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A simple base class for creating fast, lightweight web components
There is a newer version: 4.1.1
!function(i){"function"==typeof define&&define.amd?define(i):i()}((function(){"use strict";
/**
     * @license
     * Copyright 2017 Google LLC
     * SPDX-License-Identifier: BSD-3-Clause
     */var i,n,o="__scoped";null!==(i=globalThis.reactiveElementPolyfillSupport)&&void 0!==i||(globalThis.reactiveElementPolyfillSupport=function(i){var n=i.ReactiveElement;if(void 0!==window.ShadyCSS&&(!window.ShadyCSS.nativeShadow||window.ShadyCSS.ApplyShim)){var t=n.prototype;window.ShadyDOM&&window.ShadyDOM.inUse&&!0===window.ShadyDOM.noPatch&&window.ShadyDOM.patchElementProto(t);var d=t.createRenderRoot;t.createRenderRoot=function(){var i,n,t,w=this.localName;if(window.ShadyCSS.nativeShadow)return d.call(this);if(!this.constructor.hasOwnProperty(o)){this.constructor[o]=!0;var v=this.constructor.elementStyles.map((function(i){return i instanceof CSSStyleSheet?Array.from(i.cssRules).reduce((function(i,n){return i+n.cssText}),""):i.cssText}));null===(n=null===(i=window.ShadyCSS)||void 0===i?void 0:i.ScopingShim)||void 0===n||n.prepareAdoptedCssText(v,w),void 0===this.constructor._$AJ&&window.ShadyCSS.prepareTemplateStyles(document.createElement("template"),w)}return null!==(t=this.shadowRoot)&&void 0!==t?t:this.attachShadow(this.constructor.shadowRootOptions)};var w=t.connectedCallback;t.connectedCallback=function(){w.call(this),this.hasUpdated&&window.ShadyCSS.styleElement(this)};var v=t._$AE;t._$AE=function(i){this.hasUpdated||window.ShadyCSS.styleElement(this),v.call(this,i)}}});var t,d=new Set,w=new Map;null!==(n=globalThis.litHtmlPolyfillSupport)&&void 0!==n||(globalThis.litHtmlPolyfillSupport=function(i,n){if(void 0!==window.ShadyCSS&&(!window.ShadyCSS.nativeShadow||window.ShadyCSS.ApplyShim)){var o=function(i){return void 0!==i&&!d.has(i)},t=function(i){var n=w.get(i);return void 0===n&&w.set(i,n=[]),n},v=new Map,l=i.createElement;i.createElement=function(n,d){var w=l.call(i,n,d),v=null==d?void 0:d.scope;if(void 0!==v&&(window.ShadyCSS.nativeShadow||window.ShadyCSS.prepareTemplateDom(w,v),o(v))){var r=t(v),u=w.content.querySelectorAll("style");r.push.apply(r,Array.from(u).map((function(i){var n;return null===(n=i.parentNode)||void 0===n||n.removeChild(i),i.textContent})))}return w};var r=document.createDocumentFragment(),u=document.createComment(""),s=n.prototype,e=s._$AI;s._$AI=function(i,n){var v,l;void 0===n&&(n=this);var s=this._$AA.parentNode,a=null===(v=this.options)||void 0===v?void 0:v.scope;if(s instanceof ShadowRoot&&o(a)){var h=this._$AA,f=this._$AB;r.appendChild(u),this._$AA=u,this._$AB=null,e.call(this,i,n);var c=(null==i?void 0:i._$litType$)?this._$AH._$AD.el:document.createElement("template");if(function(i,n){var o,v=t(i),l=0!==v.length;l&&((o=document.createElement("style")).textContent=v.join("\n"),n.content.appendChild(o)),d.add(i),w.delete(i),window.ShadyCSS.prepareTemplateStyles(n,i),l&&window.ShadyCSS.nativeShadow&&null!==(o=n.content.querySelector("style"))&&n.content.appendChild(o)}(a,c),r.removeChild(u),null===(l=window.ShadyCSS)||void 0===l?void 0:l.nativeShadow){var y=c.content.querySelector("style");null!==y&&r.appendChild(y.cloneNode(!0))}s.insertBefore(r,f),this._$AA=h,this._$AB=f}else e.call(this,i,n)},s._$AC=function(n){var o,t=null===(o=this.options)||void 0===o?void 0:o.scope,d=v.get(t);void 0===d&&v.set(t,d=new Map);var w=d.get(n.strings);return void 0===w&&d.set(n.strings,w=new i(n,this.options)),w}}}),null!==(t=globalThis.litElementPolyfillSupport)&&void 0!==t||(globalThis.litElementPolyfillSupport=function(i){var n=i.LitElement;if(void 0!==window.ShadyCSS&&(!window.ShadyCSS.nativeShadow||window.ShadyCSS.ApplyShim)){n._$AJ=!0;var o=n.prototype,t=o.createRenderRoot;o.createRenderRoot=function(){return this.renderOptions.scope=this.localName,t.call(this)}}})}));
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