From 0cdd6e31cbd6098be791ebf9b6cc95b5c97c29dd Mon Sep 17 00:00:00 2001
From: Timo <36011879+Bodlux@users.noreply.github.com>
Date: Tue, 14 Apr 2026 23:09:25 +0000
Subject: [PATCH] fix(lib): add missing -1 return documentation for Array
 indexOf/lastIndexOf

The Array interface's indexOf and lastIndexOf JSDoc descriptions are
missing the ", or -1 if it is not present" clause that is consistently
present in ReadonlyArray and all TypedArray interfaces.
---
 src/lib/es5.d.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index ced21a6d72af1..de8b00018e8d5 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -1205,13 +1205,13 @@ interface ReadonlyArray<T> {
      */
     slice(start?: number, end?: number): T[];
     /**
-     * Returns the index of the first occurrence of a value in an array.
+     * Returns the index of the first occurrence of a value in an array, or -1 if it is not present.
      * @param searchElement The value to locate in the array.
      * @param fromIndex The array index at which to begin the search. If fromIndex is omitted, the search starts at index 0.
      */
     indexOf(searchElement: T, fromIndex?: number): number;
     /**
-     * Returns the index of the last occurrence of a specified value in an array.
+     * Returns the index of the last occurrence of a specified value in an array, or -1 if it is not present.
      * @param searchElement The value to locate in the array.
      * @param fromIndex The array index at which to begin the search. If fromIndex is omitted, the search starts at the last index in the array.
      */