diff --git a/.gitignore b/.gitignore
index 7c38c16..7f7160e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,5 @@ my-element.js
my-element.js.map
my-element.d.ts
my-element.d.ts.map
+# only generated for size check
+my-element.bundled.js
\ No newline at end of file
diff --git a/README.md b/README.md
index 68fb58f..9c80299 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,7 @@ Both the TypeScript compiler and lit-analyzer are configured to be very strict.
## Testing
This sample uses modern-web.dev's
-[@web/test-runner](https://www.npmjs.com/package/@web/test-runner) along with
-Mocha, Chai, and some related helpers for testing. See the
+[@web/test-runner](https://www.npmjs.com/package/@web/test-runner) for testing. See the
[modern-web.dev testing documentation](https://modern-web.dev/docs/test-runner/overview) for
more information.
diff --git a/docs/install/index.html b/docs/install/index.html
index 41e6a4d..05ad115 100644
--- a/docs/install/index.html
+++ b/docs/install/index.html
@@ -34,7 +34,7 @@
npm i my-elementCDN
npm CDNs like unpkg.com can directly serve files that have been published to npm. This works great for standard JavaScript modules that the browser can load natively.
-For this element to work from unpkg.com specifically, you need to include the ?module query parameter, which tells unpkg.com to rewrite "bare" module specificers to full URLs.
+For this element to work from unpkg.com specifically, you need to include the ?module query parameter, which tells unpkg.com to rewrite "bare" module specifiers to full URLs.
HTML
< scripttype = " module" src = " https://unpkg.com/my-element?module" > </ script> JavaScript
diff --git a/docs/my-element.bundled.js b/docs/my-element.bundled.js
deleted file mode 100644
index 64a9d72..0000000
--- a/docs/my-element.bundled.js
+++ /dev/null
@@ -1,52 +0,0 @@
-/**
- * @license
- * Copyright 2019 Google LLC
- * SPDX-License-Identifier: BSD-3-Clause
- */
-const t=window.ShadowRoot&&(void 0===window.ShadyCSS||window.ShadyCSS.nativeShadow)&&"adoptedStyleSheets"in Document.prototype&&"replace"in CSSStyleSheet.prototype,i=Symbol(),s=new Map;class e{constructor(t,s){if(this._$cssResult$=!0,s!==i)throw Error("CSSResult is not constructable. Use `unsafeCSS` or `css` instead.");this.cssText=t}get styleSheet(){let i=s.get(this.cssText);return t&&void 0===i&&(s.set(this.cssText,i=new CSSStyleSheet),i.replaceSync(this.cssText)),i}toString(){return this.cssText}}const n=t?t=>t:t=>t instanceof CSSStyleSheet?(t=>{let s="";for(const i of t.cssRules)s+=i.cssText;return(t=>new e("string"==typeof t?t:t+"",i))(s)})(t):t
-/**
- * @license
- * Copyright 2017 Google LLC
- * SPDX-License-Identifier: BSD-3-Clause
- */;var o,h;const l={toAttribute(t,i){switch(i){case Boolean:t=t?"":null;break;case Object:case Array:t=null==t?t:JSON.stringify(t)}return t},fromAttribute(t,i){let s=t;switch(i){case Boolean:s=null!==t;break;case Number:s=null===t?null:Number(t);break;case Object:case Array:try{s=JSON.parse(t)}catch(t){s=null}}return s}},r=(t,i)=>i!==t&&(i==i||t==t),u={attribute:!0,type:String,converter:l,reflect:!1,hasChanged:r};class d extends HTMLElement{constructor(){super(),this._$Et=new Map,this.isUpdatePending=!1,this.hasUpdated=!1,this._$Ei=null,this.o()}static addInitializer(t){var i;null!==(i=this.l)&&void 0!==i||(this.l=[]),this.l.push(t)}static get observedAttributes(){this.finalize();const t=[];return this.elementProperties.forEach(((i,s)=>{const e=this._$Eh(s,i);void 0!==e&&(this._$Eu.set(e,s),t.push(e))})),t}static createProperty(t,i=u){if(i.state&&(i.attribute=!1),this.finalize(),this.elementProperties.set(t,i),!i.noAccessor&&!this.prototype.hasOwnProperty(t)){const s="symbol"==typeof t?Symbol():"__"+t,e=this.getPropertyDescriptor(t,s,i);void 0!==e&&Object.defineProperty(this.prototype,t,e)}}static getPropertyDescriptor(t,i,s){return{get(){return this[i]},set(e){const n=this[t];this[i]=e,this.requestUpdate(t,n,s)},configurable:!0,enumerable:!0}}static getPropertyOptions(t){return this.elementProperties.get(t)||u}static finalize(){if(this.hasOwnProperty("finalized"))return!1;this.finalized=!0;const t=Object.getPrototypeOf(this);if(t.finalize(),this.elementProperties=new Map(t.elementProperties),this._$Eu=new Map,this.hasOwnProperty("properties")){const t=this.properties,i=[...Object.getOwnPropertyNames(t),...Object.getOwnPropertySymbols(t)];for(const s of i)this.createProperty(s,t[s])}return this.elementStyles=this.finalizeStyles(this.styles),!0}static finalizeStyles(t){const i=[];if(Array.isArray(t)){const s=new Set(t.flat(1/0).reverse());for(const t of s)i.unshift(n(t))}else void 0!==t&&i.push(n(t));return i}static _$Eh(t,i){const s=i.attribute;return!1===s?void 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s=document.createElement("style");s.textContent=t.cssText,i.appendChild(s)}))})(s,this.constructor.elementStyles),s}connectedCallback(){var t;void 0===this.renderRoot&&(this.renderRoot=this.createRenderRoot()),this.enableUpdating(!0),null===(t=this._$Em)||void 0===t||t.forEach((t=>{var i;return null===(i=t.hostConnected)||void 0===i?void 0:i.call(t)}))}enableUpdating(t){}disconnectedCallback(){var t;null===(t=this._$Em)||void 0===t||t.forEach((t=>{var i;return null===(i=t.hostDisconnected)||void 0===i?void 0:i.call(t)}))}attributeChangedCallback(t,i,s){this._$AK(t,s)}_$Eg(t,i,s=u){var e,n;const o=this.constructor._$Eh(t,s);if(void 0!==o&&!0===s.reflect){const h=(null!==(n=null===(e=s.converter)||void 0===e?void 0:e.toAttribute)&&void 0!==n?n:l.toAttribute)(i,s.type);this._$Ei=t,null==h?this.removeAttribute(o):this.setAttribute(o,h),this._$Ei=null}}_$AK(t,i){var s,e,n;const o=this.constructor,h=o._$Eu.get(t);if(void 0!==h&&this._$Ei!==h){const 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0===t||t.forEach((t=>{var i;return null===(i=t.hostUpdate)||void 0===i?void 0:i.call(t)})),this.update(s)):this._$ET()}catch(t){throw i=!1,this._$ET(),t}i&&this._$AE(s)}willUpdate(t){}_$AE(t){var i;null===(i=this._$Em)||void 0===i||i.forEach((t=>{var i;return null===(i=t.hostUpdated)||void 0===i?void 0:i.call(t)})),this.hasUpdated||(this.hasUpdated=!0,this.firstUpdated(t)),this.updated(t)}_$ET(){this._$AL=new Map,this.isUpdatePending=!1}get updateComplete(){return this.getUpdateComplete()}getUpdateComplete(){return this._$Ep}shouldUpdate(t){return!0}update(t){void 0!==this._$ES&&(this._$ES.forEach(((t,i)=>this._$Eg(i,this[i],t))),this._$ES=void 0),this._$ET()}updated(t){}firstUpdated(t){}}
-/**
- * @license
- * Copyright 2017 Google LLC
- * SPDX-License-Identifier: BSD-3-Clause
- */
-var a,c;d.finalized=!0,d.elementProperties=new Map,d.elementStyles=[],d.shadowRootOptions={mode:"open"},null===(o=globalThis.reactiveElementPlatformSupport)||void 0===o||o.call(globalThis,{ReactiveElement:d}),(null!==(h=globalThis.reactiveElementVersions)&&void 0!==h?h:globalThis.reactiveElementVersions=[]).push("1.0.0-rc.3");const v=globalThis.trustedTypes,f=v?v.createPolicy("lit-html",{createHTML:t=>t}):void 0,p=`lit$${(Math.random()+"").slice(9)}$`,g="?"+p,b=`<${g}>`,y=document,m=(t="")=>y.createComment(t),w=t=>null===t||"object"!=typeof t&&"function"!=typeof t,$=Array.isArray,S=/<(?:(!--|\/[^a-zA-Z])|(\/?[a-zA-Z][^>\s]*)|(\/?$))/g,C=/-->/g,A=/>/g,_=/>|[ \n \r](?:([^\s"'>=/]+)([ \n \r]*=[ \n \r]*(?:[^ \n \r"'`<>=]|("|')|))|$)/g,T=/'/g,k=/"/g,x=/^(?:script|style|textarea)$/i,E=(t=>(i,...s)=>({_$litType$:t,strings:i,values:s}))(1),U=Symbol.for("lit-noChange"),M=Symbol.for("lit-nothing"),O=new WeakMap,N=y.createTreeWalker(y,129,null,!1),j=(t,i)=>{const s=t.length-1,e=[];let n,o=2===i?"":"",h=S;for(let i=0;i"===r[0]?(h=null!=n?n:S,u=-1):void 0===r[1]?u=-2:(u=h.lastIndex-r[2].length,l=r[1],h=void 0===r[3]?_:'"'===r[3]?k:T):h===k||h===T?h=_:h===C||h===A?h=S:(h=_,n=void 0);const a=h===_&&t[i+1].startsWith("/>")?" ":"";o+=h===S?s+b:u>=0?(e.push(l),s.slice(0,u)+"$lit$"+s.slice(u)+p+a):s+p+(-2===u?(e.push(void 0),i):a)}const l=o+(t[s]||"")+(2===i?" ":"");return[void 0!==f?f.createHTML(l):l,e]};class R{constructor({strings:t,_$litType$:i},s){let e;this.parts=[];let n=0,o=0;const h=t.length-1,l=this.parts,[r,u]=j(t,i);if(this.el=R.createElement(r,s),N.currentNode=this.el.content,2===i){const t=this.el.content,i=t.firstChild;i.remove(),t.append(...i.childNodes)}for(;null!==(e=N.nextNode())&&l.length0){e.textContent=v?v.emptyScript:"";for(let s=0;s{var i;return $(t)||"function"==typeof(null===(i=t)||void 0===i?void 0:i[Symbol.iterator])})(t)?this.S(t):this.$(t)}A(t,i=this._$AB){return this._$AA.parentNode.insertBefore(t,i)}M(t){this._$AH!==t&&(this._$AR(),this._$AH=this.A(t))}$(t){this._$AH!==M&&w(this._$AH)?this._$AA.nextSibling.data=t:this.M(y.createTextNode(t)),this._$AH=t}T(t){var i;const{values:s,_$litType$:e}=t,n="number"==typeof e?this._$AC(t):(void 0===e.el&&(e.el=R.createElement(e.h,this.options)),e);if((null===(i=this._$AH)||void 0===i?void 0:i._$AD)===n)this._$AH.m(s);else{const t=new I(n,this),i=t.p(this.options);t.m(s),this.M(i),this._$AH=t}}_$AC(t){let i=O.get(t.strings);return void 0===i&&O.set(t.strings,i=new R(t)),i}S(t){$(this._$AH)||(this._$AH=[],this._$AR());const i=this._$AH;let s,e=0;for(const n of t)e===i.length?i.push(s=new P(this.A(m()),this.A(m()),this,this.options)):s=i[e],s._$AI(n),e++;e2||""!==s[0]||""!==s[1]?(this._$AH=Array(s.length-1).fill(M),this.strings=s):this._$AH=M}get tagName(){return this.element.tagName}get _$AU(){return this._$AM._$AU}_$AI(t,i=this,s,e){const n=this.strings;let o=!1;if(void 0===n)t=z(this,t,i,0),o=!w(t)||t!==this._$AH&&t!==U,o&&(this._$AH=t);else{const e=t;let h,l;for(t=n[0],h=0;h{var e,n;const o=null!==(e=null==s?void 0:s.renderBefore)&&void 0!==e?e:i;let h=o._$litPart$;if(void 0===h){const t=null!==(n=null==s?void 0:s.renderBefore)&&void 0!==n?n:null;o._$litPart$=h=new P(i.insertBefore(m(),t),t,void 0,null!=s?s:{})}return h._$AI(t),h})(i,this.renderRoot,this.renderOptions)}connectedCallback(){var t;super.connectedCallback(),null===(t=this._$Dt)||void 0===t||t.setConnected(!0)}disconnectedCallback(){var t;super.disconnectedCallback(),null===(t=this._$Dt)||void 0===t||t.setConnected(!1)}render(){return U}}q.finalized=!0,q._$litElement$=!0,null===(K=globalThis.litElementHydrateSupport)||void 0===K||K.call(globalThis,{LitElement:q}),null===(W=globalThis.litElementPlatformSupport)||void 0===W||W.call(globalThis,{LitElement:q}),(null!==(Z=globalThis.litElementVersions)&&void 0!==Z?Z:globalThis.litElementVersions=[]).push("3.0.0-rc.3");
-/**
- * @license
- * Copyright 2017 Google LLC
- * SPDX-License-Identifier: BSD-3-Clause
- */
-const V=(t,i)=>"method"===i.kind&&i.descriptor&&!("value"in i.descriptor)?{...i,finisher(s){s.createProperty(i.key,t)}}:{kind:"field",key:Symbol(),placement:"own",descriptor:{},originalKey:i.key,initializer(){"function"==typeof i.initializer&&(this[i.key]=i.initializer.call(this))},finisher(s){s.createProperty(i.key,t)}};
-/**
- * @license
- * Copyright 2017 Google LLC
- * SPDX-License-Identifier: BSD-3-Clause
- */function F(t){return(i,s)=>void 0!==s?((t,i,s)=>{i.constructor.createProperty(s,t)})(t,i,s):V(t,i)
-/**
- * @license
- * Copyright 2019 Google LLC
- * SPDX-License-Identifier: BSD-3-Clause
- */}var G=function(t,i,s,e){for(var n,o=arguments.length,h=o<3?i:null===e?e=Object.getOwnPropertyDescriptor(i,s):e,l=t.length-1;l>=0;l--)(n=t[l])&&(h=(o<3?n(h):o>3?n(i,s,h):n(i,s))||h);return o>3&&h&&Object.defineProperty(i,s,h),h};let Q=class extends q{constructor(){super(...arguments),this.name="World",this.count=0}render(){return E`
- ${this.sayHello(this.name)}!
-
- Click Count: ${this.count}
-
-