Make coverage go back to 100%

@simulcast/preact/tests/useBroadcast.test.tsx

@@ -2,10 +2,10 @@
 import { broadcast, type EventRegistry } from "@simulcast/core";
 import { useBroadcast } from "@simulcast/preact";
 import { assertStrictEquals } from "@std/assert";
-import { type ComponentProps, render, type TargetedMouseEvent } from "preact";
-import { useState } from "preact/hooks";
 import { mockDOM } from "@test/mockDOM.ts";
 import { timeout } from "@test/timeout.ts";
+import { type ComponentProps, render, type TargetedMouseEvent } from "preact";
+import { useState } from "preact/hooks";
 
 const CountComponent = (properties: ComponentProps<"button">) => {
 	const [count, setCount] = useState(0);
@@ -78,9 +78,9 @@ Deno.test(
 		) as HTMLButtonElement;
 
 		addButton.click(); // Click button that will re-render once
-		await timeout();
+		await timeout(10);
 		addButton.click(); // Click button that will re-render twice
-		await timeout();
+		await timeout(10);
 		broadcastButton.click(); // Click broadcast button once
 		assertStrictEquals(state.calledTimes, 1); // State should be updated once
 		assertStrictEquals(addButton.textContent, "2"); // Even when it re-rendered twice

@simulcast/react/tests/useBroadcast.test.tsx

@@ -2,10 +2,10 @@
 import { broadcast, type EventRegistry } from "@simulcast/core";
 import { useBroadcast } from "@simulcast/react";
 import { assertStrictEquals } from "@std/assert";
-import { type ComponentProps, type MouseEvent, useState } from "react";
-import { createRoot } from "react-dom/client";
 import { mockDOM } from "@test/mockDOM.ts";
 import { timeout } from "@test/timeout.ts";
+import { type ComponentProps, type MouseEvent, useState } from "react";
+import { createRoot } from "react-dom/client";
 
 const CountComponent = (properties: ComponentProps<"button">) => {
 	const [count, setCount] = useState(0);
@@ -69,7 +69,7 @@ Deno.test(
 			),
 		);
 
-		await timeout(3);
+		await timeout(10);
 
 		const addButton = document.querySelector<HTMLButtonElement>(
 			"button.add",
@@ -131,7 +131,7 @@ Deno.test("Broadcast's on handler is removed when unmounted", async () => {
 
 	root.render(<App />);
 
-	await timeout(1);
+	await timeout(10);
 
 	const toggleButton = document.querySelector<HTMLButtonElement>(
 		"button.toggle",

deno.json

@@ -44,11 +44,11 @@
 		"@types/react": "npm:@types/react@^19.2.7",
 		"@types/react-dom": "npm:@types/react-dom@^19.2.3",
 		"@vue/test-utils": "npm:@vue/test-utils@^2.4.6",
-		"linkedom": "npm:linkedom@^0.18.12",
-		"preact": "npm:preact@~10.27.2",
-		"preact-render-to-string": "npm:preact-render-to-string@~6.6.3",
-		"react": "npm:react@^19.2.0",
-		"react-dom": "npm:react-dom@^19.2.0",
+		"happy-dom": "npm:happy-dom@^20.0.11",
+		"preact": "npm:preact@~10.28.0",
+		"preact-render-to-string": "npm:preact-render-to-string@~6.6.4",
+		"react": "npm:react@^19.2.3",
+		"react-dom": "npm:react-dom@^19.2.3",
 		"vue": "npm:vue@^3.5.25"
 	},
 	"lint": {

test/mockDOM.ts

@@ -1,4 +1,5 @@
-import { parseHTML } from "linkedom/worker";
+// deno-coverage-ignore-file
+import { Window } from "happy-dom";
 
 Error.stackTraceLimit = Infinity;
 
@@ -8,7 +9,7 @@ const properties = [
 	"SVGElement",
 	"document",
 	"window",
-] as const satisfies ReadonlyArray<keyof ReturnType<typeof parseHTML>>;
+] as const satisfies ReadonlyArray<keyof InstanceType<typeof Window>>;
 
 /**
  * Sets a global mocked DOM or resets it if it's already set.
@@ -30,10 +31,12 @@ export const mockDOM = (
 		template?: string;
 	} = {},
 ): void => {
-	const parsed = parseHTML(template);
+	const window = new Window();
+
+	window.document.body.innerHTML = template;
 
 	properties.forEach((property) =>
-		Object.assign(globalThis, { [property]: parsed[property] })
+		Object.assign(globalThis, { [property]: window[property] })
 	);
 
 	if (fakeTimers) {

test/setupTests.ts

@@ -1,3 +1,4 @@
+// deno-coverage-ignore-file
 import { mockDOM } from "./mockDOM.ts";
 
 mockDOM();