From d6b134fd9005d911343831270615f80dfead7e3d Mon Sep 17 00:00:00 2001
From: Mickael Jeanroy <mickael.jeanroy@gmail.com>
Date: Sat, 29 Aug 2020 00:10:02 +0200
Subject: [PATCH] fix: fix package spec parsing during cache add process

Close #1734

PR-URL: https://github.com/npm/cli/pull/1738
Credit: @mjeanroy
Close: #1738
Reviewed-by: @isaacs

EDIT(@isaacs): Removed test, pending full test coverage of lib/cache.js
---
 lib/cache.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/cache.js b/lib/cache.js
index a47665c1ef113..3a4681b2af107 100644
--- a/lib/cache.js
+++ b/lib/cache.js
@@ -80,7 +80,7 @@ const add = async (args, where) => {
     '    npm cache add <folder>\n'
   log.silly('cache add', 'args', args)
   const spec = args[0] +
-    (args[1] === undefined || args[1] === null ? `@${args[1]}` : '')
+    (args[1] === undefined || args[1] === null ? '' : `@${args[1]}`)
 
   log.verbose('cache add', 'spec', spec)
   if (!spec) {