From 4b0dbbd3a1a634438fcada35dfc51a265cf9b748 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Sat, 22 Aug 2026 14:27:58 +0000
Subject: [PATCH] fix(@stdlib/blas/ext/find-index): supply default `fromIndex`
 to `gfindIndex`

The job "Run JavaScript tests" (run_affected_tests) and the macOS
Node.js v16 test job failed on develop with `TypeError: Cannot read
properties of undefined (reading 'data')` in
`blas/ext/find-index/test/test.assign.js` and `test.main.js`.

Root cause: PR #14478 changed
`@stdlib/blas/ext/base/ndarray/gfind-index` to require a second,
zero-dimensional `fromIndex` ndarray in its `arrays` argument. This
package registers `gfindIndex` directly as the `default` entry of a
`@stdlib/ndarray/base/unary-reduce-strided1d-dispatch-by-factory`
table, and that shared dispatch machinery always invokes table
functions with a single-element `arrays` array containing only the
input view, so `arrays[1]` was `undefined`.

This commit wraps `gfindIndex` in a local `indexOf` function that
supplies a constant zero-dimensional `fromIndex` ndarray (value `0`),
restoring the pre-#14478 default of searching from the start of the
array, without changing the shared dispatch factory or the
`gfind-index` kernel.

Ref: https://github.com/stdlib-js/stdlib/actions/runs/32550930877
---
 .../@stdlib/blas/ext/find-index/lib/base.js   | 24 ++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/lib/node_modules/@stdlib/blas/ext/find-index/lib/base.js b/lib/node_modules/@stdlib/blas/ext/find-index/lib/base.js
index 7be8c1bf06a8..1afc95e4e658 100644
--- a/lib/node_modules/@stdlib/blas/ext/find-index/lib/base.js
+++ b/lib/node_modules/@stdlib/blas/ext/find-index/lib/base.js
@@ -21,6 +21,7 @@
 // MODULES //
 
 var dtypes = require( '@stdlib/ndarray/dtypes' );
+var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
 var gfindIndex = require( '@stdlib/blas/ext/base/ndarray/gfind-index' );
 var factory = require( '@stdlib/ndarray/base/unary-reduce-strided1d-dispatch-by-factory' );
 
@@ -33,8 +34,14 @@ var policies = {
 	'output': 'integer_index_and_generic',
 	'casting': 'none'
 };
+
+// Zero-dimensional ndarray specifying the default starting search index expected by `gfindIndex`:
+var FROM_INDEX = scalar2ndarray( 0, {
+	'dtype': 'generic'
+});
+
 var table = {
-	'default': gfindIndex
+	'default': indexOf
 };
 
 
@@ -88,6 +95,21 @@ var table = {
 var findIndex = factory( table, [ idtypes ], odtypes, policies );
 
 
+// FUNCTIONS //
+
+/**
+* Invokes `gfindIndex` with a default starting search index.
+*
+* @private
+* @param {ArrayLikeObject<Object>} arrays - array-like object containing a one-dimensional input ndarray
+* @param {Function} clbk - callback function
+* @returns {integer} index
+*/
+function indexOf( arrays, clbk ) {
+	return gfindIndex( [ arrays[ 0 ], FROM_INDEX ], clbk );
+}
+
+
 // EXPORTS //
 
 module.exports = findIndex;