failing test for #10511

packages/svelte/tests/runtime-browser/samples/binding-width-height-this-timing/_config.js

@@ -0,0 +1,13 @@
+import { test } from '../../assert';
+import { log } from './log.js';
+
+export default test({
+	async test({ assert }) {
+		await new Promise((fulfil) => setTimeout(fulfil, 0));
+
+		assert.deepEqual(log, [
+			[false, 0, 0],
+			[true, 100, 100]
+		]);
+	}
+});

packages/svelte/tests/runtime-browser/samples/binding-width-height-this-timing/log.js

@@ -0,0 +1,2 @@
+/** @type {any[]} */
+export const log = [];

packages/svelte/tests/runtime-browser/samples/binding-width-height-this-timing/main.svelte

@@ -0,0 +1,23 @@
+<script>
+  import { log } from './log.js';
+
+	let w = 0;
+	let h = 0;
+
+  /** @type {HTMLElement} */
+	let div;
+
+	$: {
+		log.push([!!div, w, h]);
+	}
+</script>
+
+<div bind:this={div} bind:clientWidth={w} bind:clientHeight={h} class="box"></div>
+
+<style>
+	.box {
+		width: 100px;
+		height: 100px;
+		background: #ff3e00;
+	}
+</style>