From b22a0355aa36507cf0c5cb7fee021cf5a7fd6db1 Mon Sep 17 00:00:00 2001
From: Rhys Arkins <rhys@arkins.net>
Date: Wed, 7 Apr 2021 09:55:22 +0200
Subject: [PATCH] refactor(config): explicit migration string check

---
 lib/config/migration.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/config/migration.ts b/lib/config/migration.ts
index 64cbd52c81..aa109e44fe 100644
--- a/lib/config/migration.ts
+++ b/lib/config/migration.ts
@@ -209,7 +209,9 @@ export function migrateConfig(
         }
       } else if (key === 'ignoreNpmrcFile') {
         delete migratedConfig.ignoreNpmrcFile;
-        migratedConfig.npmrc ||= '';
+        if (!is.string(migratedConfig.npmrc)) {
+          migratedConfig.npmrc = '';
+        }
       } else if (
         key === 'branchName' &&
         is.string(val) &&
-- 
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