controlled by the\n  // top layer, where z-index has no effect.\n  this.overlay = document.createElement('div');\n  this.overlay.className = '_dialog_overlay';\n  this.overlay.addEventListener('click', function(e) {\n    this.forwardTab_ = undefined;\n    e.stopPropagation();\n    checkDOM([]);  // sanity-check DOM\n  }.bind(this));\n\n  this.handleKey_ = this.handleKey_.bind(this);\n  this.handleFocus_ = this.handleFocus_.bind(this);\n\n  this.zIndexLow_ = 100000;\n  this.zIndexHigh_ = 100000 + 150;\n\n  this.forwardTab_ = undefined;\n\n  if ('MutationObserver' in window) {\n    this.mo_ = new MutationObserver(function(records) {\n      var removed = [];\n      records.forEach(function(rec) {\n        for (var i = 0, c; c = rec.removedNodes[i]; ++i) {\n          if (!(c instanceof Element)) {\n            continue;\n          } else if (c.localName === 'dialog') {\n            removed.push(c);\n          }\n          removed = removed.concat(c.querySelectorAll('dialog'));\n        }\n      });\n      removed.length && checkDOM(removed);\n    });\n  }\n};\n\n/**\n * Called on the first modal dialog being shown. Adds the overlay and related\n * handlers.\n */\ndialogPolyfill.DialogManager.prototype.blockDocument = function() {\n  document.documentElement.addEventListener('focus', this.handleFocus_, true);\n  document.addEventListener('keydown', this.handleKey_);\n  this.mo_ && this.mo_.observe(document, {childList: true, subtree: true});\n};\n\n/**\n * Called on the first modal dialog being removed, i.e., when no more modal\n * dialogs are visible.\n */\ndialogPolyfill.DialogManager.prototype.unblockDocument = function() {\n  document.documentElement.removeEventListener('focus', this.handleFocus_, true);\n  document.removeEventListener('keydown', this.handleKey_);\n  this.mo_ && this.mo_.disconnect();\n};\n\n/**\n * Updates the stacking of all known dialogs.\n */\ndialogPolyfill.DialogManager.prototype.updateStacking = function() {\n  var zIndex = this.zIndexHigh_;\n\n  for (var i = 0, dpi; dpi = this.pendingDialogStack[i]; ++i) {\n    dpi.updateZIndex(--zIndex, --zIndex);\n    if (i === 0) {\n      this.overlay.style.zIndex = --zIndex;\n    }\n  }\n\n  // Make the overlay a sibling of the dialog itself.\n  var last = this.pendingDialogStack[0];\n  if (last) {\n    var p = last.dialog.parentNode || document.body;\n    p.appendChild(this.overlay);\n  } else if (this.overlay.parentNode) {\n    this.overlay.parentNode.removeChild(this.overlay);\n  }\n};\n\n/**\n * @param {Element} candidate to check if contained or is the top-most modal dialog\n * @return {boolean} whether candidate is contained in top dialog\n */\ndialogPolyfill.DialogManager.prototype.containedByTopDialog_ = function(candidate) {\n  while (candidate = findNearestDialog(candidate)) {\n    for (var i = 0, dpi; dpi = this.pendingDialogStack[i]; ++i) {\n      if (dpi.dialog === candidate) {\n        return i === 0;  // only valid if top-most\n      }\n    }\n    candidate = candidate.parentElement;\n  }\n  return false;\n};\n\ndialogPolyfill.DialogManager.prototype.handleFocus_ = function(event) {\n  var target = event.composedPath ? event.composedPath()[0] : event.target;\n\n  if (this.containedByTopDialog_(target)) { return; }\n\n  if (document.activeElement === document.documentElement) { return; }\n\n  event.preventDefault();\n  event.stopPropagation();\n  safeBlur(/** @type {Element} */ (target));\n\n  if (this.forwardTab_ === undefined) { return; }  // move focus only from a tab key\n\n  var dpi = this.pendingDialogStack[0];\n  var dialog = dpi.dialog;\n  var position = dialog.compareDocumentPosition(target);\n  if (position & Node.DOCUMENT_POSITION_PRECEDING) {\n    if (this.forwardTab_) {\n      // forward\n      dpi.focus_();\n    } else if (target !== document.documentElement) {\n      // backwards if we're not already focused on <html>\n      document.documentElement.focus();\n    }\n  }\n\n  return false;\n};\n\ndialogPolyfill.DialogManager.prototype.handleKey_ = function(event) {\n  this.forwardTab_ = undefined;\n  if (event.keyCode === 27) {\n    event.preventDefault();\n    event.stopPropagation();\n    var cancelEvent = new supportCustomEvent('cancel', {\n      bubbles: false,\n      cancelable: true\n    });\n    var dpi = this.pendingDialogStack[0];\n    if (dpi && safeDispatchEvent(dpi.dialog, cancelEvent)) {\n      dpi.dialog.close();\n    }\n  } else if (event.keyCode === 9) {\n    this.forwardTab_ = !event.shiftKey;\n  }\n};\n\n/**\n * Finds and downgrades any known modal dialogs that are no longer displayed. Dialogs that are\n * removed and immediately readded don't stay modal, they become normal.\n *\n * @param {!Array<!HTMLDialogElement>} removed that have definitely been removed\n */\ndialogPolyfill.DialogManager.prototype.checkDOM_ = function(removed) {\n  // This operates on a clone because it may cause it to change. Each change also calls\n  // updateStacking, which only actually needs to happen once. But who removes many modal dialogs\n  // at a time?!\n  var clone = this.pendingDialogStack.slice();\n  clone.forEach(function(dpi) {\n    if (removed.indexOf(dpi.dialog) !== -1) {\n      dpi.downgradeModal();\n    } else {\n      dpi.maybeHideModal();\n    }\n  });\n};\n\n/**\n * @param {!dialogPolyfillInfo} dpi\n * @return {boolean} whether the dialog was allowed\n */\ndialogPolyfill.DialogManager.prototype.pushDialog = function(dpi) {\n  var allowed = (this.zIndexHigh_ - this.zIndexLow_) / 2 - 1;\n  if (this.pendingDialogStack.length >= allowed) {\n    return false;\n  }\n  if (this.pendingDialogStack.unshift(dpi) === 1) {\n    this.blockDocument();\n  }\n  this.updateStacking();\n  return true;\n};\n\n/**\n * @param {!dialogPolyfillInfo} dpi\n */\ndialogPolyfill.DialogManager.prototype.removeDialog = function(dpi) {\n  var index = this.pendingDialogStack.indexOf(dpi);\n  if (index === -1) { return; }\n\n  this.pendingDialogStack.splice(index, 1);\n  if (this.pendingDialogStack.length === 0) {\n    this.unblockDocument();\n  }\n  this.updateStacking();\n};\n\ndialogPolyfill.dm = new dialogPolyfill.DialogManager();\ndialogPolyfill.formSubmitter = null;\ndialogPolyfill.imagemapUseValue = null;\n\n/**\n * Installs global handlers, such as click listers and native method overrides. These are needed\n * even if a no dialog is registered, as they deal with <form method=\"dialog\">.\n */\nif (window.HTMLDialogElement === undefined) {\n\n  /**\n   * If HTMLFormElement translates method=\"DIALOG\" into 'get', then replace the descriptor with\n   * one that returns the correct value.\n   */\n  var testForm = document.createElement('form');\n  testForm.setAttribute('method', 'dialog');\n  if (testForm.method !== 'dialog') {\n    var methodDescriptor = Object.getOwnPropertyDescriptor(HTMLFormElement.prototype, 'method');\n    if (methodDescriptor) {\n      // nb. Some older iOS and older PhantomJS fail to return the descriptor. Don't do anything\n      // and don't bother to update the element.\n      var realGet = methodDescriptor.get;\n      methodDescriptor.get = function() {\n        if (isFormMethodDialog(this)) {\n          return 'dialog';\n        }\n        return realGet.call(this);\n      };\n      var realSet = methodDescriptor.set;\n      /** @this {HTMLElement} */\n      methodDescriptor.set = function(v) {\n        if (typeof v === 'string' && v.toLowerCase() === 'dialog') {\n          return this.setAttribute('method', v);\n        }\n        return realSet.call(this, v);\n      };\n      Object.defineProperty(HTMLFormElement.prototype, 'method', methodDescriptor);\n    }\n  }\n\n  /**\n   * Global 'click' handler, to capture the <input type=\"submit\"> or <button> element which has\n   * submitted a <form method=\"dialog\">. Needed as Safari and others don't report this inside\n   * document.activeElement.\n   */\n  document.addEventListener('click', function(ev) {\n    dialogPolyfill.formSubmitter = null;\n    dialogPolyfill.imagemapUseValue = null;\n    if (ev.defaultPrevented) { return; }  // e.g. a submit which prevents default submission\n\n    var target = /** @type {Element} */ (ev.target);\n    if ('composedPath' in ev) {\n      var path = ev.composedPath();\n      target = path.shift() || target;\n    }\n    if (!target || !isFormMethodDialog(target.form)) { return; }\n\n    var valid = (target.type === 'submit' && ['button', 'input'].indexOf(target.localName) > -1);\n    if (!valid) {\n      if (!(target.localName === 'input' && target.type === 'image')) { return; }\n      // this is a <input type=\"image\">, which can submit forms\n      dialogPolyfill.imagemapUseValue = ev.offsetX + ',' + ev.offsetY;\n    }\n\n    var dialog = findNearestDialog(target);\n    if (!dialog) { return; }\n\n    dialogPolyfill.formSubmitter = target;\n\n  }, false);\n\n  /**\n   * Global 'submit' handler. This handles submits of `method=\"dialog\"` which are invalid, i.e.,\n   * outside a dialog. They get prevented.\n   */\n  document.addEventListener('submit', function(ev) {\n    var form = ev.target;\n    var dialog = findNearestDialog(form);\n    if (dialog) {\n      return;  // ignore, handle there\n    }\n\n    var submitter = findFormSubmitter(ev);\n    var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');\n    if (formmethod === 'dialog') {\n      ev.preventDefault();\n    }\n  });\n\n  /**\n   * Replace the native HTMLFormElement.submit() method, as it won't fire the\n   * submit event and give us a chance to respond.\n   */\n  var nativeFormSubmit = HTMLFormElement.prototype.submit;\n  var replacementFormSubmit = function () {\n    if (!isFormMethodDialog(this)) {\n      return nativeFormSubmit.call(this);\n    }\n    var dialog = findNearestDialog(this);\n    dialog && dialog.close();\n  };\n  HTMLFormElement.prototype.submit = replacementFormSubmit;\n}\n\nexport default dialogPolyfill;\n","// Copyright 2018 Google LLC\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n//     https://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n/** @module elements-sk/define */\n/**\n * Define a custom element definition. It will only define a tag name once\n * and will log an error if there's an attempt to define a tag name a second\n * time. This is useful for tests since you can't undefine a custom element.\n *\n * See also https://github.com/karma-runner/karma/issues/412\n *\n * @param tagName - The name of the tag.\n * @param cl - The class for the given tag.\n *\n * @example\n *\n * Instead of:\n *\n *     window.customElements.define('my-element', class extends HTMLElement {...});\n *\n * Use:\n *\n *     import { define } from 'elements-sk/define'\n *     define('my-element', class extends HTMLElement {...});\n *\n */\nexport function define(tagName, cl) {\n    if (window.customElements.get(tagName) === undefined) {\n        window.customElements.define(tagName, cl);\n    }\n    else {\n        console.log(`Multiple registration attempts for ${tagName}. ` +\n            'This should only happen during testing, ' +\n            'it\\'s probably an error outside of testing.');\n    }\n}\n//# sourceMappingURL=define.js.map","// extracted by mini-css-extract-plugin","// Copyright 2018 Google LLC\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n//     https://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n/** @module elements-sk/styles/buttons\n *\n * @description CSS Styling for native buttons.\n * @example\n *\n * <button>Regular Button</button>\n * <button class=action>Action Button</button>\n * <button class=fab>Floating Action Button</button>\n */\nimport './buttons.scss';\n//# sourceMappingURL=index.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\nimport { AttributeCommitter, BooleanAttributePart, EventPart, NodePart, PropertyCommitter } from './parts.js';\n/**\n * Creates Parts when a template is instantiated.\n */\nexport class DefaultTemplateProcessor {\n    /**\n     * Create parts for an attribute-position binding, given the event, attribute\n     * name, and string literals.\n     *\n     * @param element The element containing the binding\n     * @param name  The attribute name\n     * @param strings The string literals. There are always at least two strings,\n     *   event for fully-controlled bindings with a single expression.\n     */\n    handleAttributeExpressions(element, name, strings, options) {\n        const prefix = name[0];\n        if (prefix === '.') {\n            const committer = new PropertyCommitter(element, name.slice(1), strings);\n            return committer.parts;\n        }\n        if (prefix === '@') {\n            return [new EventPart(element, name.slice(1), options.eventContext)];\n        }\n        if (prefix === '?') {\n            return [new BooleanAttributePart(element, name.slice(1), strings)];\n        }\n        const committer = new AttributeCommitter(element, name, strings);\n        return committer.parts;\n    }\n    /**\n     * Create parts for a text-position binding.\n     * @param templateFactory\n     */\n    handleTextExpression(options) {\n        return new NodePart(options);\n    }\n}\nexport const defaultTemplateProcessor = new DefaultTemplateProcessor();\n//# sourceMappingURL=default-template-processor.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\nconst directives = new WeakMap();\n/**\n * Brands a function as a directive factory function so that lit-html will call\n * the function during template rendering, rather than passing as a value.\n *\n * A _directive_ is a function that takes a Part as an argument. It has the\n * signature: `(part: Part) => void`.\n *\n * A directive _factory_ is a function that takes arguments for data and\n * configuration and returns a directive. Users of directive usually refer to\n * the directive factory as the directive. For example, \"The repeat directive\".\n *\n * Usually a template author will invoke a directive factory in their template\n * with relevant arguments, which will then return a directive function.\n *\n * Here's an example of using the `repeat()` directive factory that takes an\n * array and a function to render an item:\n *\n * ```js\n * html`<ul><${repeat(items, (item) => html`<li>${item}</li>`)}</ul>`\n * ```\n *\n * When `repeat` is invoked, it returns a directive function that closes over\n * `items` and the template function. When the outer template is rendered, the\n * return directive function is called with the Part for the expression.\n * `repeat` then performs it's custom logic to render multiple items.\n *\n * @param f The directive factory function. Must be a function that returns a\n * function of the signature `(part: Part) => void`. The returned function will\n * be called with the part object.\n *\n * @example\n *\n * import {directive, html} from 'lit-html';\n *\n * const immutable = directive((v) => (part) => {\n *   if (part.value !== v) {\n *     part.setValue(v)\n *   }\n * });\n */\nexport const directive = (f) => ((...args) => {\n    const d = f(...args);\n    directives.set(d, true);\n    return d;\n});\nexport const isDirective = (o) => {\n    return typeof o === 'function' && directives.has(o);\n};\n//# sourceMappingURL=directive.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\n/**\n * True if the custom elements polyfill is in use.\n */\nexport const isCEPolyfill = typeof window !== 'undefined' &&\n    window.customElements != null &&\n    window.customElements.polyfillWrapFlushCallback !==\n        undefined;\n/**\n * Reparents nodes, starting from `start` (inclusive) to `end` (exclusive),\n * into another container (could be the same container), before `before`. If\n * `before` is null, it appends the nodes to the container.\n */\nexport const reparentNodes = (container, start, end = null, before = null) => {\n    while (start !== end) {\n        const n = start.nextSibling;\n        container.insertBefore(start, before);\n        start = n;\n    }\n};\n/**\n * Removes nodes, starting from `start` (inclusive) to `end` (exclusive), from\n * `container`.\n */\nexport const removeNodes = (container, start, end = null) => {\n    while (start !== end) {\n        const n = start.nextSibling;\n        container.removeChild(start);\n        start = n;\n    }\n};\n//# sourceMappingURL=dom.js.map","/**\n * @license\n * Copyright (c) 2018 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\n/**\n * A sentinel value that signals that a value was handled by a directive and\n * should not be written to the DOM.\n */\nexport const noChange = {};\n/**\n * A sentinel value that signals a NodePart to fully clear its content.\n */\nexport const nothing = {};\n//# sourceMappingURL=part.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\nimport { isDirective } from './directive.js';\nimport { removeNodes } from './dom.js';\nimport { noChange, nothing } from './part.js';\nimport { TemplateInstance } from './template-instance.js';\nimport { TemplateResult } from './template-result.js';\nimport { createMarker } from './template.js';\nexport const isPrimitive = (value) => {\n    return (value === null ||\n        !(typeof value === 'object' || typeof value === 'function'));\n};\nexport const isIterable = (value) => {\n    return Array.isArray(value) ||\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        !!(value && value[Symbol.iterator]);\n};\n/**\n * Writes attribute values to the DOM for a group of AttributeParts bound to a\n * single attribute. The value is only set once even if there are multiple parts\n * for an attribute.\n */\nexport class AttributeCommitter {\n    constructor(element, name, strings) {\n        this.dirty = true;\n        this.element = element;\n        this.name = name;\n        this.strings = strings;\n        this.parts = [];\n        for (let i = 0; i < strings.length - 1; i++) {\n            this.parts[i] = this._createPart();\n        }\n    }\n    /**\n     * Creates a single part. Override this to create a differnt type of part.\n     */\n    _createPart() {\n        return new AttributePart(this);\n    }\n    _getValue() {\n        const strings = this.strings;\n        const l = strings.length - 1;\n        const parts = this.parts;\n        // If we're assigning an attribute via syntax like:\n        //    attr=\"${foo}\"  or  attr=${foo}\n        // but not\n        //    attr=\"${foo} ${bar}\" or attr=\"${foo} baz\"\n        // then we don't want to coerce the attribute value into one long\n        // string. Instead we want to just return the value itself directly,\n        // so that sanitizeDOMValue can get the actual value rather than\n        // String(value)\n        // The exception is if v is an array, in which case we do want to smash\n        // it together into a string without calling String() on the array.\n        //\n        // This also allows trusted values (when using TrustedTypes) being\n        // assigned to DOM sinks without being stringified in the process.\n        if (l === 1 && strings[0] === '' && strings[1] === '') {\n            const v = parts[0].value;\n            if (typeof v === 'symbol') {\n                return String(v);\n            }\n            if (typeof v === 'string' || !isIterable(v)) {\n                return v;\n            }\n        }\n        let text = '';\n        for (let i = 0; i < l; i++) {\n            text += strings[i];\n            const part = parts[i];\n            if (part !== undefined) {\n                const v = part.value;\n                if (isPrimitive(v) || !isIterable(v)) {\n                    text += typeof v === 'string' ? v : String(v);\n                }\n                else {\n                    for (const t of v) {\n                        text += typeof t === 'string' ? t : String(t);\n                    }\n                }\n            }\n        }\n        text += strings[l];\n        return text;\n    }\n    commit() {\n        if (this.dirty) {\n            this.dirty = false;\n            this.element.setAttribute(this.name, this._getValue());\n        }\n    }\n}\n/**\n * A Part that controls all or part of an attribute value.\n */\nexport class AttributePart {\n    constructor(committer) {\n        this.value = undefined;\n        this.committer = committer;\n    }\n    setValue(value) {\n        if (value !== noChange && (!isPrimitive(value) || value !== this.value)) {\n            this.value = value;\n            // If the value is a not a directive, dirty the committer so that it'll\n            // call setAttribute. If the value is a directive, it'll dirty the\n            // committer if it calls setValue().\n            if (!isDirective(value)) {\n                this.committer.dirty = true;\n            }\n        }\n    }\n    commit() {\n        while (isDirective(this.value)) {\n            const directive = this.value;\n            this.value = noChange;\n            directive(this);\n        }\n        if (this.value === noChange) {\n            return;\n        }\n        this.committer.commit();\n    }\n}\n/**\n * A Part that controls a location within a Node tree. Like a Range, NodePart\n * has start and end locations and can set and update the Nodes between those\n * locations.\n *\n * NodeParts support several value types: primitives, Nodes, TemplateResults,\n * as well as arrays and iterables of those types.\n */\nexport class NodePart {\n    constructor(options) {\n        this.value = undefined;\n        this.__pendingValue = undefined;\n        this.options = options;\n    }\n    /**\n     * Appends this part into a container.\n     *\n     * This part must be empty, as its contents are not automatically moved.\n     */\n    appendInto(container) {\n        this.startNode = container.appendChild(createMarker());\n        this.endNode = container.appendChild(createMarker());\n    }\n    /**\n     * Inserts this part after the `ref` node (between `ref` and `ref`'s next\n     * sibling). Both `ref` and its next sibling must be static, unchanging nodes\n     * such as those that appear in a literal section of a template.\n     *\n     * This part must be empty, as its contents are not automatically moved.\n     */\n    insertAfterNode(ref) {\n        this.startNode = ref;\n        this.endNode = ref.nextSibling;\n    }\n    /**\n     * Appends this part into a parent part.\n     *\n     * This part must be empty, as its contents are not automatically moved.\n     */\n    appendIntoPart(part) {\n        part.__insert(this.startNode = createMarker());\n        part.__insert(this.endNode = createMarker());\n    }\n    /**\n     * Inserts this part after the `ref` part.\n     *\n     * This part must be empty, as its contents are not automatically moved.\n     */\n    insertAfterPart(ref) {\n        ref.__insert(this.startNode = createMarker());\n        this.endNode = ref.endNode;\n        ref.endNode = this.startNode;\n    }\n    setValue(value) {\n        this.__pendingValue = value;\n    }\n    commit() {\n        if (this.startNode.parentNode === null) {\n            return;\n        }\n        while (isDirective(this.__pendingValue)) {\n            const directive = this.__pendingValue;\n            this.__pendingValue = noChange;\n            directive(this);\n        }\n        const value = this.__pendingValue;\n        if (value === noChange) {\n            return;\n        }\n        if (isPrimitive(value)) {\n            if (value !== this.value) {\n                this.__commitText(value);\n            }\n        }\n        else if (value instanceof TemplateResult) {\n            this.__commitTemplateResult(value);\n        }\n        else if (value instanceof Node) {\n            this.__commitNode(value);\n        }\n        else if (isIterable(value)) {\n            this.__commitIterable(value);\n        }\n        else if (value === nothing) {\n            this.value = nothing;\n            this.clear();\n        }\n        else {\n            // Fallback, will render the string representation\n            this.__commitText(value);\n        }\n    }\n    __insert(node) {\n        this.endNode.parentNode.insertBefore(node, this.endNode);\n    }\n    __commitNode(value) {\n        if (this.value === value) {\n            return;\n        }\n        this.clear();\n        this.__insert(value);\n        this.value = value;\n    }\n    __commitText(value) {\n        const node = this.startNode.nextSibling;\n        value = value == null ? '' : value;\n        // If `value` isn't already a string, we explicitly convert it here in case\n        // it can't be implicitly converted - i.e. it's a symbol.\n        const valueAsString = typeof value === 'string' ? value : String(value);\n        if (node === this.endNode.previousSibling &&\n            node.nodeType === 3 /* Node.TEXT_NODE */) {\n            // If we only have a single text node between the markers, we can just\n            // set its value, rather than replacing it.\n            // TODO(justinfagnani): Can we just check if this.value is primitive?\n            node.data = valueAsString;\n        }\n        else {\n            this.__commitNode(document.createTextNode(valueAsString));\n        }\n        this.value = value;\n    }\n    __commitTemplateResult(value) {\n        const template = this.options.templateFactory(value);\n        if (this.value instanceof TemplateInstance &&\n            this.value.template === template) {\n            this.value.update(value.values);\n        }\n        else {\n            // Make sure we propagate the template processor from the TemplateResult\n            // so that we use its syntax extension, etc. The template factory comes\n            // from the render function options so that it can control template\n            // caching and preprocessing.\n            const instance = new TemplateInstance(template, value.processor, this.options);\n            const fragment = instance._clone();\n            instance.update(value.values);\n            this.__commitNode(fragment);\n            this.value = instance;\n        }\n    }\n    __commitIterable(value) {\n        // For an Iterable, we create a new InstancePart per item, then set its\n        // value to the item. This is a little bit of overhead for every item in\n        // an Iterable, but it lets us recurse easily and efficiently update Arrays\n        // of TemplateResults that will be commonly returned from expressions like:\n        // array.map((i) => html`${i}`), by reusing existing TemplateInstances.\n        // If _value is an array, then the previous render was of an\n        // iterable and _value will contain the NodeParts from the previous\n        // render. If _value is not an array, clear this part and make a new\n        // array for NodeParts.\n        if (!Array.isArray(this.value)) {\n            this.value = [];\n            this.clear();\n        }\n        // Lets us keep track of how many items we stamped so we can clear leftover\n        // items from a previous render\n        const itemParts = this.value;\n        let partIndex = 0;\n        let itemPart;\n        for (const item of value) {\n            // Try to reuse an existing part\n            itemPart = itemParts[partIndex];\n            // If no existing part, create a new one\n            if (itemPart === undefined) {\n                itemPart = new NodePart(this.options);\n                itemParts.push(itemPart);\n                if (partIndex === 0) {\n                    itemPart.appendIntoPart(this);\n                }\n                else {\n                    itemPart.insertAfterPart(itemParts[partIndex - 1]);\n                }\n            }\n            itemPart.setValue(item);\n            itemPart.commit();\n            partIndex++;\n        }\n        if (partIndex < itemParts.length) {\n            // Truncate the parts array so _value reflects the current state\n            itemParts.length = partIndex;\n            this.clear(itemPart && itemPart.endNode);\n        }\n    }\n    clear(startNode = this.startNode) {\n        removeNodes(this.startNode.parentNode, startNode.nextSibling, this.endNode);\n    }\n}\n/**\n * Implements a boolean attribute, roughly as defined in the HTML\n * specification.\n *\n * If the value is truthy, then the attribute is present with a value of\n * ''. If the value is falsey, the attribute is removed.\n */\nexport class BooleanAttributePart {\n    constructor(element, name, strings) {\n        this.value = undefined;\n        this.__pendingValue = undefined;\n        if (strings.length !== 2 || strings[0] !== '' || strings[1] !== '') {\n            throw new Error('Boolean attributes can only contain a single expression');\n        }\n        this.element = element;\n        this.name = name;\n        this.strings = strings;\n    }\n    setValue(value) {\n        this.__pendingValue = value;\n    }\n    commit() {\n        while (isDirective(this.__pendingValue)) {\n            const directive = this.__pendingValue;\n            this.__pendingValue = noChange;\n            directive(this);\n        }\n        if (this.__pendingValue === noChange) {\n            return;\n        }\n        const value = !!this.__pendingValue;\n        if (this.value !== value) {\n            if (value) {\n                this.element.setAttribute(this.name, '');\n            }\n            else {\n                this.element.removeAttribute(this.name);\n            }\n            this.value = value;\n        }\n        this.__pendingValue = noChange;\n    }\n}\n/**\n * Sets attribute values for PropertyParts, so that the value is only set once\n * even if there are multiple parts for a property.\n *\n * If an expression controls the whole property value, then the value is simply\n * assigned to the property under control. If there are string literals or\n * multiple expressions, then the strings are expressions are interpolated into\n * a string first.\n */\nexport class PropertyCommitter extends AttributeCommitter {\n    constructor(element, name, strings) {\n        super(element, name, strings);\n        this.single =\n            (strings.length === 2 && strings[0] === '' && strings[1] === '');\n    }\n    _createPart() {\n        return new PropertyPart(this);\n    }\n    _getValue() {\n        if (this.single) {\n            return this.parts[0].value;\n        }\n        return super._getValue();\n    }\n    commit() {\n        if (this.dirty) {\n            this.dirty = false;\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n            this.element[this.name] = this._getValue();\n        }\n    }\n}\nexport class PropertyPart extends AttributePart {\n}\n// Detect event listener options support. If the `capture` property is read\n// from the options object, then options are supported. If not, then the third\n// argument to add/removeEventListener is interpreted as the boolean capture\n// value so we should only pass the `capture` property.\nlet eventOptionsSupported = false;\n// Wrap into an IIFE because MS Edge <= v41 does not support having try/catch\n// blocks right into the body of a module\n(() => {\n    try {\n        const options = {\n            get capture() {\n                eventOptionsSupported = true;\n                return false;\n            }\n        };\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        window.addEventListener('test', options, options);\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        window.removeEventListener('test', options, options);\n    }\n    catch (_e) {\n        // event options not supported\n    }\n})();\nexport class EventPart {\n    constructor(element, eventName, eventContext) {\n        this.value = undefined;\n        this.__pendingValue = undefined;\n        this.element = element;\n        this.eventName = eventName;\n        this.eventContext = eventContext;\n        this.__boundHandleEvent = (e) => this.handleEvent(e);\n    }\n    setValue(value) {\n        this.__pendingValue = value;\n    }\n    commit() {\n        while (isDirective(this.__pendingValue)) {\n            const directive = this.__pendingValue;\n            this.__pendingValue = noChange;\n            directive(this);\n        }\n        if (this.__pendingValue === noChange) {\n            return;\n        }\n        const newListener = this.__pendingValue;\n        const oldListener = this.value;\n        const shouldRemoveListener = newListener == null ||\n            oldListener != null &&\n                (newListener.capture !== oldListener.capture ||\n                    newListener.once !== oldListener.once ||\n                    newListener.passive !== oldListener.passive);\n        const shouldAddListener = newListener != null && (oldListener == null || shouldRemoveListener);\n        if (shouldRemoveListener) {\n            this.element.removeEventListener(this.eventName, this.__boundHandleEvent, this.__options);\n        }\n        if (shouldAddListener) {\n            this.__options = getOptions(newListener);\n            this.element.addEventListener(this.eventName, this.__boundHandleEvent, this.__options);\n        }\n        this.value = newListener;\n        this.__pendingValue = noChange;\n    }\n    handleEvent(event) {\n        if (typeof this.value === 'function') {\n            this.value.call(this.eventContext || this.element, event);\n        }\n        else {\n            this.value.handleEvent(event);\n        }\n    }\n}\n// We copy options because of the inconsistent behavior of browsers when reading\n// the third argument of add/removeEventListener. IE11 doesn't support options\n// at all. Chrome 41 only reads `capture` if the argument is an object.\nconst getOptions = (o) => o &&\n    (eventOptionsSupported ?\n        { capture: o.capture, passive: o.passive, once: o.once } :\n        o.capture);\n//# sourceMappingURL=parts.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\nimport { removeNodes } from './dom.js';\nimport { NodePart } from './parts.js';\nimport { templateFactory } from './template-factory.js';\nexport const parts = new WeakMap();\n/**\n * Renders a template result or other value to a container.\n *\n * To update a container with new values, reevaluate the template literal and\n * call `render` with the new result.\n *\n * @param result Any value renderable by NodePart - typically a TemplateResult\n *     created by evaluating a template tag like `html` or `svg`.\n * @param container A DOM parent to render to. The entire contents are either\n *     replaced, or efficiently updated if the same result type was previous\n *     rendered there.\n * @param options RenderOptions for the entire render tree rendered to this\n *     container. Render options must *not* change between renders to the same\n *     container, as those changes will not effect previously rendered DOM.\n */\nexport const render = (result, container, options) => {\n    let part = parts.get(container);\n    if (part === undefined) {\n        removeNodes(container, container.firstChild);\n        parts.set(container, part = new NodePart(Object.assign({ templateFactory }, options)));\n        part.appendInto(container);\n    }\n    part.setValue(result);\n    part.commit();\n};\n//# sourceMappingURL=render.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\nimport { marker, Template } from './template.js';\n/**\n * The default TemplateFactory which caches Templates keyed on\n * result.type and result.strings.\n */\nexport function templateFactory(result) {\n    let templateCache = templateCaches.get(result.type);\n    if (templateCache === undefined) {\n        templateCache = {\n            stringsArray: new WeakMap(),\n            keyString: new Map()\n        };\n        templateCaches.set(result.type, templateCache);\n    }\n    let template = templateCache.stringsArray.get(result.strings);\n    if (template !== undefined) {\n        return template;\n    }\n    // If the TemplateStringsArray is new, generate a key from the strings\n    // This key is shared between all templates with identical content\n    const key = result.strings.join(marker);\n    // Check if we already have a Template for this key\n    template = templateCache.keyString.get(key);\n    if (template === undefined) {\n        // If we have not seen this key before, create a new Template\n        template = new Template(result, result.getTemplateElement());\n        // Cache the Template for this key\n        templateCache.keyString.set(key, template);\n    }\n    // Cache all future queries for this TemplateStringsArray\n    templateCache.stringsArray.set(result.strings, template);\n    return template;\n}\nexport const templateCaches = new Map();\n//# sourceMappingURL=template-factory.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\nimport { isCEPolyfill } from './dom.js';\nimport { isTemplatePartActive } from './template.js';\n/**\n * An instance of a `Template` that can be attached to the DOM and updated\n * with new values.\n */\nexport class TemplateInstance {\n    constructor(template, processor, options) {\n        this.__parts = [];\n        this.template = template;\n        this.processor = processor;\n        this.options = options;\n    }\n    update(values) {\n        let i = 0;\n        for (const part of this.__parts) {\n            if (part !== undefined) {\n                part.setValue(values[i]);\n            }\n            i++;\n        }\n        for (const part of this.__parts) {\n            if (part !== undefined) {\n                part.commit();\n            }\n        }\n    }\n    _clone() {\n        // There are a number of steps in the lifecycle of a template instance's\n        // DOM fragment:\n        //  1. Clone - create the instance fragment\n        //  2. Adopt - adopt into the main document\n        //  3. Process - find part markers and create parts\n        //  4. Upgrade - upgrade custom elements\n        //  5. Update - set node, attribute, property, etc., values\n        //  6. Connect - connect to the document. Optional and outside of this\n        //     method.\n        //\n        // We have a few constraints on the ordering of these steps:\n        //  * We need to upgrade before updating, so that property values will pass\n        //    through any property setters.\n        //  * We would like to process before upgrading so that we're sure that the\n        //    cloned fragment is inert and not disturbed by self-modifying DOM.\n        //  * We want custom elements to upgrade even in disconnected fragments.\n        //\n        // Given these constraints, with full custom elements support we would\n        // prefer the order: Clone, Process, Adopt, Upgrade, Update, Connect\n        //\n        // But Safari does not implement CustomElementRegistry#upgrade, so we\n        // can not implement that order and still have upgrade-before-update and\n        // upgrade disconnected fragments. So we instead sacrifice the\n        // process-before-upgrade constraint, since in Custom Elements v1 elements\n        // must not modify their light DOM in the constructor. We still have issues\n        // when co-existing with CEv0 elements like Polymer 1, and with polyfills\n        // that don't strictly adhere to the no-modification rule because shadow\n        // DOM, which may be created in the constructor, is emulated by being placed\n        // in the light DOM.\n        //\n        // The resulting order is on native is: Clone, Adopt, Upgrade, Process,\n        // Update, Connect. document.importNode() performs Clone, Adopt, and Upgrade\n        // in one step.\n        //\n        // The Custom Elements v1 polyfill supports upgrade(), so the order when\n        // polyfilled is the more ideal: Clone, Process, Adopt, Upgrade, Update,\n        // Connect.\n        const fragment = isCEPolyfill ?\n            this.template.element.content.cloneNode(true) :\n            document.importNode(this.template.element.content, true);\n        const stack = [];\n        const parts = this.template.parts;\n        // Edge needs all 4 parameters present; IE11 needs 3rd parameter to be null\n        const walker = document.createTreeWalker(fragment, 133 /* NodeFilter.SHOW_{ELEMENT|COMMENT|TEXT} */, null, false);\n        let partIndex = 0;\n        let nodeIndex = 0;\n        let part;\n        let node = walker.nextNode();\n        // Loop through all the nodes and parts of a template\n        while (partIndex < parts.length) {\n            part = parts[partIndex];\n            if (!isTemplatePartActive(part)) {\n                this.__parts.push(undefined);\n                partIndex++;\n                continue;\n            }\n            // Progress the tree walker until we find our next part's node.\n            // Note that multiple parts may share the same node (attribute parts\n            // on a single element), so this loop may not run at all.\n            while (nodeIndex < part.index) {\n                nodeIndex++;\n                if (node.nodeName === 'TEMPLATE') {\n                    stack.push(node);\n                    walker.currentNode = node.content;\n                }\n                if ((node = walker.nextNode()) === null) {\n                    // We've exhausted the content inside a nested template element.\n                    // Because we still have parts (the outer for-loop), we know:\n                    // - There is a template in the stack\n                    // - The walker will find a nextNode outside the template\n                    walker.currentNode = stack.pop();\n                    node = walker.nextNode();\n                }\n            }\n            // We've arrived at our part's node.\n            if (part.type === 'node') {\n                const part = this.processor.handleTextExpression(this.options);\n                part.insertAfterNode(node.previousSibling);\n                this.__parts.push(part);\n            }\n            else {\n                this.__parts.push(...this.processor.handleAttributeExpressions(node, part.name, part.strings, this.options));\n            }\n            partIndex++;\n        }\n        if (isCEPolyfill) {\n            document.adoptNode(fragment);\n            customElements.upgrade(fragment);\n        }\n        return fragment;\n    }\n}\n//# sourceMappingURL=template-instance.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\n/**\n * @module lit-html\n */\nimport { reparentNodes } from './dom.js';\nimport { boundAttributeSuffix, lastAttributeNameRegex, marker, nodeMarker } from './template.js';\n/**\n * Our TrustedTypePolicy for HTML which is declared using the html template\n * tag function.\n *\n * That HTML is a developer-authored constant, and is parsed with innerHTML\n * before any untrusted expressions have been mixed in. Therefor it is\n * considered safe by construction.\n */\nconst policy = window.trustedTypes &&\n    trustedTypes.createPolicy('lit-html', { createHTML: (s) => s });\nconst commentMarker = ` ${marker} `;\n/**\n * The return type of `html`, which holds a Template and the values from\n * interpolated expressions.\n */\nexport class TemplateResult {\n    constructor(strings, values, type, processor) {\n        this.strings = strings;\n        this.values = values;\n        this.type = type;\n        this.processor = processor;\n    }\n    /**\n     * Returns a string of HTML used to create a `<template>` element.\n     */\n    getHTML() {\n        const l = this.strings.length - 1;\n        let html = '';\n        let isCommentBinding = false;\n        for (let i = 0; i < l; i++) {\n            const s = this.strings[i];\n            // For each binding we want to determine the kind of marker to insert\n            // into the template source before it's parsed by the browser's HTML\n            // parser. The marker type is based on whether the expression is in an\n            // attribute, text, or comment position.\n            //   * For node-position bindings we insert a comment with the marker\n            //     sentinel as its text content, like <!--{{lit-guid}}-->.\n            //   * For attribute bindings we insert just the marker sentinel for the\n            //     first binding, so that we support unquoted attribute bindings.\n            //     Subsequent bindings can use a comment marker because multi-binding\n            //     attributes must be quoted.\n            //   * For comment bindings we insert just the marker sentinel so we don't\n            //     close the comment.\n            //\n            // The following code scans the template source, but is *not* an HTML\n            // parser. We don't need to track the tree structure of the HTML, only\n            // whether a binding is inside a comment, and if not, if it appears to be\n            // the first binding in an attribute.\n            const commentOpen = s.lastIndexOf('<!--');\n            // We're in comment position if we have a comment open with no following\n            // comment close. Because <-- can appear in an attribute value there can\n            // be false positives.\n            isCommentBinding = (commentOpen > -1 || isCommentBinding) &&\n                s.indexOf('-->', commentOpen + 1) === -1;\n            // Check to see if we have an attribute-like sequence preceding the\n            // expression. This can match \"name=value\" like structures in text,\n            // comments, and attribute values, so there can be false-positives.\n            const attributeMatch = lastAttributeNameRegex.exec(s);\n            if (attributeMatch === null) {\n                // We're only in this branch if we don't have a attribute-like\n                // preceding sequence. For comments, this guards against unusual\n                // attribute values like <div foo=\"<!--${'bar'}\">. Cases like\n                // <!-- foo=${'bar'}--> are handled correctly in the attribute branch\n                // below.\n                html += s + (isCommentBinding ? commentMarker : nodeMarker);\n            }\n            else {\n                // For attributes we use just a marker sentinel, and also append a\n                // $lit$ suffix to the name to opt-out of attribute-specific parsing\n                // that IE and Edge do for style and certain SVG attributes.\n                html += s.substr(0, attributeMatch.index) + attributeMatch[1] +\n                    attributeMatch[2] + boundAttributeSuffix + attributeMatch[3] +\n                    marker;\n            }\n        }\n        html += this.strings[l];\n        return html;\n    }\n    getTemplateElement() {\n        const template = document.createElement('template');\n        let value = this.getHTML();\n        if (policy !== undefined) {\n            // this is secure because `this.strings` is a TemplateStringsArray.\n            // TODO: validate this when\n            // https://github.com/tc39/proposal-array-is-template-object is\n            // implemented.\n            value = policy.createHTML(value);\n        }\n        template.innerHTML = value;\n        return template;\n    }\n}\n/**\n * A TemplateResult for SVG fragments.\n *\n * This class wraps HTML in an `<svg>` tag in order to parse its contents in the\n * SVG namespace, then modifies the template to remove the `<svg>` tag so that\n * clones only container the original fragment.\n */\nexport class SVGTemplateResult extends TemplateResult {\n    getHTML() {\n        return `<svg>${super.getHTML()}</svg>`;\n    }\n    getTemplateElement() {\n        const template = super.getTemplateElement();\n        const content = template.content;\n        const svgElement = content.firstChild;\n        content.removeChild(svgElement);\n        reparentNodes(content, svgElement.firstChild);\n        return template;\n    }\n}\n//# sourceMappingURL=template-result.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\n/**\n * An expression marker with embedded unique key to avoid collision with\n * possible text in templates.\n */\nexport const marker = `{{lit-${String(Math.random()).slice(2)}}}`;\n/**\n * An expression marker used text-positions, multi-binding attributes, and\n * attributes with markup-like text values.\n */\nexport const nodeMarker = `<!--${marker}-->`;\nexport const markerRegex = new RegExp(`${marker}|${nodeMarker}`);\n/**\n * Suffix appended to all bound attribute names.\n */\nexport const boundAttributeSuffix = '$lit$';\n/**\n * An updatable Template that tracks the location of dynamic parts.\n */\nexport class Template {\n    constructor(result, element) {\n        this.parts = [];\n        this.element = element;\n        const nodesToRemove = [];\n        const stack = [];\n        // Edge needs all 4 parameters present; IE11 needs 3rd parameter to be null\n        const walker = document.createTreeWalker(element.content, 133 /* NodeFilter.SHOW_{ELEMENT|COMMENT|TEXT} */, null, false);\n        // Keeps track of the last index associated with a part. We try to delete\n        // unnecessary nodes, but we never want to associate two different parts\n        // to the same index. They must have a constant node between.\n        let lastPartIndex = 0;\n        let index = -1;\n        let partIndex = 0;\n        const { strings, values: { length } } = result;\n        while (partIndex < length) {\n            const node = walker.nextNode();\n            if (node === null) {\n                // We've exhausted the content inside a nested template element.\n                // Because we still have parts (the outer for-loop), we know:\n                // - There is a template in the stack\n                // - The walker will find a nextNode outside the template\n                walker.currentNode = stack.pop();\n                continue;\n            }\n            index++;\n            if (node.nodeType === 1 /* Node.ELEMENT_NODE */) {\n                if (node.hasAttributes()) {\n                    const attributes = node.attributes;\n                    const { length } = attributes;\n                    // Per\n                    // https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap,\n                    // attributes are not guaranteed to be returned in document order.\n                    // In particular, Edge/IE can return them out of order, so we cannot\n                    // assume a correspondence between part index and attribute index.\n                    let count = 0;\n                    for (let i = 0; i < length; i++) {\n                        if (endsWith(attributes[i].name, boundAttributeSuffix)) {\n                            count++;\n                        }\n                    }\n                    while (count-- > 0) {\n                        // Get the template literal section leading up to the first\n                        // expression in this attribute\n                        const stringForPart = strings[partIndex];\n                        // Find the attribute name\n                        const name = lastAttributeNameRegex.exec(stringForPart)[2];\n                        // Find the corresponding attribute\n                        // All bound attributes have had a suffix added in\n                        // TemplateResult#getHTML to opt out of special attribute\n                        // handling. To look up the attribute value we also need to add\n                        // the suffix.\n                        const attributeLookupName = name.toLowerCase() + boundAttributeSuffix;\n                        const attributeValue = node.getAttribute(attributeLookupName);\n                        node.removeAttribute(attributeLookupName);\n                        const statics = attributeValue.split(markerRegex);\n                        this.parts.push({ type: 'attribute', index, name, strings: statics });\n                        partIndex += statics.length - 1;\n                    }\n                }\n                if (node.tagName === 'TEMPLATE') {\n                    stack.push(node);\n                    walker.currentNode = node.content;\n                }\n            }\n            else if (node.nodeType === 3 /* Node.TEXT_NODE */) {\n                const data = node.data;\n                if (data.indexOf(marker) >= 0) {\n                    const parent = node.parentNode;\n                    const strings = data.split(markerRegex);\n                    const lastIndex = strings.length - 1;\n                    // Generate a new text node for each literal section\n                    // These nodes are also used as the markers for node parts\n                    for (let i = 0; i < lastIndex; i++) {\n                        let insert;\n                        let s = strings[i];\n                        if (s === '') {\n                            insert = createMarker();\n                        }\n                        else {\n                            const match = lastAttributeNameRegex.exec(s);\n                            if (match !== null && endsWith(match[2], boundAttributeSuffix)) {\n                                s = s.slice(0, match.index) + match[1] +\n                                    match[2].slice(0, -boundAttributeSuffix.length) + match[3];\n                            }\n                            insert = document.createTextNode(s);\n                        }\n                        parent.insertBefore(insert, node);\n                        this.parts.push({ type: 'node', index: ++index });\n                    }\n                    // If there's no text, we must insert a comment to mark our place.\n                    // Else, we can trust it will stick around after cloning.\n                    if (strings[lastIndex] === '') {\n                        parent.insertBefore(createMarker(), node);\n                        nodesToRemove.push(node);\n                    }\n                    else {\n                        node.data = strings[lastIndex];\n                    }\n                    // We have a part for each match found\n                    partIndex += lastIndex;\n                }\n            }\n            else if (node.nodeType === 8 /* Node.COMMENT_NODE */) {\n                if (node.data === marker) {\n                    const parent = node.parentNode;\n                    // Add a new marker node to be the startNode of the Part if any of\n                    // the following are true:\n                    //  * We don't have a previousSibling\n                    //  * The previousSibling is already the start of a previous part\n                    if (node.previousSibling === null || index === lastPartIndex) {\n                        index++;\n                        parent.insertBefore(createMarker(), node);\n                    }\n                    lastPartIndex = index;\n                    this.parts.push({ type: 'node', index });\n                    // If we don't have a nextSibling, keep this node so we have an end.\n                    // Else, we can remove it to save future costs.\n                    if (node.nextSibling === null) {\n                        node.data = '';\n                    }\n                    else {\n                        nodesToRemove.push(node);\n                        index--;\n                    }\n                    partIndex++;\n                }\n                else {\n                    let i = -1;\n                    while ((i = node.data.indexOf(marker, i + 1)) !== -1) {\n                        // Comment node has a binding marker inside, make an inactive part\n                        // The binding won't work, but subsequent bindings will\n                        // TODO (justinfagnani): consider whether it's even worth it to\n                        // make bindings in comments work\n                        this.parts.push({ type: 'node', index: -1 });\n                        partIndex++;\n                    }\n                }\n            }\n        }\n        // Remove text binding nodes after the walk to not disturb the TreeWalker\n        for (const n of nodesToRemove) {\n            n.parentNode.removeChild(n);\n        }\n    }\n}\nconst endsWith = (str, suffix) => {\n    const index = str.length - suffix.length;\n    return index >= 0 && str.slice(index) === suffix;\n};\nexport const isTemplatePartActive = (part) => part.index !== -1;\n// Allows `document.createComment('')` to be renamed for a\n// small manual size-savings.\nexport const createMarker = () => document.createComment('');\n/**\n * This regex extracts the attribute name preceding an attribute-position\n * expression. It does this by matching the syntax allowed for attributes\n * against the string literal directly preceding the expression, assuming that\n * the expression is in an attribute-value position.\n *\n * See attributes in the HTML spec:\n * https://www.w3.org/TR/html5/syntax.html#elements-attributes\n *\n * \" \\x09\\x0a\\x0c\\x0d\" are HTML space characters:\n * https://www.w3.org/TR/html5/infrastructure.html#space-characters\n *\n * \"\\0-\\x1F\\x7F-\\x9F\" are Unicode control characters, which includes every\n * space character except \" \".\n *\n * So an attribute is:\n *  * The name: any character except a control character, space character, ('),\n *    (\"), \">\", \"=\", or \"/\"\n *  * Followed by zero or more space characters\n *  * Followed by \"=\"\n *  * Followed by zero or more space characters\n *  * Followed by:\n *    * Any character except space, ('), (\"), \"<\", \">\", \"=\", (`), or\n *    * (\") then any non-(\"), or\n *    * (') then any non-(')\n */\nexport const lastAttributeNameRegex = \n// eslint-disable-next-line no-control-regex\n/([ \\x09\\x0a\\x0c\\x0d])([^\\0-\\x1F\\x7F-\\x9F \"'>=/]+)([ \\x09\\x0a\\x0c\\x0d]*=[ \\x09\\x0a\\x0c\\x0d]*(?:[^ \\x09\\x0a\\x0c\\x0d\"'`<>=]*|\"[^\"]*|'[^']*))$/;\n//# sourceMappingURL=template.js.map","/**\n * @license\n * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at\n * http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at\n * http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at\n * http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at\n * http://polymer.github.io/PATENTS.txt\n */\n/**\n *\n * Main lit-html module.\n *\n * Main exports:\n *\n * -  [[html]]\n * -  [[svg]]\n * -  [[render]]\n *\n * @packageDocumentation\n */\n/**\n * Do not remove this comment; it keeps typedoc from misplacing the module\n * docs.\n */\nimport { defaultTemplateProcessor } from './lib/default-template-processor.js';\nimport { SVGTemplateResult, TemplateResult } from './lib/template-result.js';\nexport { DefaultTemplateProcessor, defaultTemplateProcessor } from './lib/default-template-processor.js';\nexport { directive, isDirective } from './lib/directive.js';\n// TODO(justinfagnani): remove line when we get NodePart moving methods\nexport { removeNodes, reparentNodes } from './lib/dom.js';\nexport { noChange, nothing } from './lib/part.js';\nexport { AttributeCommitter, AttributePart, BooleanAttributePart, EventPart, isIterable, isPrimitive, NodePart, PropertyCommitter, PropertyPart } from './lib/parts.js';\nexport { parts, render } from './lib/render.js';\nexport { templateCaches, templateFactory } from './lib/template-factory.js';\nexport { TemplateInstance } from './lib/template-instance.js';\nexport { SVGTemplateResult, TemplateResult } from './lib/template-result.js';\nexport { createMarker, isTemplatePartActive, Template } from './lib/template.js';\n// IMPORTANT: do not change the property name or the assignment expression.\n// This line will be used in regexes to search for lit-html usage.\n// TODO(justinfagnani): inject version number at build time\nif (typeof window !== 'undefined') {\n    (window['litHtmlVersions'] || (window['litHtmlVersions'] = [])).push('1.3.0');\n}\n/**\n * Interprets a template literal as an HTML template that can efficiently\n * render to and update a container.\n */\nexport const html = (strings, ...values) => new TemplateResult(strings, values, 'html', defaultTemplateProcessor);\n/**\n * Interprets a template literal as an SVG template that can efficiently\n * render to and update a container.\n */\nexport const svg = (strings, ...values) => new SVGTemplateResult(strings, values, 'svg', defaultTemplateProcessor);\n//# sourceMappingURL=lit-html.js.map","import 'elements-sk/styles/buttons';\n\nimport { $$ } from 'common-sk/modules/dom';\n\nimport './index';\nimport { ConfirmDialogSk } from './confirm-dialog-sk';\n\n$$('#ask')!.addEventListener('click', (e) => {\n  $$<ConfirmDialogSk>('#dialog')!.open('Do something dangerous?').then(() => {\n    $$('#results')!.textContent = 'Confirmed!';\n  }).catch(() => {\n    $$('#results')!.textContent = 'Cancelled!';\n  });\n});\n","// extracted by mini-css-extract-plugin","/**\n * @module infra-sk/modules/confirm-dialog-sk\n * @description <h2><code>confirm-dialog-sk</code></h2>\n *\n * <p>\n * This element pops up a dialog with OK and Cancel buttons. Its open method returns a Promise\n * which will resolve when the user clicks OK or reject when the user clicks Cancel.\n * </p>\n *\n * @example\n *\n * <confirm-dialog-sk id=\"confirm_dialog\"></confirm-dialog-sk>\n *\n * <script>\n *   (function(){\n *     $$('#confirm-dialog').open(\"Proceed with taking over the world?\").then(() => {\n *       // Do some thing on confirm.\n *     }).catch(() => {\n *       // Do some thing on cancel.\n *     });\n *   })();\n * </script>\n *\n */\nimport { define } from 'elements-sk/define';\nimport dialogPolyfill from 'dialog-polyfill';\nimport { html, render } from 'lit-html';\n\nimport 'elements-sk/styles/buttons';\n\nexport class ConfirmDialogSk extends HTMLElement {\n  private static template = (ele: ConfirmDialogSk) => html`\n    <dialog @cancel=${ele.dismiss}>\n      <h2>Confirm</h2>\n      <div class=message>${ele.message}</div>\n      <div class=buttons>\n      <button class=dismiss @click=${ele.dismiss}>Cancel</button>\n      <button class=confirm @click=${ele.confirm}>OK</button>\n      </div>\n    </dialog>\n  `;\n\n  private message = '';\n\n  private dialog: HTMLDialogElement | null = null;\n\n  private resolve: ((value?: any)=> void) | null = null;\n\n  private reject: ((reason?: any)=> void) | null = null;\n\n  connectedCallback(): void {\n    this.render();\n    this.dialog = this.querySelector('dialog');\n    dialogPolyfill.registerDialog(this.dialog!);\n  }\n\n  /**\n   * Display the dialog.\n   *\n   * @param message Message to display. Text only, any markup will be escaped.\n   * @returns Returns a Promise that resolves on OK, and rejects on Cancel.\n   */\n  open(message: string): Promise<void> {\n    this.message = message;\n    this.render();\n    this.dialog!.showModal();\n    return new Promise((resolve, reject) => {\n      this.resolve = resolve;\n      this.reject = reject;\n    });\n  }\n\n  private dismiss() {\n    this.dialog!.close();\n    this.reject!();\n  }\n\n  private confirm() {\n    this.dialog!.close();\n    this.resolve!();\n  }\n\n  private render() {\n    render(ConfirmDialogSk.template(this), this, { eventContext: this });\n  }\n}\n\ndefine('confirm-dialog-sk', ConfirmDialogSk);\n","import './confirm-dialog-sk.scss';\nimport './confirm-dialog-sk';\n"],"sourceRoot":""}