From cb87caa2754ca7bb216683c564241b63b6fe9039 Mon Sep 17 00:00:00 2001
From: Matteo Colombo <matt2colo@gmail.com>
Date: Sat, 23 Aug 2025 16:48:38 +0200
Subject: [PATCH] fix(from): exclude from array-like objects not
 index-accessible

iterable objects that also have length property are not considered array-like
unless they also have index access (i.e. obj[0])

closes issue 7497
---
 packages/observable/src/observable.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/observable/src/observable.ts b/packages/observable/src/observable.ts
index 31f8403d15..0f094132f5 100644
--- a/packages/observable/src/observable.ts
+++ b/packages/observable/src/observable.ts
@@ -1319,7 +1319,13 @@ function isIterable(input: any): input is Iterable<any> {
 }
 
 export function isArrayLike<T>(x: any): x is ArrayLike<T> {
-  return x && typeof x.length === 'number' && !isFunction(x);
+  return (
+    x &&
+    typeof x.length === 'number' &&
+    !isFunction(x) &&
+    x.length >= 0 &&
+    (x.length === 0 || (typeof x !== 'string' && 0 in x))
+  );
 }
 
 /**