correctly handle attributes with dots in names

src/nodes/html.ts

@@ -159,7 +159,11 @@ export default class HTMLElement extends Node {
 			return 'null';
 		}
 
-		return JSON.stringify(attr.replace(/"/g, '"')).replace(/\\t/g, '\t').replace(/\\n/g, '\n').replace(/\\r/g, '\r').replace(/\\/g, '');
+		return JSON.stringify(attr.replace(/"/g, '"'))
+			.replace(/\\t/g, '\t')
+			.replace(/\\n/g, '\n')
+			.replace(/\\r/g, '\r')
+			.replace(/\\/g, '');
 	}
 
 	/**
@@ -373,11 +377,7 @@ export default class HTMLElement extends Node {
 			return child === this;
 		});
 		resetParent([this], null);
-		parent.childNodes = [
-			...parent.childNodes.slice(0, idx),
-			...resetParent(content, parent),
-			...parent.childNodes.slice(idx + 1),
-		];
+		parent.childNodes = [...parent.childNodes.slice(0, idx), ...resetParent(content, parent), ...parent.childNodes.slice(idx + 1)];
 		return this;
 	}
 
@@ -456,10 +456,12 @@ export default class HTMLElement extends Node {
 		this.childNodes.length = o;
 
 		// remove whitespace between attributes
-		const attrs = Object.keys( this.rawAttributes).map((key) => {
-			const val = this.rawAttributes[key];
-			return `${key}=${ JSON.stringify(val)}`;
-		}).join(' ');
+		const attrs = Object.keys(this.rawAttributes)
+			.map((key) => {
+				const val = this.rawAttributes[key];
+				return `${key}=${JSON.stringify(val)}`;
+			})
+			.join(' ');
 		this.rawAttrs = attrs;
 		delete this._rawAttrs;
 		return this;
@@ -565,7 +567,7 @@ export default class HTMLElement extends Node {
 			if (child.nodeType === NodeType.ELEMENT_NODE) {
 				if (child.id === id) {
 					return child;
-				};
+				}
 
 				// if children are existing push the current status to the stack and keep searching for elements in the level below
 				if (child.childNodes.length > 0) {
@@ -686,7 +688,7 @@ export default class HTMLElement extends Node {
 		}
 		const attrs = {} as RawAttributes;
 		if (this.rawAttrs) {
-			const re = /([a-zA-Z()[\]#@$.?:][a-zA-Z0-9-_:()[\]#]*)(?:\s*=\s*((?:'[^']*')|(?:"[^"]*")|\S+))?/g;
+			const re = /([a-zA-Z()\[\]#@$.?:][a-zA-Z0-9-._:()[\]#]*)(?:\s*=\s*((?:'[^']*')|(?:"[^"]*")|\S+))?/g;
 			let match: RegExpExecArray;
 			while ((match = re.exec(this.rawAttrs))) {
 				const key = match[1];
@@ -1023,7 +1025,7 @@ export interface Options {
 		 * void tag serialisation, add a final slash <br/>
 		 */
 		closingSlash?: boolean;
-	}
+	};
 }
 
 const frameflag = 'documentfragmentcontainer';
@@ -1109,7 +1111,7 @@ export function base_parse(data: string, options = {} as Partial<Options>) {
 		if (!leadingSlash) {
 			/* Populate attributes */
 			const attrs = {} as Record<string, string>;
-			for (let attMatch; (attMatch = kAttributePattern.exec(attributes));) {
+			for (let attMatch; (attMatch = kAttributePattern.exec(attributes)); ) {
 				const { 1: key, 2: val } = attMatch;
 				const isQuoted = val[0] === `'` || val[0] === `"`;
 				attrs[key.toLowerCase()] = isQuoted ? val.slice(1, val.length - 1) : val;
@@ -1247,7 +1249,7 @@ export function parse(data: string, options = {} as Partial<Options>) {
  * and removes nodes from any potential parent.
  */
 function resolveInsertable(insertable: NodeInsertable[]): Node[] {
-	return insertable.map(val => {
+	return insertable.map((val) => {
 		if (typeof val === 'string') {
 			return new TextNode(val);
 		}

test/tests/attributes-with-dots.js

@@ -0,0 +1,44 @@
+const { parse } = require('@test/test-target');
+
+describe('funky attributes', function () {
+	it('x-transition.duration.500ms', function () {
+		const root = parse('<div x-transition.duration.500ms></div>');
+		const div = root.firstChild;
+		div.getAttribute('x-transition.duration.500ms').should.eql('');
+		div.toString().should.eql('<div x-transition.duration.500ms></div>');
+	});
+
+	it('x-transition:enter.duration.500ms and x-transition:leave.duration.400ms', function () {
+		const root = parse('<div x-transition:enter.duration.500ms x-transition:leave.duration.400ms></div>');
+		const div = root.firstChild;
+		div.getAttribute('x-transition:enter.duration.500ms').should.eql('');
+		div.getAttribute('x-transition:leave.duration.400ms').should.eql('');
+		div.toString().should.eql('<div x-transition:enter.duration.500ms x-transition:leave.duration.400ms></div>');
+	});
+
+	it('@click="open = ! open"', function () {
+		const root = parse('<button @click="open = ! open">Toggle</button>');
+		const div = root.firstChild;
+		div.getAttribute('@click').should.eql('open = ! open');
+		div.toString().should.eql('<button @click="open = ! open">Toggle</button>');
+	});
+
+	it('a bunch of stuff at the same time', function () {
+		const root = parse(
+			'<div x-show="open" x-transition:enter="transition ease-out duration-300" x-transition:enter-start="opacity-0 scale-90" x-transition:enter-end="opacity-100 scale-100" x-transition:leave="transition ease-in duration-300" x-transition:leave-start="opacity-100 scale-100" x-transition:leave-end="opacity-0 scale-90">Hello 👋</div>'
+		);
+		const div = root.firstChild;
+
+		div.getAttribute('x-show').should.eql('open');
+		div.getAttribute('x-transition:enter').should.eql('transition ease-out duration-300');
+		div.getAttribute('x-transition:enter-start').should.eql('opacity-0 scale-90');
+		div.getAttribute('x-transition:enter-end').should.eql('opacity-100 scale-100');
+		div.getAttribute('x-transition:leave').should.eql('transition ease-in duration-300');
+		div.getAttribute('x-transition:leave-start').should.eql('opacity-100 scale-100');
+		div.getAttribute('x-transition:leave-end').should.eql('opacity-0 scale-90');
+
+		div.toString().should.eql(
+			'<div x-show="open" x-transition:enter="transition ease-out duration-300" x-transition:enter-start="opacity-0 scale-90" x-transition:enter-end="opacity-100 scale-100" x-transition:leave="transition ease-in duration-300" x-transition:leave-start="opacity-100 scale-100" x-transition:leave-end="opacity-0 scale-90">Hello 👋</div>'
+		);
+	});
+});