is-only-optional: Read optional status from shrinkwrap when we have to

npm · Apr 12, 2018 · 9dea95e · 9dea95e
1 parent b3f98d8
commit 9dea95e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/install/is-only-optional.js b/lib/install/is-only-optional.js
@@ -11,8 +11,9 @@ function isOptional (node, seen) {
     return false
   }
   seen.add(node)
-
+  const swOptional = node.fromShrinkwrap && node.package._optional
   return node.requiredBy.every(function (req) {
+    if (req.fakeChild && swOptional) return true
     return isOptDep(req, node.package.name) || isOptional(req, seen)
   })
 }