1 files changed, 0 insertions, 20 deletions
diff --git a/deps/node/deps/npm/lib/install/is-only-optional.js b/deps/node/deps/npm/lib/install/is-only-optional.js
deleted file mode 100644
index f1b73157..00000000
--- a/deps/node/deps/npm/lib/install/is-only-optional.js
+++ /dev/null
@@ -1,20 +0,0 @@
-'use strict'
-module.exports = isOptional
-
-const isOptDep = require('./is-opt-dep.js')
-
-function isOptional (node, seen) {
-  if (!seen) seen = new Set()
-  // If a node is not required by anything, then we've reached
-  // the top level package.
-  if (seen.has(node) || node.requiredBy.length === 0) {
-    return false
-  }
-  seen = new Set(seen)
-  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)
-  })
-}