chore: avoid reporting inspections when an exception occurs

Author: trueadm

.changeset/light-crews-deny.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+chore: avoid reporting inspections when an exception occurs

packages/svelte/src/internal/client/dev/inspect.js

@@ -1,3 +1,4 @@
+import { UNINITIALIZED } from '../../../constants.js';
 import { snapshot } from '../../shared/clone.js';
 import { inspect_effect, validate_effect } from '../reactivity/effects.js';
 
@@ -12,7 +13,22 @@ export function inspect(get_value, inspector = console.log) {
 	let initial = true;
 
 	inspect_effect(() => {
-		inspector(initial ? 'init' : 'update', ...snapshot(get_value(), true));
+		/** @type {any} */
+		var value = UNINITIALIZED;
+
+		// Capturing the value might result in an exception due to the inspect effect being
+		// sync and thus operating on stale data. In the case we encounter an exception we
+		// can bail-out of reporting the value
+		try {
+			value = get_value();
+		} catch {
+			// NO-OP
+		}
+
+		if (value !== UNINITIALIZED) {
+			inspector(initial ? 'init' : 'update', ...snapshot(value, true));
+		}
+
 		initial = false;
 	});
 }