Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)

Dependencies/NodeJS/node_modules/npm/lib/utils/validate-lockfile.js

@@ -0,0 +1,29 @@
+// compares the inventory of package items in the tree
+// that is about to be installed (idealTree) with the inventory
+// of items stored in the package-lock file (virtualTree)
+//
+// Returns empty array if no errors found or an array populated
+// with an entry for each validation error found.
+function validateLockfile (virtualTree, idealTree) {
+  const errors = []
+
+  // loops through the inventory of packages resulted by ideal tree,
+  // for each package compares the versions with the version stored in the
+  // package-lock and adds an error to the list in case of mismatches
+  for (const [key, entry] of idealTree.entries()) {
+    const lock = virtualTree.get(key)
+
+    if (!lock) {
+      errors.push(`Missing: ${entry.name}@${entry.version} from lock file`)
+      continue
+    }
+
+    if (entry.version !== lock.version) {
+      errors.push(`Invalid: lock file's ${lock.name}@${lock.version} does ` +
+      `not satisfy ${entry.name}@${entry.version}`)
+    }
+  }
+  return errors
+}
+
+module.exports = validateLockfile