From c3a543e589a3ac7876df0fc6927f24d74065a267 Mon Sep 17 00:00:00 2001
From: Gar <gar+gh@danger.computer>
Date: Mon, 1 May 2023 10:21:42 -0700
Subject: [PATCH] fix: check lower case extensions in windows (#100)

Closes https://github.com/npm/node-which/issues/57
---
 lib/index.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index 8de3388..52e9ea6 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -29,8 +29,13 @@ const getPathInfo = (cmd, {
   ]
 
   if (isWindows) {
-    const pathExtExe = optPathExt || ['.EXE', '.CMD', '.BAT', '.COM'].join(optDelimiter)
-    const pathExt = pathExtExe.split(optDelimiter)
+    const pathExtExe = optPathExt ||
+      ['.EXE', '.CMD', '.BAT', '.COM'].join(optDelimiter)
+    const pathExt = pathExtExe.split(optDelimiter).reduce((acc, item) => {
+      acc.push(item)
+      acc.push(item.toLowerCase())
+      return acc
+    }, [])
     if (cmd.includes('.') && pathExt[0] !== '') {
       pathExt.unshift('')
     }