lit-html/node/lit-html.js

HTML templates literals in JavaScript

/**
 * @license
 * Copyright 2017 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */
const t=globalThis,i=t=>t,s=t.trustedTypes,e=s?s.createPolicy("lit-html",{createHTML:t=>t}):void 0,h="$lit$",o=`lit$${Math.random().toFixed(9).slice(2)}$`,n="?"+o,r=`<${n}>`,l=void 0===t.document?{createTreeWalker:()=>({})}:document,c=()=>l.createComment(""),a=t=>null===t||"object"!=typeof t&&"function"!=typeof t,u=Array.isArray,d=t=>u(t)||"function"==typeof t?.[Symbol.iterator],f="[ \t\n\f\r]",v=/<(?:(!--|\/[^a-zA-Z])|(\/?[a-zA-Z][^>\s]*)|(\/?$))/g,_=/-->/g,m=/>/g,p=RegExp(`>|${f}(?:([^\\s"'>=/]+)(${f}*=${f}*(?:[^ \t\n\f\r"'\`<>=]|("|')|))|$)`,"g"),g=/'/g,$=/"/g,y=/^(?:script|style|textarea|title)$/i,x=t=>(i,...s)=>({_$litType$:t,strings:i,values:s}),T=x(1),b=x(2),w=x(3),E=Symbol.for("lit-noChange"),A=Symbol.for("lit-nothing"),C=new WeakMap,P=l.createTreeWalker(l,129);function V(t,i){if(!u(t)||!t.hasOwnProperty("raw"))throw Error("invalid template strings array");return void 0!==e?e.createHTML(i):i}const N=(t,i)=>{const s=t.length-1,e=[];let n,l=2===i?"<svg>":3===i?"<math>":"",c=v;for(let i=0;i<s;i++){const s=t[i];let a,u,d=-1,f=0;for(;f<s.length&&(c.lastIndex=f,u=c.exec(s),null!==u);)f=c.lastIndex,c===v?"!--"===u[1]?c=_:void 0!==u[1]?c=m:void 0!==u[2]?(y.test(u[2])&&(n=RegExp("</"+u[2],"g")),c=p):void 0!==u[3]&&(c=p):c===p?">"===u[0]?(c=n??v,d=-1):void 0===u[1]?d=-2:(d=c.lastIndex-u[2].length,a=u[1],c=void 0===u[3]?p:'"'===u[3]?$:g):c===$||c===g?c=p:c===_||c===m?c=v:(c=p,n=void 0);const x=c===p&&t[i+1].startsWith("/>")?" ":"";l+=c===v?s+r:d>=0?(e.push(a),s.slice(0,d)+h+s.slice(d)+o+x):s+o+(-2===d?i:x)}return[V(t,l+(t[s]||"<?>")+(2===i?"</svg>":3===i?"</math>":"")),e]};class S{constructor({strings:t,_$litType$:i},e){let r;this.parts=[];let l=0,a=0;const u=t.length-1,d=this.parts,[f,v]=N(t,i);if(this.el=S.createElement(f,e),P.currentNode=this.el.content,2===i||3===i){const t=this.el.content.firstChild;t.replaceWith(...t.childNodes)}for(;null!==(r=P.nextNode())&&d.length<u;){if(1===r.nodeType){if(r.hasAttributes())for(const t of r.getAttributeNames())if(t.endsWith(h)){const i=v[a++],s=r.getAttribute(t).split(o),e=/([.?@])?(.*)/.exec(i);d.push({type:1,index:l,name:e[2],strings:s,ctor:"."===e[1]?I:"?"===e[1]?L:"@"===e[1]?z:H}),r.removeAttribute(t)}else t.startsWith(o)&&(d.push({type:6,index:l}),r.removeAttribute(t));if(y.test(r.tagName)){const t=r.textContent.split(o),i=t.length-1;if(i>0){r.textContent=s?s.emptyScript:"";for(let s=0;s<i;s++)r.append(t[s],c()),P.nextNode(),d.push({type:2,index:++l});r.append(t[i],c())}}}else if(8===r.nodeType)if(r.data===n)d.push({type:2,index:l});else{let t=-1;for(;-1!==(t=r.data.indexOf(o,t+1));)d.push({type:7,index:l}),t+=o.length-1}l++}}static createElement(t,i){const s=l.createElement("template");return s.innerHTML=t,s}}function M(t,i,s=t,e){if(i===E)return i;let h=void 0!==e?s._$Co?.[e]:s._$Cl;const o=a(i)?void 0:i._$litDirective$;return h?.constructor!==o&&(h?._$AO?.(!1),void 0===o?h=void 0:(h=new o(t),h._$AT(t,s,e)),void 0!==e?(s._$Co??=[])[e]=h:s._$Cl=h),void 0!==h&&(i=M(t,h._$AS(t,i.values),h,e)),i}class k{constructor(t,i){this._$AV=[],this._$AN=void 0,this._$AD=t,this._$AM=i}get parentNode(){return this._$AM.parentNode}get _$AU(){return this._$AM._$AU}u(t){const{el:{content:i},parts:s}=this._$AD,e=(t?.creationScope??l).importNode(i,!0);P.currentNode=e;let h=P.nextNode(),o=0,n=0,r=s[0];for(;void 0!==r;){if(o===r.index){let i;2===r.type?i=new R(h,h.nextSibling,this,t):1===r.type?i=new r.ctor(h,r.name,r.strings,this,t):6===r.type&&(i=new W(h,this,t)),this._$AV.push(i),r=s[++n]}o!==r?.index&&(h=P.nextNode(),o++)}return P.currentNode=l,e}p(t){let i=0;for(const s of this._$AV)void 0!==s&&(void 0!==s.strings?(s._$AI(t,s,i),i+=s.strings.length-2):s._$AI(t[i])),i++}}class R{get _$AU(){return this._$AM?._$AU??this._$Cv}constructor(t,i,s,e){this.type=2,this._$AH=A,this._$AN=void 0,this._$AA=t,this._$AB=i,this._$AM=s,this.options=e,this._$Cv=e?.isConnected??!0}get parentNode(){let t=this._$AA.parentNode;const i=this._$AM;return void 0!==i&&11===t?.nodeType&&(t=i.parentNode),t}get startNode(){return this._$AA}get endNode(){return this._$AB}_$AI(t,i=this){t=M(this,t,i),a(t)?t===A||null==t||""===t?(this._$AH!==A&&this._$AR(),this._$AH=A):t!==this._$AH&&t!==E&&this._(t):void 0!==t._$litType$?this.$(t):void 0!==t.nodeType?this.T(t):d(t)?this.k(t):this._(t)}O(t){return this._$AA.parentNode.insertBefore(t,this._$AB)}T(t){this._$AH!==t&&(this._$AR(),this._$AH=this.O(t))}_(t){this._$AH!==A&&a(this._$AH)?this._$AA.nextSibling.data=t:this.T(l.createTextNode(t)),this._$AH=t}$(t){const{values:i,_$litType$:s}=t,e="number"==typeof s?this._$AC(t):(void 0===s.el&&(s.el=S.createElement(V(s.h,s.h[0]),this.options)),s);if(this._$AH?._$AD===e)this._$AH.p(i);else{const t=new k(e,this),s=t.u(this.options);t.p(i),this.T(s),this._$AH=t}}_$AC(t){let i=C.get(t.strings);return void 0===i&&C.set(t.strings,i=new S(t)),i}k(t){u(this._$AH)||(this._$AH=[],this._$AR());const i=this._$AH;let s,e=0;for(const h of t)e===i.length?i.push(s=new R(this.O(c()),this.O(c()),this,this.options)):s=i[e],s._$AI(h),e++;e<i.length&&(this._$AR(s&&s._$AB.nextSibling,e),i.length=e)}_$AR(t=this._$AA.nextSibling,s){for(this._$AP?.(!1,!0,s);t!==this._$AB;){const s=i(t).nextSibling;i(t).remove(),t=s}}setConnected(t){void 0===this._$AM&&(this._$Cv=t,this._$AP?.(t))}}class H{get tagName(){return this.element.tagName}get _$AU(){return this._$AM._$AU}constructor(t,i,s,e,h){this.type=1,this._$AH=A,this._$AN=void 0,this.element=t,this.name=i,this._$AM=e,this.options=h,s.length>2||""!==s[0]||""!==s[1]?(this._$AH=Array(s.length-1).fill(new String),this.strings=s):this._$AH=A}_$AI(t,i=this,s,e){const h=this.strings;let o=!1;if(void 0===h)t=M(this,t,i,0),o=!a(t)||t!==this._$AH&&t!==E,o&&(this._$AH=t);else{const e=t;let n,r;for(t=h[0],n=0;n<h.length-1;n++)r=M(this,e[s+n],i,n),r===E&&(r=this._$AH[n]),o||=!a(r)||r!==this._$AH[n],r===A?t=A:t!==A&&(t+=(r??"")+h[n+1]),this._$AH[n]=r}o&&!e&&this.j(t)}j(t){t===A?this.element.removeAttribute(this.name):this.element.setAttribute(this.name,t??"")}}class I extends H{constructor(){super(...arguments),this.type=3}j(t){this.element[this.name]=t===A?void 0:t}}class L extends H{constructor(){super(...arguments),this.type=4}j(t){this.element.toggleAttribute(this.name,!!t&&t!==A)}}class z extends H{constructor(t,i,s,e,h){super(t,i,s,e,h),this.type=5}_$AI(t,i=this){if((t=M(this,t,i,0)??A)===E)return;const s=this._$AH,e=t===A&&s!==A||t.capture!==s.capture||t.once!==s.once||t.passive!==s.passive,h=t!==A&&(s===A||e);e&&this.element.removeEventListener(this.name,this,s),h&&this.element.addEventListener(this.name,this,t),this._$AH=t}handleEvent(t){"function"==typeof this._$AH?this._$AH.call(this.options?.host??this.element,t):this._$AH.handleEvent(t)}}class W{constructor(t,i,s){this.element=t,this.type=6,this._$AN=void 0,this._$AM=i,this.options=s}get _$AU(){return this._$AM._$AU}_$AI(t){M(this,t)}}const Z={M:h,P:o,A:n,C:1,L:N,R:k,D:d,V:M,I:R,H,N:L,U:z,B:I,F:W},j=t.litHtmlPolyfillSupport;j?.(S,R),(t.litHtmlVersions??=[]).push("3.3.2");const B=(t,i,s)=>{const e=s?.renderBefore??i;let h=e._$litPart$;if(void 0===h){const t=s?.renderBefore??null;e._$litPart$=h=new R(i.insertBefore(c(),t),t,void 0,s??{})}return h._$AI(t),h};export{Z as _$LH,T as html,w as mathml,E as noChange,A as nothing,B as render,b as svg};
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