npm and error messages

node_modules/clean-css/lib/optimizer/level-2/restore-with-components.js

@@ -0,0 +1,13 @@
+var compactable = require('./compactable');
+
+function restoreWithComponents(property) {
+  var descriptor = compactable[property.name];
+
+  if (descriptor && descriptor.shorthand) {
+    return descriptor.restore(property, compactable);
+  } else {
+    return property.value;
+  }
+}
+
+module.exports = restoreWithComponents;