check visited for cyclical values

12 months ago · e1cfa14f93
parent c6d7fcab08
commit e1cfa14f93
1 changed files with 5 additions and 3 deletions
--- a/packages/svelte/src/internal/client/runtime.js
+++ b/packages/svelte/src/internal/client/runtime.js
@ -1800,12 +1800,14 @@ export function pop(accessors) {

 /**
 * @param {any} value
+ * @param {Set<any>} visited
 * @returns {void}
 */
-function deep_read(value) {
-	if (typeof value === 'object' && value !== null) {
+function deep_read(value, visited = new Set()) {
+	if (typeof value === 'object' && value !== null && !visited.has(value)) {
+		visited.add(value);
 		for (let key in value) {
-			deep_read(value[key]);
+			deep_read(value[key], visited);
 		}
 		const proto = Object.getPrototypeOf(value);
 		if (