import { createElement, Fragment } from 'react';

var R=0,k=1,j=2;var D=new Set(["area","base","br","col","embed","hr","img","input","keygen","link","meta","param","source","track","wbr"]),x=new Set(["script","style"]),_=/([\@\.a-z0-9_\:\-]*)\s*?=?\s*?(['"]?)([\s\S]*?)\2\s+/gim,o=/(?:<(\/?)([a-zA-Z][a-zA-Z0-9\:-]*)(?:\s([^>]*?))?((?:\s*\/)?)>|(<\!\-\-)([\s\S]*?)(\-\->)|(<\!)([\s\S]*?)(>))/gm;function P(e){let t={},a;if(e)for(_.lastIndex=0,e=" "+(e||"")+" ";a=_.exec(e);)a[0]!==" "&&(t[a[1]]=a[3]);return t}function w(e){let t=typeof e=="string"?e:e.value,a,r,n,i,l,d,g,h,s,c=[];o.lastIndex=0,r=a={type:0,children:[]};let E=0;function m(){i=t.substring(E,o.lastIndex-n[0].length),i&&r.children.push({type:2,value:i,parent:r});}for(;n=o.exec(t);){if(d=n[5]||n[8],g=n[6]||n[9],h=n[7]||n[10],x.has(r.name)&&n[2]!==r.name){l=o.lastIndex-n[0].length,r.children.length>0&&(r.children[0].value+=n[0]);continue}else if(d==="<!--"){if(l=o.lastIndex-n[0].length,x.has(r.name))continue;s={type:3,value:g,parent:r,loc:[{start:l,end:l+d.length},{start:o.lastIndex-h.length,end:o.lastIndex}]},c.push(s),s.parent.children.push(s);}else if(d==="<!")l=o.lastIndex-n[0].length,s={type:4,value:g,parent:r,loc:[{start:l,end:l+d.length},{start:o.lastIndex-h.length,end:o.lastIndex}]},c.push(s),s.parent.children.push(s);else if(n[1]!=="/")if(m(),x.has(r.name)){E=o.lastIndex,m();continue}else s={type:1,name:n[2]+"",attributes:P(n[3]),parent:r,children:[],loc:[{start:o.lastIndex-n[0].length,end:o.lastIndex}]},c.push(s),s.parent.children.push(s),n[4]&&n[4].indexOf("/")>-1||D.has(s.name)?(s.loc[1]=s.loc[0],s.isSelfClosingTag=!0):r=s;else m(),n[2]+""===r.name?(s=r,r=s.parent,s.loc.push({start:o.lastIndex-n[0].length,end:o.lastIndex}),i=t.substring(s.loc[0].end,s.loc[1].start),s.children.length===0&&s.children.push({type:2,value:i,parent:r})):n[2]+""===c[c.length-1].name&&c[c.length-1].isSelfClosingTag===!0&&(s=c[c.length-1],s.loc.push({start:o.lastIndex-n[0].length,end:o.lastIndex}));E=o.lastIndex;}return i=t.slice(E),r.children.push({type:2,value:i,parent:r}),a}

let ids = 0;
function convert(children) {
	let doc = w(children.toString().trim());
	let id = ids++;
	let key = 0;

	function createReactElementFromNode(node) {
		const childVnodes =
			Array.isArray(node.children) && node.children.length
				? node.children.map((child) => createReactElementFromNode(child)).filter(Boolean)
				: undefined;

		if (node.type === R) {
			return createElement(Fragment, {}, childVnodes);
		} else if (node.type === k) {
			const { class: className, ...props } = node.attributes;
			return createElement(node.name, { ...props, className, key: `${id}-${key++}` }, childVnodes);
		} else if (node.type === j) {
			// 0-length text gets omitted in JSX
			return node.value.trim() ? node.value : undefined;
		}
	}

	const root = createReactElementFromNode(doc);
	return root.props.children;
}

export { convert as default };