From a964e5bc70f0562d6ebe01751cfe2a45b622afdc Mon Sep 17 00:00:00 2001
From: Tom Boothman <50199571+tom-boothman@users.noreply.github.com>
Date: Wed, 11 Aug 2021 18:11:53 +0100
Subject: [PATCH] Remove _ prefix as it isn't allowed by npm config (#153)

---
 util.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util.js b/util.js
index ff244f4..b9334f5 100644
--- a/util.js
+++ b/util.js
@@ -61,7 +61,7 @@ function urlTemplate (opts) {
 }
 
 function getEnvPrefix (pkgName) {
-  return 'npm_config_' + (pkgName || '').replace(/[^a-zA-Z0-9]/g, '_')
+  return 'npm_config_' + (pkgName || '').replace(/[^a-zA-Z0-9]/g, '_').replace(/^_/, '')
 }
 
 function getHostMirrorUrl (opts) {