From 016b3f16a3e868e998913d7fa5674d3b7b6b745c Mon Sep 17 00:00:00 2001
From: Pawel Kozlowski <pkozlowski.opensource@gmail.com>
Date: Fri, 7 Jun 2019 15:28:33 +0200
Subject: [PATCH] refactor(ivy): improve debug message for assertDataInRange
 (#30918)

PR Close #30918
---
 packages/core/src/util/assert.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/core/src/util/assert.ts b/packages/core/src/util/assert.ts
index 58b93ffb2f..cb81c78b7c 100644
--- a/packages/core/src/util/assert.ts
+++ b/packages/core/src/util/assert.ts
@@ -80,5 +80,6 @@ export function assertDomNode(node: any) {
 
 
 export function assertDataInRange(arr: any[], index: number) {
-  assertLessThan(index, arr ? arr.length : 0, 'index expected to be a valid data index');
+  const maxLen = arr ? arr.length : 0;
+  assertLessThan(index, maxLen, `Index expected to be less than ${maxLen} but got ${index}`);
 }