@microsoft/fast-element - npm Package Compare versions

Comparing version 1.6.2 to 1.7.0

CHANGELOG.json

@@ -5,6 +5,111 @@ {
     {
-      "date": "Sun, 31 Oct 2021 07:14:05 GMT",
+      "date": "Sun, 23 Jan 2022 07:11:35 GMT",
+      "tag": "@microsoft/fast-element_v1.7.0",
+      "version": "1.7.0",
+      "comments": {
+        "minor": [
+          {
+            "comment": "add recyle option to repeat directive",
+            "author": "[e-mail]",
+            "commit": "897c39862b58a63ad9900426ae6ae2f95d222e1e",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Wed, 12 Jan 2022 07:11:42 GMT",
       "tag": "@microsoft/fast-element_v1.6.2",
       "version": "1.6.2",
       "comments": {
+        "none": [
+          {
+            "comment": "add links back to cheat sheet",
+            "author": "[e-mail]",
+            "commit": "962ca2a330f8c277ac489613f0ff55cac08896e8",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Tue, 11 Jan 2022 07:09:27 GMT",
+      "tag": "@microsoft/fast-element_v1.6.2",
+      "version": "1.6.2",
+      "comments": {
+        "none": [
+          {
+            "comment": "update rollup-plugin-filesize from 8.0.2 to 9.1.2",
+            "author": "[e-mail]",
+            "commit": "af847f2749ff605cced426e55a1580ea85c89cb0",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Sun, 19 Dec 2021 07:12:39 GMT",
+      "tag": "@microsoft/fast-element_v1.6.2",
+      "version": "1.6.2",
+      "comments": {
+        "none": [
+          {
+            "comment": "minor fixes",
+            "author": "[e-mail]",
+            "commit": "5056e83234e1c758375fa4882943d104fb476ca2",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Tue, 14 Dec 2021 07:12:12 GMT",
+      "tag": "@microsoft/fast-element_v1.6.2",
+      "version": "1.6.2",
+      "comments": {
+        "none": [
+          {
+            "comment": "docs(using-directives): clarify slotted directive practices",
+            "author": "[e-mail]",
+            "commit": "babdb99e832319eaee76465765f9e6b72911d473",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Wed, 08 Dec 2021 07:10:04 GMT",
+      "tag": "@microsoft/fast-element_v1.6.2",
+      "version": "1.6.2",
+      "comments": {
+        "none": [
+          {
+            "comment": "docs: add .NET acknowledgement",
+            "author": "[e-mail]",
+            "commit": "bd7d84152a823cc21aab0dfa196da9d663ad0778",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Thu, 02 Dec 2021 07:11:13 GMT",
+      "tag": "@microsoft/fast-element_v1.6.2",
+      "version": "1.6.2",
+      "comments": {
+        "none": [
+          {
+            "comment": "docs: corrections to cdn links",
+            "author": "[e-mail]",
+            "commit": "2ec536794820959f771ebbfe25efd5a4489e7a76",
+            "package": "@microsoft/fast-element"
+          }
+        ]
+      }
+    },
+    {
+      "date": "Sun, 31 Oct 2021 07:17:45 GMT",
+      "tag": "@microsoft/fast-element_v1.6.2",
+      "version": "1.6.2",
+      "comments": {
         "patch": [
@@ -11,0 +116,0 @@ {

CHANGELOG.md

 # Change Log - @microsoft/fast-element
 
-This log was last generated on Sun, 31 Oct 2021 07:14:05 GMT and should not be manually modified.
+This log was last generated on Sun, 23 Jan 2022 07:11:35 GMT and should not be manually modified.
 
 <!-- Start content -->
 
+## 1.7.0
+
+Sun, 23 Jan 2022 07:11:35 GMT
+
+### Minor changes
+
+- add recyle option to repeat directive ([e-mail])
+
 ## 1.6.2
 
-Sun, 31 Oct 2021 07:14:05 GMT
+Sun, 31 Oct 2021 07:17:45 GMT
 
@@ -11,0 +19,0 @@ ### Patches

dist/dts/templating/repeat.d.ts

@@ -15,3 +15,7 @@ import { Binding, ExecutionContext } from "../observation/observable";
      */
-    positioning: boolean;
+    positioning?: boolean;
+    /**
+     * Enables view recycling
+     */
+    recycle?: boolean;
 }
@@ -18,0 +22,0 @@ /**

dist/esm/templating/repeat.js

@@ -9,2 +9,3 @@ import { DOM } from "../dom";
     positioning: false,
+    recycle: true,
 });
@@ -133,3 +134,5 @@ function bindWithoutPositioning(view, items, index, context) {
                 const location = neighbor ? neighbor.firstChild : this.location;
-                const view = totalRemoved.length > 0 ? totalRemoved.shift() : template.create();
+                const view = this.options.recycle && totalRemoved.length > 0
+                    ? totalRemoved.shift()
+                    : template.create();
                 views.splice(addIndex, 0, view);
@@ -136,0 +139,0 @@ bindView(view, items, addIndex, childContext);

dist/fast-element.min.js

@@ -1,1 +0,1 @@
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WeakSet,this.behaviors=null}addStylesTo(t){this.targets.add(t)}removeStylesFrom(t){this.targets.delete(t)}isAttachedTo(t){return this.targets.has(t)}withBehaviors(...t){return this.behaviors=null===this.behaviors?t:this.behaviors.concat(t),this}}function ct(t){return t.map(t=>t instanceof at?ct(t.styles):[t]).reduce((t,e)=>t.concat(e),[])}function dt(t){return t.map(t=>t instanceof at?t.behaviors:null).reduce((t,e)=>null===e?t:(null===t&&(t=[]),t.concat(e)),null)}at.create=(()=>{if(d.supportsAdoptedStyleSheets){const t=new Map;return e=>new ut(e,t)}return t=>new pt(t)})();class ut extends at{constructor(t,e){super(),this.styles=t,this.styleSheetCache=e,this._styleSheets=void 0,this.behaviors=dt(t)}get styleSheets(){if(void 0===this._styleSheets){const t=this.styles,e=this.styleSheetCache;this._styleSheets=ct(t).map(t=>{if(t instanceof CSSStyleSheet)return t;let s=e.get(t);return void 0===s&&(s=new CSSStyleSheet,s.replaceSync(t),e.set(t,s)),s})}return this._styleSheets}addStylesTo(t){t.adoptedStyleSheets=[...t.adoptedStyleSheets,...this.styleSheets],super.addStylesTo(t)}removeStylesFrom(t){const e=this.styleSheets;t.adoptedStyleSheets=t.adoptedStyleSheets.filter(t=>-1===e.indexOf(t)),super.removeStylesFrom(t)}}let ft=0;class pt extends at{constructor(t){super(),this.styles=t,this.behaviors=null,this.behaviors=dt(t),this.styleSheets=ct(t),this.styleClass="fast-style-class-"+ ++ft}addStylesTo(t){const e=this.styleSheets,s=this.styleClass;t=this.normalizeTarget(t);for(let i=0;i<e.length;i++){const n=document.createElement("style");n.innerHTML=e[i],n.className=s,t.append(n)}super.addStylesTo(t)}removeStylesFrom(t){const e=(t=this.normalizeTarget(t)).querySelectorAll("."+this.styleClass);for(let s=0,i=e.length;s<i;++s)t.removeChild(e[s]);super.removeStylesFrom(t)}isAttachedTo(t){return super.isAttachedTo(this.normalizeTarget(t))}normalizeTarget(t){return t===document?document.body:t}}const gt={toView:t=>t?"true":"false",fromView:t=>null!=t&&"false"!==t&&!1!==t&&0!==t},bt={toView(t){if(null==t)return null;const e=1*t;return isNaN(e)?null:e.toString()},fromView(t){if(null==t)return null;const e=1*t;return isNaN(e)?null:e}};class vt{constructor(t,e,s=e.toLowerCase(),i="reflect",n){this.guards=new Set,this.Owner=t,this.name=e,this.attribute=s,this.mode=i,this.converter=n,this.fieldName="_"+e,this.callbackName=e+"Changed",this.hasCallback=this.callbackName in t.prototype,"boolean"===i&&void 0===n&&(this.converter=gt)}setValue(t,e){const s=t[this.fieldName],i=this.converter;void 0!==i&&(e=i.fromView(e)),s!==e&&(t[this.fieldName]=e,this.tryReflectToAttribute(t),this.hasCallback&&t[this.callbackName](s,e),t.$fastController.notify(this.name))}getValue(t){return B.track(t,this.name),t[this.fieldName]}onAttributeChangedCallback(t,e){this.guards.has(t)||(this.guards.add(t),this.setValue(t,e),this.guards.delete(t))}tryReflectToAttribute(t){const e=this.mode,s=this.guards;s.has(t)||"fromView"===e||d.queueUpdate(()=>{s.add(t);const i=t[this.fieldName];switch(e){case"reflect":const e=this.converter;d.setAttribute(t,this.attribute,void 0!==e?e.toView(i):i);break;case"boolean":d.setBooleanAttribute(t,this.attribute,i)}s.delete(t)})}static collect(t,...e){const s=[];e.push(t.attributes);for(let i=0,n=e.length;i<n;++i){const n=e[i];if(void 0!==n)for(let e=0,i=n.length;e<i;++e){const i=n[e];"string"==typeof i?s.push(new vt(t,i)):s.push(new vt(t,i.property,i.attribute,i.mode,i.converter))}}return s}}function mt(t,e){let s;function i(t,e){arguments.length>1&&(s.property=e);const i=t.constructor.attributes||(t.constructor.attributes=[]);i.push(s)}return arguments.length>1?(s={},void i(t,e)):(s=void 0===t?{}:t,i)}const yt={mode:"open"},Ct={},xt=new Map;class wt{constructor(t,e=t.definition){"string"==typeof e&&(e={name:e}),this.type=t,this.name=e.name,this.template=e.template;const s=vt.collect(t,e.attributes),i=new Array(s.length),n={},r={};for(let t=0,e=s.length;t<e;++t){const e=s[t];i[t]=e.attribute,n[e.name]=e,r[e.attribute]=e}this.attributes=s,this.observedAttributes=i,this.propertyLookup=n,this.attributeLookup=r,this.shadowOptions=void 0===e.shadowOptions?yt:null===e.shadowOptions?void 0:Object.assign(Object.assign({},yt),e.shadowOptions),this.elementOptions=void 0===e.elementOptions?Ct:Object.assign(Object.assign({},Ct),e.elementOptions),this.styles=void 0===e.styles?void 0:Array.isArray(e.styles)?at.create(e.styles):e.styles instanceof at?e.styles:at.create([e.styles])}define(t=customElements){const e=this.type;if(!this.isDefined){const t=this.attributes,s=e.prototype;for(let e=0,i=t.length;e<i;++e)B.defineProperty(s,t[e]);Reflect.defineProperty(e,"observedAttributes",{value:this.observedAttributes,enumerable:!0}),xt.set(e,this),this.isDefined=!0}return t.get(this.name)||t.define(this.name,e,this.elementOptions),this}static forType(t){return xt.get(t)}}const St=new WeakMap,Bt={bubbles:!0,composed:!0,cancelable:!0};function Tt(t){return t.shadowRoot||St.get(t)||null}class Ot extends v{constructor(t,e){super(t),this.boundObservables=null,this.behaviors=null,this.needsInitialization=!0,this._template=null,this._styles=null,this._isConnected=!1,this.$fastController=this,this.view=null,this.element=t,this.definition=e;const s=e.shadowOptions;if(void 0!==s){const e=t.attachShadow(s);"closed"===s.mode&&St.set(t,e)}const i=B.getAccessors(t);if(i.length>0){const e=this.boundObservables=Object.create(null);for(let s=0,n=i.length;s<n;++s){const n=i[s].name,r=t[n];void 0!==r&&(delete t[n],e[n]=r)}}}get isConnected(){return B.track(this,"isConnected"),this._isConnected}setIsConnected(t){this._isConnected=t,B.notify(this,"isConnected")}get template(){return this._template}set template(t){this._template!==t&&(this._template=t,this.needsInitialization||this.renderTemplate(t))}get styles(){return this._styles}set styles(t){this._styles!==t&&(null!==this._styles&&this.removeStyles(this._styles),this._styles=t,this.needsInitialization||null===t||this.addStyles(t))}addStyles(t){const e=Tt(this.element)||this.element.getRootNode();if(t instanceof HTMLStyleElement)e.append(t);else if(!t.isAttachedTo(e)){const s=t.behaviors;t.addStylesTo(e),null!==s&&this.addBehaviors(s)}}removeStyles(t){const e=Tt(this.element)||this.element.getRootNode();if(t instanceof HTMLStyleElement)e.removeChild(t);else if(t.isAttachedTo(e)){const s=t.behaviors;t.removeStylesFrom(e),null!==s&&this.removeBehaviors(s)}}addBehaviors(t){const e=this.behaviors||(this.behaviors=new Map),s=t.length,i=[];for(let n=0;n<s;++n){const s=t[n];e.has(s)?e.set(s,e.get(s)+1):(e.set(s,1),i.push(s))}if(this._isConnected){const t=this.element;for(let e=0;e<i.length;++e)i[e].bind(t,_)}}removeBehaviors(t,e=!1){const s=this.behaviors;if(null===s)return;const i=t.length,n=[];for(let r=0;r<i;++r){const i=t[r];if(s.has(i)){const t=s.get(i)-1;0===t||e?s.delete(i)&&n.push(i):s.set(i,t)}}if(this._isConnected){const t=this.element;for(let e=0;e<n.length;++e)n[e].unbind(t)}}onConnectedCallback(){if(this._isConnected)return;const t=this.element;this.needsInitialization?this.finishInitialization():null!==this.view&&this.view.bind(t,_);const e=this.behaviors;if(null!==e)for(const[s]of e)s.bind(t,_);this.setIsConnected(!0)}onDisconnectedCallback(){if(!this._isConnected)return;this.setIsConnected(!1);const t=this.view;null!==t&&t.unbind();const e=this.behaviors;if(null!==e){const t=this.element;for(const[s]of e)s.unbind(t)}}onAttributeChangedCallback(t,e,s){const i=this.definition.attributeLookup[t];void 0!==i&&i.onAttributeChangedCallback(this.element,s)}emit(t,e,s){return!!this._isConnected&&this.element.dispatchEvent(new CustomEvent(t,Object.assign(Object.assign({detail:e},Bt),s)))}finishInitialization(){const t=this.element,e=this.boundObservables;if(null!==e){const s=Object.keys(e);for(let i=0,n=s.length;i<n;++i){const n=s[i];t[n]=e[n]}this.boundObservables=null}const s=this.definition;null===this._template&&(this.element.resolveTemplate?this._template=this.element.resolveTemplate():s.template&&(this._template=s.template||null)),null!==this._template&&this.renderTemplate(this._template),null===this._styles&&(this.element.resolveStyles?this._styles=this.element.resolveStyles():s.styles&&(this._styles=s.styles||null)),null!==this._styles&&this.addStyles(this._styles),this.needsInitialization=!1}renderTemplate(t){const e=this.element,s=Tt(e)||e;null!==this.view?(this.view.dispose(),this.view=null):this.needsInitialization||d.removeChildNodes(s),t&&(this.view=t.render(e,s,e))}static forCustomElement(t){const e=t.$fastController;if(void 0!==e)return e;const s=wt.forType(t.constructor);if(void 0===s)throw new Error("Missing FASTElement definition.");return t.$fastController=new Ot(t,s)}}function Nt(t){return class extends t{constructor(){super(),Ot.forCustomElement(this)}$emit(t,e,s){return this.$fastController.emit(t,e,s)}connectedCallback(){this.$fastController.onConnectedCallback()}disconnectedCallback(){this.$fastController.onDisconnectedCallback()}attributeChangedCallback(t,e,s){this.$fastController.onAttributeChangedCallback(t,e,s)}}}const At=Object.assign(Nt(HTMLElement),{from:t=>Nt(t),define:(t,e)=>new wt(t,e).define().type});function kt(t){return function(e){new wt(e,t).define()}}class Vt{createCSS(){return""}createBehavior(){}}function Ft(t,e){const s=[];let i="";const n=[];for(let r=0,o=t.length-1;r<o;++r){i+=t[r];let o=e[r];if(o instanceof Vt){const t=o.createBehavior();o=o.createCSS(),t&&n.push(t)}o instanceof at||o instanceof CSSStyleSheet?(""!==i.trim()&&(s.push(i),i=""),s.push(o)):i+=o}return i+=t[t.length-1],""!==i.trim()&&s.push(i),{styles:s,behaviors:n}}function $t(t,...e){const{styles:s,behaviors:i}=Ft(t,e),n=at.create(s);return i.length&&n.withBehaviors(...i),n}class _t extends Vt{constructor(t,e){super(),this.behaviors=e,this.css="";const s=t.reduce((t,e)=>("string"==typeof e?this.css+=e:t.push(e),t),[]);s.length&&(this.styles=at.create(s))}createBehavior(){return this}createCSS(){return this.css}bind(t){this.styles&&t.$fastController.addStyles(this.styles),this.behaviors.length&&t.$fastController.addBehaviors(this.behaviors)}unbind(t){this.styles&&t.$fastController.removeStyles(this.styles),this.behaviors.length&&t.$fastController.removeBehaviors(this.behaviors)}}function It(t,...e){const{styles:s,behaviors:i}=Ft(t,e);return new _t(s,i)}function Mt(t,e,s){return{index:t,removed:e,addedCount:s}}function Et(t,s,i,n,r,o){let l=0,h=0;const a=Math.min(i-s,o-r);if(0===s&&0===r&&(l=function(t,e,s){for(let i=0;i<s;++i)if(t[i]!==e[i])return i;return s}(t,n,a)),i===t.length&&o===n.length&&(h=function(t,e,s){let i=t.length,n=e.length,r=0;for(;r<s&&t[--i]===e[--n];)r++;return r}(t,n,a-l)),r+=l,o-=h,(i-=h)-(s+=l)==0&&o-r==0)return e;if(s===i){const t=Mt(s,[],0);for(;r<o;)t.removed.push(n[r++]);return[t]}if(r===o)return[Mt(s,[],i-s)];const c=function(t){let e=t.length-1,s=t[0].length-1,i=t[e][s];const n=[];for(;e>0||s>0;){if(0===e){n.push(2),s--;continue}if(0===s){n.push(3),e--;continue}const r=t[e-1][s-1],o=t[e-1][s],l=t[e][s-1];let h;h=o<l?o<r?o:r:l<r?l:r,h===r?(r===i?n.push(0):(n.push(1),i=r),e--,s--):h===o?(n.push(3),e--,i=o):(n.push(2),s--,i=l)}return n.reverse(),n}(function(t,e,s,i,n,r){const o=r-n+1,l=s-e+1,h=new Array(o);let a,c;for(let t=0;t<o;++t)h[t]=new Array(l),h[t][0]=t;for(let t=0;t<l;++t)h[0][t]=t;for(let s=1;s<o;++s)for(let r=1;r<l;++r)t[e+r-1]===i[n+s-1]?h[s][r]=h[s-1][r-1]:(a=h[s-1][r]+1,c=h[s][r-1]+1,h[s][r]=a<c?a:c);return h}(t,s,i,n,r,o)),d=[];let u=void 0,f=s,p=r;for(let t=0;t<c.length;++t)switch(c[t]){case 0:void 0!==u&&(d.push(u),u=void 0),f++,p++;break;case 1:void 0===u&&(u=Mt(f,[],0)),u.addedCount++,f++,u.removed.push(n[p]),p++;break;case 2:void 0===u&&(u=Mt(f,[],0)),u.addedCount++,f++;break;case 3:void 0===u&&(u=Mt(f,[],0)),u.removed.push(n[p]),p++}return void 0!==u&&d.push(u),d}const Lt=Array.prototype.push;function Pt(t,e,s,i){const n=Mt(e,s,i);let r=!1,o=0;for(let e=0;e<t.length;e++){const s=t[e];if(s.index+=o,r)continue;const i=(l=n.index,h=n.index+n.removed.length,a=s.index,c=s.index+s.addedCount,h<a||c<l?-1:h===a||c===l?0:l<a?h<c?h-a:c-a:c<h?c-l:h-l);if(i>=0){t.splice(e,1),e--,o-=s.addedCount-s.removed.length,n.addedCount+=s.addedCount-i;const l=n.removed.length+s.removed.length-i;if(n.addedCount||l){let t=s.removed;if(n.index<s.index){const e=n.removed.slice(0,s.index-n.index);Lt.apply(e,t),t=e}if(n.index+n.removed.length>s.index+s.addedCount){const e=n.removed.slice(s.index+s.addedCount-n.index);Lt.apply(t,e)}n.removed=t,s.index<n.index&&(n.index=s.index)}else r=!0}else if(n.index<s.index){r=!0,t.splice(e,0,n),e++;const i=n.addedCount-n.removed.length;s.index+=i,o+=i}}var l,h,a,c;r||t.push(n)}function jt(t,e){let s=[];const i=function(t){const e=[];for(let s=0,i=t.length;s<i;s++){const i=t[s];Pt(e,i.index,i.removed,i.addedCount)}return e}(e);for(let e=0,n=i.length;e<n;++e){const n=i[e];1!==n.addedCount||1!==n.removed.length?s=s.concat(Et(t,n.index,n.index+n.addedCount,n.removed,0,n.removed.length)):n.removed[0]!==t[n.index]&&s.push(n)}return s}let Rt=!1;function zt(t,e){let s=t.index;const i=e.length;return s>i?s=i-t.addedCount:s<0&&(s=i+t.removed.length+s-t.addedCount),s<0&&(s=0),t.index=s,t}class Ht extends b{constructor(t){super(t),this.oldCollection=void 0,this.splices=void 0,this.needsQueue=!0,this.call=this.flush,t.$fastController=this}addSplice(t){void 0===this.splices?this.splices=[t]:this.splices.push(t),this.needsQueue&&(this.needsQueue=!1,d.queueUpdate(this))}reset(t){this.oldCollection=t,this.needsQueue&&(this.needsQueue=!1,d.queueUpdate(this))}flush(){const t=this.splices,e=this.oldCollection;if(void 0===t&&void 0===e)return;this.needsQueue=!0,this.splices=void 0,this.oldCollection=void 0;const s=void 0===e?jt(this.source,t):Et(this.source,0,this.source.length,e,0,e.length);this.notify(s)}}function Ut(){if(Rt)return;Rt=!0,B.setArrayObserverFactory(t=>new Ht(t));const t=Array.prototype,e=t.pop,s=t.push,i=t.reverse,n=t.shift,r=t.sort,o=t.splice,l=t.unshift;t.pop=function(){const t=this.length>0,s=e.apply(this,arguments),i=this.$fastController;return void 0!==i&&t&&i.addSplice(Mt(this.length,[s],0)),s},t.push=function(){const t=s.apply(this,arguments),e=this.$fastController;return void 0!==e&&e.addSplice(zt(Mt(this.length-arguments.length,[],arguments.length),this)),t},t.reverse=function(){let t;const e=this.$fastController;void 0!==e&&(e.flush(),t=this.slice());const s=i.apply(this,arguments);return void 0!==e&&e.reset(t),s},t.shift=function(){const t=this.length>0,e=n.apply(this,arguments),s=this.$fastController;return void 0!==s&&t&&s.addSplice(Mt(0,[e],0)),e},t.sort=function(){let t;const e=this.$fastController;void 0!==e&&(e.flush(),t=this.slice());const s=r.apply(this,arguments);return void 0!==e&&e.reset(t),s},t.splice=function(){const t=o.apply(this,arguments),e=this.$fastController;return void 0!==e&&e.addSplice(zt(Mt(+arguments[0],t,arguments.length>2?arguments.length-2:0),this)),t},t.unshift=function(){const t=l.apply(this,arguments),e=this.$fastController;return void 0!==e&&e.addSplice(zt(Mt(0,[],arguments.length),this)),t}}class Qt{constructor(t,e){this.target=t,this.propertyName=e}bind(t){t[this.propertyName]=this.target}unbind(){}}function qt(t){return new L("fast-ref",Qt,t)}function Wt(t,e){const s="function"==typeof e?e:()=>e;return(e,i)=>t(e,i)?s(e,i):null}const Dt=Object.freeze({positioning:!1});function Gt(t,e,s,i){t.bind(e[s],i)}function Jt(t,e,s,i){const n=Object.create(i);n.index=s,n.length=e.length,t.bind(e[s],n)}class Kt{constructor(t,e,s,i,n,r){this.location=t,this.itemsBinding=e,this.templateBinding=i,this.options=r,this.source=null,this.views=[],this.items=null,this.itemsObserver=null,this.originalContext=void 0,this.childContext=void 0,this.bindView=Gt,this.itemsBindingObserver=B.binding(e,this,s),this.templateBindingObserver=B.binding(i,this,n),r.positioning&&(this.bindView=Jt)}bind(t,e){this.source=t,this.originalContext=e,this.childContext=Object.create(e),this.childContext.parent=t,this.childContext.parentContext=this.originalContext,this.items=this.itemsBindingObserver.observe(t,this.originalContext),this.template=this.templateBindingObserver.observe(t,this.originalContext),this.observeItems(!0),this.refreshAllViews()}unbind(){this.source=null,this.items=null,null!==this.itemsObserver&&this.itemsObserver.unsubscribe(this),this.unbindAllViews(),this.itemsBindingObserver.disconnect(),this.templateBindingObserver.disconnect()}handleChange(t,e){t===this.itemsBinding?(this.items=this.itemsBindingObserver.observe(this.source,this.originalContext),this.observeItems(),this.refreshAllViews()):t===this.templateBinding?(this.template=this.templateBindingObserver.observe(this.source,this.originalContext),this.refreshAllViews(!0)):this.updateViews(e)}observeItems(t=!1){if(!this.items)return void(this.items=e);const s=this.itemsObserver,i=this.itemsObserver=B.getNotifier(this.items),n=s!==i;n&&null!==s&&s.unsubscribe(this),(n||t)&&i.subscribe(this)}updateViews(t){const e=this.childContext,s=this.views,i=[],n=this.bindView;let r=0;for(let e=0,n=t.length;e<n;++e){const n=t[e],o=n.removed;i.push(...s.splice(n.index+r,o.length)),r-=n.addedCount}const o=this.items,l=this.template;for(let r=0,h=t.length;r<h;++r){const h=t[r];let a=h.index;const c=a+h.addedCount;for(;a<c;++a){const t=s[a],r=t?t.firstChild:this.location,h=i.length>0?i.shift():l.create();s.splice(a,0,h),n(h,o,a,e),h.insertBefore(r)}}for(let t=0,e=i.length;t<e;++t)i[t].dispose();if(this.options.positioning)for(let t=0,e=s.length;t<e;++t){const i=s[t].context;i.length=e,i.index=t}}refreshAllViews(t=!1){const e=this.items,s=this.childContext,i=this.template,n=this.location,r=this.bindView;let o=e.length,l=this.views,h=l.length;if((0===o||t)&&(rt.disposeContiguousBatch(l),h=0),0===h){this.views=l=new Array(o);for(let t=0;t<o;++t){const o=i.create();r(o,e,t,s),l[t]=o,o.insertBefore(n)}}else{let t=0;for(;t<o;++t)if(t<h){r(l[t],e,t,s)}else{const o=i.create();r(o,e,t,s),l.push(o),o.insertBefore(n)}const a=l.splice(t,h-t);for(t=0,o=a.length;t<o;++t)a[t].dispose()}}unbindAllViews(){const t=this.views;for(let e=0,s=t.length;e<s;++e)t[e].unbind()}}class Xt extends M{constructor(t,e,s){super(),this.itemsBinding=t,this.templateBinding=e,this.options=s,this.createPlaceholder=d.createBlockPlaceholder,Ut(),this.isItemsBindingVolatile=B.isVolatileBinding(t),this.isTemplateBindingVolatile=B.isVolatileBinding(e)}createBehavior(t){return new Kt(t,this.itemsBinding,this.isItemsBindingVolatile,this.templateBinding,this.isTemplateBindingVolatile,this.options)}}function Yt(t,e,s=Dt){return new Xt(t,"function"==typeof e?e:()=>e,s)}function Zt(t){return t?function(e,s,i){return 1===e.nodeType&&e.matches(t)}:function(t,e,s){return 1===t.nodeType}}class 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e=t.$fastController||y.get(t);return void 0===e&&(Array.isArray(t)?e=w(t):y.set(t,e=new v(t))),e},track(t,e){void 0!==x&&x.watch(t,e)},trackVolatile(){void 0!==x&&(x.needsRefresh=!0)},notify(t,e){T(t).notify(e)},defineProperty(t,e){"string"==typeof e&&(e=new S(e)),this.getAccessors(t).push(e),Reflect.defineProperty(t,e.name,{enumerable:!0,get:function(){return e.getValue(this)},set:function(t){e.setValue(this,t)}})},getAccessors(t){let e=C.get(t);if(void 0===e){let s=Reflect.getPrototypeOf(t);for(;void 0===e&&null!==s;)e=C.get(s),s=Reflect.getPrototypeOf(s);e=void 0===e?[]:e.slice(0),C.set(t,e)}return e},binding(t,e,s=this.isVolatileBinding(t)){return new I(t,e,s)},isVolatileBinding:t=>m.test(t.toString())}),T=B.getNotifier,O=B.trackVolatile,N=d.queueUpdate;function A(t,e){B.defineProperty(t,e)}function k(t,e,s){return Object.assign({},s,{get:function(){return O(),s.get.apply(this)}})}let V=null;function F(t){V=t}class 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0!==t;)t.notifier.unsubscribe(this,t.propertyName),t=t.next;this.last=null,this.needsRefresh=this.needsQueue=!0}}watch(t,e){const s=this.last,i=T(t),n=null===s?this.first:{};if(n.propertySource=t,n.propertyName=e,n.notifier=i,i.subscribe(this,e),null!==s){if(!this.needsRefresh){let e;x=void 0,e=s.propertySource[s.propertyName],x=this,t===e&&(this.needsRefresh=!0)}s.next=n}this.last=n}handleChange(){this.needsQueue&&(this.needsQueue=!1,N(this))}call(){null!==this.last&&(this.needsQueue=!0,this.notify(this))}records(){let t=this.first;return{next:()=>{const e=t;return void 0===e?{value:void 0,done:!0}:(t=t.next,{value:e,done:!1})},[Symbol.iterator]:function(){return this}}}}class M{constructor(){this.targetIndex=0}}class E extends M{constructor(){super(...arguments),this.createPlaceholder=d.createInterpolationPlaceholder}}class L extends M{constructor(t,e,s){super(),this.name=t,this.behavior=e,this.options=s}createPlaceholder(t){return 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0===e?e=t.create():this.target.$fastTemplate!==t&&(e.isComposed&&(e.remove(),e.unbind()),e=t.create()),e.isComposed?e.needsBindOnly&&(e.needsBindOnly=!1,e.bind(this.source,this.context)):(e.isComposed=!0,e.bind(this.source,this.context),e.insertBefore(this.target),this.target.$fastView=e,this.target.$fastTemplate=t)}else{const e=this.target.$fastView;void 0!==e&&e.isComposed&&(e.isComposed=!1,e.remove(),e.needsBindOnly?e.needsBindOnly=!1:e.unbind()),this.target.textContent=t}}function W(t){this.target[this.targetName]=t}function D(t){const e=this.classVersions||Object.create(null),s=this.target;let i=this.version||0;if(null!=t&&t.length){const n=t.split(/\s+/);for(let t=0,r=n.length;t<r;++t){const r=n[t];""!==r&&(e[r]=i,s.classList.add(r))}}if(this.classVersions=e,this.version=i+1,0!==i){i-=1;for(const t in e)e[t]===i&&s.classList.remove(t)}}class G extends 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t=0,e=i.length;t<e;++t)i[t].unbind(n)}}}}class ot{constructor(t,e){this.behaviorCount=0,this.hasHostBehaviors=!1,this.fragment=null,this.targetOffset=0,this.viewBehaviorFactories=null,this.hostBehaviorFactories=null,this.html=t,this.directives=e}create(t){if(null===this.fragment){let t;const e=this.html;if("string"==typeof e){t=document.createElement("template"),t.innerHTML=d.createHTML(e);const s=t.content.firstElementChild;null!==s&&"TEMPLATE"===s.tagName&&(t=s)}else t=e;const s=it(t,this.directives);this.fragment=s.fragment,this.viewBehaviorFactories=s.viewBehaviorFactories,this.hostBehaviorFactories=s.hostBehaviorFactories,this.targetOffset=s.targetOffset,this.behaviorCount=this.viewBehaviorFactories.length+this.hostBehaviorFactories.length,this.hasHostBehaviors=this.hostBehaviorFactories.length>0}const e=this.fragment.cloneNode(!0),s=this.viewBehaviorFactories,i=new Array(this.behaviorCount),n=d.createTemplateWalker(e);let r=0,o=this.targetOffset,l=n.nextNode();for(let t=s.length;r<t;++r){const t=s[r],e=t.targetIndex;for(;null!==l;){if(o===e){i[r]=t.createBehavior(l);break}l=n.nextNode(),o++}}if(this.hasHostBehaviors){const e=this.hostBehaviorFactories;for(let s=0,n=e.length;s<n;++s,++r)i[r]=e[s].createBehavior(t)}return new rt(e,i)}render(t,e,s){"string"==typeof e&&(e=document.getElementById(e)),void 0===s&&(s=e);const i=this.create(s);return i.bind(t,_),i.appendTo(e),i}}const lt=/([ \x09\x0a\x0c\x0d])([^\0-\x1F\x7F-\x9F "'>=/]+)([ \x09\x0a\x0c\x0d]*=[ \x09\x0a\x0c\x0d]*(?:[^ \x09\x0a\x0c\x0d"'`<>=]*|"[^"]*|'[^']*))$/;function ht(t,...e){const s=[];let i="";for(let n=0,r=t.length-1;n<r;++n){const r=t[n];let o=e[n];if(i+=r,o instanceof ot){const t=o;o=()=>t}if("function"==typeof o&&(o=new G(o)),o instanceof E){const t=lt.exec(r);null!==t&&(o.targetName=t[2])}o instanceof M?(i+=o.createPlaceholder(s.length),s.push(o)):i+=o}return i+=t[t.length-1],new ot(i,s)}class at{constructor(){this.targets=new WeakSet,this.behaviors=null}addStylesTo(t){this.targets.add(t)}removeStylesFrom(t){this.targets.delete(t)}isAttachedTo(t){return this.targets.has(t)}withBehaviors(...t){return this.behaviors=null===this.behaviors?t:this.behaviors.concat(t),this}}function ct(t){return t.map(t=>t instanceof at?ct(t.styles):[t]).reduce((t,e)=>t.concat(e),[])}function dt(t){return t.map(t=>t instanceof at?t.behaviors:null).reduce((t,e)=>null===e?t:(null===t&&(t=[]),t.concat(e)),null)}at.create=(()=>{if(d.supportsAdoptedStyleSheets){const t=new Map;return e=>new ut(e,t)}return t=>new pt(t)})();class ut extends at{constructor(t,e){super(),this.styles=t,this.styleSheetCache=e,this._styleSheets=void 0,this.behaviors=dt(t)}get styleSheets(){if(void 0===this._styleSheets){const t=this.styles,e=this.styleSheetCache;this._styleSheets=ct(t).map(t=>{if(t instanceof CSSStyleSheet)return t;let s=e.get(t);return void 0===s&&(s=new CSSStyleSheet,s.replaceSync(t),e.set(t,s)),s})}return this._styleSheets}addStylesTo(t){t.adoptedStyleSheets=[...t.adoptedStyleSheets,...this.styleSheets],super.addStylesTo(t)}removeStylesFrom(t){const e=this.styleSheets;t.adoptedStyleSheets=t.adoptedStyleSheets.filter(t=>-1===e.indexOf(t)),super.removeStylesFrom(t)}}let ft=0;class pt extends at{constructor(t){super(),this.styles=t,this.behaviors=null,this.behaviors=dt(t),this.styleSheets=ct(t),this.styleClass="fast-style-class-"+ ++ft}addStylesTo(t){const e=this.styleSheets,s=this.styleClass;t=this.normalizeTarget(t);for(let i=0;i<e.length;i++){const n=document.createElement("style");n.innerHTML=e[i],n.className=s,t.append(n)}super.addStylesTo(t)}removeStylesFrom(t){const e=(t=this.normalizeTarget(t)).querySelectorAll("."+this.styleClass);for(let s=0,i=e.length;s<i;++s)t.removeChild(e[s]);super.removeStylesFrom(t)}isAttachedTo(t){return super.isAttachedTo(this.normalizeTarget(t))}normalizeTarget(t){return t===document?document.body:t}}const gt={toView:t=>t?"true":"false",fromView:t=>null!=t&&"false"!==t&&!1!==t&&0!==t},bt={toView(t){if(null==t)return null;const e=1*t;return isNaN(e)?null:e.toString()},fromView(t){if(null==t)return null;const e=1*t;return isNaN(e)?null:e}};class vt{constructor(t,e,s=e.toLowerCase(),i="reflect",n){this.guards=new Set,this.Owner=t,this.name=e,this.attribute=s,this.mode=i,this.converter=n,this.fieldName="_"+e,this.callbackName=e+"Changed",this.hasCallback=this.callbackName in t.prototype,"boolean"===i&&void 0===n&&(this.converter=gt)}setValue(t,e){const s=t[this.fieldName],i=this.converter;void 0!==i&&(e=i.fromView(e)),s!==e&&(t[this.fieldName]=e,this.tryReflectToAttribute(t),this.hasCallback&&t[this.callbackName](s,e),t.$fastController.notify(this.name))}getValue(t){return B.track(t,this.name),t[this.fieldName]}onAttributeChangedCallback(t,e){this.guards.has(t)||(this.guards.add(t),this.setValue(t,e),this.guards.delete(t))}tryReflectToAttribute(t){const e=this.mode,s=this.guards;s.has(t)||"fromView"===e||d.queueUpdate(()=>{s.add(t);const i=t[this.fieldName];switch(e){case"reflect":const e=this.converter;d.setAttribute(t,this.attribute,void 0!==e?e.toView(i):i);break;case"boolean":d.setBooleanAttribute(t,this.attribute,i)}s.delete(t)})}static collect(t,...e){const s=[];e.push(t.attributes);for(let i=0,n=e.length;i<n;++i){const n=e[i];if(void 0!==n)for(let e=0,i=n.length;e<i;++e){const i=n[e];"string"==typeof i?s.push(new vt(t,i)):s.push(new vt(t,i.property,i.attribute,i.mode,i.converter))}}return s}}function mt(t,e){let s;function i(t,e){arguments.length>1&&(s.property=e);const i=t.constructor.attributes||(t.constructor.attributes=[]);i.push(s)}return arguments.length>1?(s={},void i(t,e)):(s=void 0===t?{}:t,i)}const yt={mode:"open"},Ct={},xt=new Map;class wt{constructor(t,e=t.definition){"string"==typeof e&&(e={name:e}),this.type=t,this.name=e.name,this.template=e.template;const s=vt.collect(t,e.attributes),i=new Array(s.length),n={},r={};for(let t=0,e=s.length;t<e;++t){const e=s[t];i[t]=e.attribute,n[e.name]=e,r[e.attribute]=e}this.attributes=s,this.observedAttributes=i,this.propertyLookup=n,this.attributeLookup=r,this.shadowOptions=void 0===e.shadowOptions?yt:null===e.shadowOptions?void 0:Object.assign(Object.assign({},yt),e.shadowOptions),this.elementOptions=void 0===e.elementOptions?Ct:Object.assign(Object.assign({},Ct),e.elementOptions),this.styles=void 0===e.styles?void 0:Array.isArray(e.styles)?at.create(e.styles):e.styles instanceof at?e.styles:at.create([e.styles])}define(t=customElements){const e=this.type;if(!this.isDefined){const t=this.attributes,s=e.prototype;for(let e=0,i=t.length;e<i;++e)B.defineProperty(s,t[e]);Reflect.defineProperty(e,"observedAttributes",{value:this.observedAttributes,enumerable:!0}),xt.set(e,this),this.isDefined=!0}return t.get(this.name)||t.define(this.name,e,this.elementOptions),this}static forType(t){return xt.get(t)}}const St=new WeakMap,Bt={bubbles:!0,composed:!0,cancelable:!0};function Tt(t){return t.shadowRoot||St.get(t)||null}class Ot extends v{constructor(t,e){super(t),this.boundObservables=null,this.behaviors=null,this.needsInitialization=!0,this._template=null,this._styles=null,this._isConnected=!1,this.$fastController=this,this.view=null,this.element=t,this.definition=e;const s=e.shadowOptions;if(void 0!==s){const e=t.attachShadow(s);"closed"===s.mode&&St.set(t,e)}const i=B.getAccessors(t);if(i.length>0){const e=this.boundObservables=Object.create(null);for(let s=0,n=i.length;s<n;++s){const n=i[s].name,r=t[n];void 0!==r&&(delete t[n],e[n]=r)}}}get isConnected(){return B.track(this,"isConnected"),this._isConnected}setIsConnected(t){this._isConnected=t,B.notify(this,"isConnected")}get template(){return this._template}set template(t){this._template!==t&&(this._template=t,this.needsInitialization||this.renderTemplate(t))}get styles(){return this._styles}set styles(t){this._styles!==t&&(null!==this._styles&&this.removeStyles(this._styles),this._styles=t,this.needsInitialization||null===t||this.addStyles(t))}addStyles(t){const e=Tt(this.element)||this.element.getRootNode();if(t instanceof HTMLStyleElement)e.append(t);else if(!t.isAttachedTo(e)){const s=t.behaviors;t.addStylesTo(e),null!==s&&this.addBehaviors(s)}}removeStyles(t){const e=Tt(this.element)||this.element.getRootNode();if(t instanceof HTMLStyleElement)e.removeChild(t);else if(t.isAttachedTo(e)){const s=t.behaviors;t.removeStylesFrom(e),null!==s&&this.removeBehaviors(s)}}addBehaviors(t){const e=this.behaviors||(this.behaviors=new Map),s=t.length,i=[];for(let n=0;n<s;++n){const s=t[n];e.has(s)?e.set(s,e.get(s)+1):(e.set(s,1),i.push(s))}if(this._isConnected){const t=this.element;for(let e=0;e<i.length;++e)i[e].bind(t,_)}}removeBehaviors(t,e=!1){const s=this.behaviors;if(null===s)return;const i=t.length,n=[];for(let r=0;r<i;++r){const i=t[r];if(s.has(i)){const t=s.get(i)-1;0===t||e?s.delete(i)&&n.push(i):s.set(i,t)}}if(this._isConnected){const t=this.element;for(let e=0;e<n.length;++e)n[e].unbind(t)}}onConnectedCallback(){if(this._isConnected)return;const t=this.element;this.needsInitialization?this.finishInitialization():null!==this.view&&this.view.bind(t,_);const e=this.behaviors;if(null!==e)for(const[s]of e)s.bind(t,_);this.setIsConnected(!0)}onDisconnectedCallback(){if(!this._isConnected)return;this.setIsConnected(!1);const t=this.view;null!==t&&t.unbind();const e=this.behaviors;if(null!==e){const t=this.element;for(const[s]of e)s.unbind(t)}}onAttributeChangedCallback(t,e,s){const i=this.definition.attributeLookup[t];void 0!==i&&i.onAttributeChangedCallback(this.element,s)}emit(t,e,s){return!!this._isConnected&&this.element.dispatchEvent(new CustomEvent(t,Object.assign(Object.assign({detail:e},Bt),s)))}finishInitialization(){const t=this.element,e=this.boundObservables;if(null!==e){const s=Object.keys(e);for(let i=0,n=s.length;i<n;++i){const n=s[i];t[n]=e[n]}this.boundObservables=null}const s=this.definition;null===this._template&&(this.element.resolveTemplate?this._template=this.element.resolveTemplate():s.template&&(this._template=s.template||null)),null!==this._template&&this.renderTemplate(this._template),null===this._styles&&(this.element.resolveStyles?this._styles=this.element.resolveStyles():s.styles&&(this._styles=s.styles||null)),null!==this._styles&&this.addStyles(this._styles),this.needsInitialization=!1}renderTemplate(t){const e=this.element,s=Tt(e)||e;null!==this.view?(this.view.dispose(),this.view=null):this.needsInitialization||d.removeChildNodes(s),t&&(this.view=t.render(e,s,e))}static forCustomElement(t){const e=t.$fastController;if(void 0!==e)return e;const s=wt.forType(t.constructor);if(void 0===s)throw new Error("Missing FASTElement definition.");return t.$fastController=new Ot(t,s)}}function Nt(t){return class extends t{constructor(){super(),Ot.forCustomElement(this)}$emit(t,e,s){return this.$fastController.emit(t,e,s)}connectedCallback(){this.$fastController.onConnectedCallback()}disconnectedCallback(){this.$fastController.onDisconnectedCallback()}attributeChangedCallback(t,e,s){this.$fastController.onAttributeChangedCallback(t,e,s)}}}const At=Object.assign(Nt(HTMLElement),{from:t=>Nt(t),define:(t,e)=>new wt(t,e).define().type});function kt(t){return function(e){new wt(e,t).define()}}class Vt{createCSS(){return""}createBehavior(){}}function Ft(t,e){const s=[];let i="";const n=[];for(let r=0,o=t.length-1;r<o;++r){i+=t[r];let o=e[r];if(o instanceof Vt){const t=o.createBehavior();o=o.createCSS(),t&&n.push(t)}o instanceof at||o instanceof CSSStyleSheet?(""!==i.trim()&&(s.push(i),i=""),s.push(o)):i+=o}return i+=t[t.length-1],""!==i.trim()&&s.push(i),{styles:s,behaviors:n}}function $t(t,...e){const{styles:s,behaviors:i}=Ft(t,e),n=at.create(s);return i.length&&n.withBehaviors(...i),n}class _t extends Vt{constructor(t,e){super(),this.behaviors=e,this.css="";const s=t.reduce((t,e)=>("string"==typeof e?this.css+=e:t.push(e),t),[]);s.length&&(this.styles=at.create(s))}createBehavior(){return this}createCSS(){return this.css}bind(t){this.styles&&t.$fastController.addStyles(this.styles),this.behaviors.length&&t.$fastController.addBehaviors(this.behaviors)}unbind(t){this.styles&&t.$fastController.removeStyles(this.styles),this.behaviors.length&&t.$fastController.removeBehaviors(this.behaviors)}}function It(t,...e){const{styles:s,behaviors:i}=Ft(t,e);return new _t(s,i)}function Mt(t,e,s){return{index:t,removed:e,addedCount:s}}function Et(t,s,i,n,r,o){let l=0,h=0;const a=Math.min(i-s,o-r);if(0===s&&0===r&&(l=function(t,e,s){for(let i=0;i<s;++i)if(t[i]!==e[i])return i;return s}(t,n,a)),i===t.length&&o===n.length&&(h=function(t,e,s){let i=t.length,n=e.length,r=0;for(;r<s&&t[--i]===e[--n];)r++;return r}(t,n,a-l)),r+=l,o-=h,(i-=h)-(s+=l)==0&&o-r==0)return e;if(s===i){const t=Mt(s,[],0);for(;r<o;)t.removed.push(n[r++]);return[t]}if(r===o)return[Mt(s,[],i-s)];const c=function(t){let e=t.length-1,s=t[0].length-1,i=t[e][s];const n=[];for(;e>0||s>0;){if(0===e){n.push(2),s--;continue}if(0===s){n.push(3),e--;continue}const r=t[e-1][s-1],o=t[e-1][s],l=t[e][s-1];let h;h=o<l?o<r?o:r:l<r?l:r,h===r?(r===i?n.push(0):(n.push(1),i=r),e--,s--):h===o?(n.push(3),e--,i=o):(n.push(2),s--,i=l)}return n.reverse(),n}(function(t,e,s,i,n,r){const o=r-n+1,l=s-e+1,h=new Array(o);let a,c;for(let t=0;t<o;++t)h[t]=new Array(l),h[t][0]=t;for(let t=0;t<l;++t)h[0][t]=t;for(let s=1;s<o;++s)for(let r=1;r<l;++r)t[e+r-1]===i[n+s-1]?h[s][r]=h[s-1][r-1]:(a=h[s-1][r]+1,c=h[s][r-1]+1,h[s][r]=a<c?a:c);return h}(t,s,i,n,r,o)),d=[];let u=void 0,f=s,p=r;for(let t=0;t<c.length;++t)switch(c[t]){case 0:void 0!==u&&(d.push(u),u=void 0),f++,p++;break;case 1:void 0===u&&(u=Mt(f,[],0)),u.addedCount++,f++,u.removed.push(n[p]),p++;break;case 2:void 0===u&&(u=Mt(f,[],0)),u.addedCount++,f++;break;case 3:void 0===u&&(u=Mt(f,[],0)),u.removed.push(n[p]),p++}return void 0!==u&&d.push(u),d}const Lt=Array.prototype.push;function Pt(t,e,s,i){const n=Mt(e,s,i);let r=!1,o=0;for(let e=0;e<t.length;e++){const s=t[e];if(s.index+=o,r)continue;const i=(l=n.index,h=n.index+n.removed.length,a=s.index,c=s.index+s.addedCount,h<a||c<l?-1:h===a||c===l?0:l<a?h<c?h-a:c-a:c<h?c-l:h-l);if(i>=0){t.splice(e,1),e--,o-=s.addedCount-s.removed.length,n.addedCount+=s.addedCount-i;const l=n.removed.length+s.removed.length-i;if(n.addedCount||l){let t=s.removed;if(n.index<s.index){const e=n.removed.slice(0,s.index-n.index);Lt.apply(e,t),t=e}if(n.index+n.removed.length>s.index+s.addedCount){const e=n.removed.slice(s.index+s.addedCount-n.index);Lt.apply(t,e)}n.removed=t,s.index<n.index&&(n.index=s.index)}else r=!0}else if(n.index<s.index){r=!0,t.splice(e,0,n),e++;const i=n.addedCount-n.removed.length;s.index+=i,o+=i}}var l,h,a,c;r||t.push(n)}function jt(t,e){let s=[];const i=function(t){const e=[];for(let s=0,i=t.length;s<i;s++){const i=t[s];Pt(e,i.index,i.removed,i.addedCount)}return e}(e);for(let e=0,n=i.length;e<n;++e){const n=i[e];1!==n.addedCount||1!==n.removed.length?s=s.concat(Et(t,n.index,n.index+n.addedCount,n.removed,0,n.removed.length)):n.removed[0]!==t[n.index]&&s.push(n)}return s}let Rt=!1;function zt(t,e){let s=t.index;const i=e.length;return s>i?s=i-t.addedCount:s<0&&(s=i+t.removed.length+s-t.addedCount),s<0&&(s=0),t.index=s,t}class Ht extends b{constructor(t){super(t),this.oldCollection=void 0,this.splices=void 0,this.needsQueue=!0,this.call=this.flush,t.$fastController=this}addSplice(t){void 0===this.splices?this.splices=[t]:this.splices.push(t),this.needsQueue&&(this.needsQueue=!1,d.queueUpdate(this))}reset(t){this.oldCollection=t,this.needsQueue&&(this.needsQueue=!1,d.queueUpdate(this))}flush(){const t=this.splices,e=this.oldCollection;if(void 0===t&&void 0===e)return;this.needsQueue=!0,this.splices=void 0,this.oldCollection=void 0;const s=void 0===e?jt(this.source,t):Et(this.source,0,this.source.length,e,0,e.length);this.notify(s)}}function Ut(){if(Rt)return;Rt=!0,B.setArrayObserverFactory(t=>new Ht(t));const t=Array.prototype,e=t.pop,s=t.push,i=t.reverse,n=t.shift,r=t.sort,o=t.splice,l=t.unshift;t.pop=function(){const t=this.length>0,s=e.apply(this,arguments),i=this.$fastController;return void 0!==i&&t&&i.addSplice(Mt(this.length,[s],0)),s},t.push=function(){const t=s.apply(this,arguments),e=this.$fastController;return void 0!==e&&e.addSplice(zt(Mt(this.length-arguments.length,[],arguments.length),this)),t},t.reverse=function(){let t;const e=this.$fastController;void 0!==e&&(e.flush(),t=this.slice());const s=i.apply(this,arguments);return void 0!==e&&e.reset(t),s},t.shift=function(){const t=this.length>0,e=n.apply(this,arguments),s=this.$fastController;return void 0!==s&&t&&s.addSplice(Mt(0,[e],0)),e},t.sort=function(){let t;const e=this.$fastController;void 0!==e&&(e.flush(),t=this.slice());const s=r.apply(this,arguments);return void 0!==e&&e.reset(t),s},t.splice=function(){const t=o.apply(this,arguments),e=this.$fastController;return void 0!==e&&e.addSplice(zt(Mt(+arguments[0],t,arguments.length>2?arguments.length-2:0),this)),t},t.unshift=function(){const t=l.apply(this,arguments),e=this.$fastController;return void 0!==e&&e.addSplice(zt(Mt(0,[],arguments.length),this)),t}}class Qt{constructor(t,e){this.target=t,this.propertyName=e}bind(t){t[this.propertyName]=this.target}unbind(){}}function qt(t){return new L("fast-ref",Qt,t)}function Wt(t,e){const s="function"==typeof e?e:()=>e;return(e,i)=>t(e,i)?s(e,i):null}const Dt=Object.freeze({positioning:!1,recycle:!0});function Gt(t,e,s,i){t.bind(e[s],i)}function Jt(t,e,s,i){const n=Object.create(i);n.index=s,n.length=e.length,t.bind(e[s],n)}class Kt{constructor(t,e,s,i,n,r){this.location=t,this.itemsBinding=e,this.templateBinding=i,this.options=r,this.source=null,this.views=[],this.items=null,this.itemsObserver=null,this.originalContext=void 0,this.childContext=void 0,this.bindView=Gt,this.itemsBindingObserver=B.binding(e,this,s),this.templateBindingObserver=B.binding(i,this,n),r.positioning&&(this.bindView=Jt)}bind(t,e){this.source=t,this.originalContext=e,this.childContext=Object.create(e),this.childContext.parent=t,this.childContext.parentContext=this.originalContext,this.items=this.itemsBindingObserver.observe(t,this.originalContext),this.template=this.templateBindingObserver.observe(t,this.originalContext),this.observeItems(!0),this.refreshAllViews()}unbind(){this.source=null,this.items=null,null!==this.itemsObserver&&this.itemsObserver.unsubscribe(this),this.unbindAllViews(),this.itemsBindingObserver.disconnect(),this.templateBindingObserver.disconnect()}handleChange(t,e){t===this.itemsBinding?(this.items=this.itemsBindingObserver.observe(this.source,this.originalContext),this.observeItems(),this.refreshAllViews()):t===this.templateBinding?(this.template=this.templateBindingObserver.observe(this.source,this.originalContext),this.refreshAllViews(!0)):this.updateViews(e)}observeItems(t=!1){if(!this.items)return void(this.items=e);const s=this.itemsObserver,i=this.itemsObserver=B.getNotifier(this.items),n=s!==i;n&&null!==s&&s.unsubscribe(this),(n||t)&&i.subscribe(this)}updateViews(t){const e=this.childContext,s=this.views,i=[],n=this.bindView;let r=0;for(let e=0,n=t.length;e<n;++e){const n=t[e],o=n.removed;i.push(...s.splice(n.index+r,o.length)),r-=n.addedCount}const o=this.items,l=this.template;for(let r=0,h=t.length;r<h;++r){const h=t[r];let a=h.index;const c=a+h.addedCount;for(;a<c;++a){const t=s[a],r=t?t.firstChild:this.location,h=this.options.recycle&&i.length>0?i.shift():l.create();s.splice(a,0,h),n(h,o,a,e),h.insertBefore(r)}}for(let t=0,e=i.length;t<e;++t)i[t].dispose();if(this.options.positioning)for(let t=0,e=s.length;t<e;++t){const i=s[t].context;i.length=e,i.index=t}}refreshAllViews(t=!1){const e=this.items,s=this.childContext,i=this.template,n=this.location,r=this.bindView;let o=e.length,l=this.views,h=l.length;if((0===o||t)&&(rt.disposeContiguousBatch(l),h=0),0===h){this.views=l=new Array(o);for(let t=0;t<o;++t){const o=i.create();r(o,e,t,s),l[t]=o,o.insertBefore(n)}}else{let t=0;for(;t<o;++t)if(t<h){r(l[t],e,t,s)}else{const o=i.create();r(o,e,t,s),l.push(o),o.insertBefore(n)}const a=l.splice(t,h-t);for(t=0,o=a.length;t<o;++t)a[t].dispose()}}unbindAllViews(){const t=this.views;for(let e=0,s=t.length;e<s;++e)t[e].unbind()}}class Xt extends M{constructor(t,e,s){super(),this.itemsBinding=t,this.templateBinding=e,this.options=s,this.createPlaceholder=d.createBlockPlaceholder,Ut(),this.isItemsBindingVolatile=B.isVolatileBinding(t),this.isTemplateBindingVolatile=B.isVolatileBinding(e)}createBehavior(t){return new Kt(t,this.itemsBinding,this.isItemsBindingVolatile,this.templateBinding,this.isTemplateBindingVolatile,this.options)}}function Yt(t,e,s=Dt){return new Xt(t,"function"==typeof e?e:()=>e,s)}function Zt(t){return t?function(e,s,i){return 1===e.nodeType&&e.matches(t)}:function(t,e,s){return 1===t.nodeType}}class te{constructor(t,e){this.target=t,this.options=e,this.source=null}bind(t){const e=this.options.property;this.shouldUpdate=B.getAccessors(t).some(t=>t.name===e),this.source=t,this.updateTarget(this.computeNodes()),this.shouldUpdate&&this.observe()}unbind(){this.updateTarget(e),this.source=null,this.shouldUpdate&&this.disconnect()}handleEvent(){this.updateTarget(this.computeNodes())}computeNodes(){let t=this.getNodes();return void 0!==this.options.filter&&(t=t.filter(this.options.filter)),t}updateTarget(t){this.source[this.options.property]=t}}class ee extends te{constructor(t,e){super(t,e)}observe(){this.target.addEventListener("slotchange",this)}disconnect(){this.target.removeEventListener("slotchange",this)}getNodes(){return this.target.assignedNodes(this.options)}}function se(t){return"string"==typeof t&&(t={property:t}),new L("fast-slotted",ee,t)}class ie extends te{constructor(t,e){super(t,e),this.observer=null,e.childList=!0}observe(){null===this.observer&&(this.observer=new MutationObserver(this.handleEvent.bind(this))),this.observer.observe(this.target,this.options)}disconnect(){this.observer.disconnect()}getNodes(){return"subtree"in this.options?Array.from(this.target.querySelectorAll(this.options.selector)):Array.from(this.target.childNodes)}}function ne(t){return"string"==typeof t&&(t={property:t}),new L("fast-children",ie,t)}export{t as $global,L as AttachedBehaviorHTMLDirective,vt as AttributeDefinition,J as BindingBehavior,Vt as CSSDirective,ie as ChildrenBehavior,Ot as Controller,d as DOM,at as ElementStyles,$ as ExecutionContext,At as FASTElement,wt as FASTElementDefinition,G as HTMLBindingDirective,M as HTMLDirective,rt as HTMLView,B as Observable,v as PropertyChangeNotifier,Qt as RefBehavior,Kt as RepeatBehavior,Xt as RepeatDirective,ee as SlottedBehavior,b as SubscriberSet,E as TargetedHTMLDirective,ot as ViewTemplate,mt as attr,gt as booleanConverter,ne as children,it as compileTemplate,$t as css,It as cssPartial,kt as customElement,_ as defaultExecutionContext,Zt as elements,e as emptyArray,Ut as enableArrayObservation,ht as html,bt as nullableNumberConverter,A as observable,qt as ref,Yt as repeat,F as setCurrentEvent,se as slotted,k as volatile,Wt as when};

docs/ACKNOWLEDGEMENTS.md

@@ -5,2 +5,4 @@ # Acknowledgements
 
+* [.NET](https://dotnet.microsoft.com/) - Many thanks to the .NET team for sharing their policies and practices upon which our issue management and release planning docs and practices were based.
+* [asap](https://github.com/kriskowal/asap) - An awesome, time-tested async task queue implementation that heavily inspired our DOM update system.
 * [Aurelia 1 and Aurelia 2](https://aurelia.io/) - Various details of Aurelia 2's decorator and metadata model inspired us in the design of `fast-element`. Additionally, Aurelia 1's mechanisms for array observation, binding, and template compilation also guided us in our work.
@@ -12,2 +14,1 @@ * [faastjs](https://github.com/faastjs) - A project with a similar name but a very different purpose. Their API documentation approach leveraging [api-extractor](https://api-extractor.com/) was a huge help to us.
 * [Vue](https://vuejs.org/) - We liked the terseness of the `:` and `@` syntax in templates, so we adapted it along with some modifications in our templates.
-* [asap](https://github.com/kriskowal/asap) - An awesome, time-tested async task queue implementation that heavily inspired our DOM update system.

docs/api-report.md

@@ -464,3 +464,4 @@ ## API Report File for "@microsoft/fast-element"
 export interface RepeatOptions {
-    positioning: boolean;
+    positioning?: boolean;
+    recycle?: boolean;
 }
@@ -467,0 +468,0 @@

docs/guide/declaring-templates.md

@@ -226,1 +226,5 @@ ---
 In addition to dynamic template selection during the `connectedCallback`, the `$fastController` property of `FASTElement` enables dynamically changing the template at any time through setting the controller's `template` property to any valid template.
+
+:::tip
+Check out [our Cheat Sheet](https://www.fast.design/docs/resources/cheat-sheet#bindings) for a quick guide on bindings.
+:::

docs/guide/defining-elements.md

@@ -50,4 +50,5 @@ ---
 
+  // optional method 
   greetingChanged() {
-    this.shadowRoot!.innerHTML = this.greeting;
+    ...
   }
@@ -63,3 +64,3 @@ }
 
-By default, anything extending from `FASTElement` will automatically have a `ShadowRoot` attached in order to enable encapsulated rendering. The example above references the `shadowRoot` to set its `innerHTML` any time the `greeting` property changes.
+By default, anything extending from `FASTElement` will automatically have a `ShadowRoot` attached in order to enable encapsulated rendering. 
 
@@ -66,0 +67,0 @@ To see it in action, you can use the same HTML as above, or change the default `greeting` with the following:

docs/guide/next-steps.md

@@ -12,2 +12,4 @@ ---
 
+For a quick reference on what you've learned, check out [our Cheat Sheet](https://www.fast.design/docs/resources/cheat-sheet).
+
 Happy componenting!

docs/guide/using-directives.md

@@ -143,2 +143,15 @@ ---
 
+Whether or not a repeat directive re-uses item views can be controlled with the `recycle` option setting. When `recycle: true`, which is the default value, the repeat directive may reuse views rather than create new ones from the template.  When `recycle: false` 
+previously used views are always discarded and each item will always be assigned a new view. Recyling previously used views may improve performance in some situations but may also be "dirty" from the previously displayed item.
+
+**Example: List Rendering without view recycling**
+
+```html
+<ul>
+  ${repeat(x => x.friends, html<string>`
+    <li>${(x, c) => c.index} ${x => x}</li>
+  `, { recycle: false })}
+</ul>
+```
+
 In addition to providing a template to render the items with, you can also provide an expression that evaluates to a template. This enables you to dynamically change what you are using to render the items. Each item will still be rendered with the same template, but you can use techniques from "Composing Templates" below to render a different template depending on the item itself.
@@ -517,5 +530,4 @@
 
-  connectedCallback() {
-    super.connectedCallback();
-    console.log(this.slottedNodes);
+  slottedNodesChanged() {
+    // respond to changes in slotted node
   }
@@ -527,2 +539,6 @@ }
 
+:::tip
+It's best to leverage a change handler for slotted nodes rather than assuming that the nodes will be present in the `connectedCallback`.
+:::
+
 ## Host directives
@@ -529,0 +545,0 @@

package.json

@@ -5,3 +5,3 @@ {
   "sideEffects": false,
-  "version": "1.6.2",
+  "version": "1.7.0",
   "author": {
@@ -74,3 +74,3 @@ "name": "Microsoft",
     "rollup": "^2.7.6",
-    "rollup-plugin-filesize": "^8.0.2",
+    "rollup-plugin-filesize": "^9.1.2",
     "rollup-plugin-terser": "^5.3.0",
@@ -77,0 +77,0 @@ "rollup-plugin-transform-tagged-template": "^0.0.3",

README.md

@@ -41,3 +41,3 @@ # FAST Element
         <script type="module">
-          import { FASTElement } from "https://unpkg.com/@microsoft/fast-element";
+          import { FASTElement } from "https://cdn.jsdelivr.net/npm/@microsoft/fast-element/dist/fast-element.min.js";
 
@@ -51,8 +51,14 @@ // your code here
 
-:::important
-The above CDN location points to the latest release of `fast-element`. It is advised that when you deploy your site or app, you import the specific version you have developed and tested with.
-:::
+The markup above always references the latest release. When deploying to production, you will want to ship with a specific version. Here's an example of the markup for that:
 
+```html
+<script type="module" src="https://cdn.jsdelivr.net/npm/@microsoft/fast-element@1.6.2/dist/fast-element.min.js"></script>
+```
+
 :::note
 For simplicity, examples throughout the documentation will assume the library has been installed from NPM, but you can always replace the import location with the CDN URL.
+:::
+
+:::tip
+Looking for a quick guide on building components?  Check out [our Cheat Sheet](https://www.fast.design/docs/resources/cheat-sheet#building-components).
 :::

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