Update Node_modules

node_modules/mongoose/lib/helpers/schema/applyPlugins.js

@@ -15,13 +15,15 @@ module.exports = function applyPlugins(schema, plugins, options, cacheKey) {
   options = Object.assign({}, options);
   delete options.skipTopLevel;
 
-  for (const path of Object.keys(schema.paths)) {
-    const type = schema.paths[path];
-    if (type.schema != null) {
-      applyPlugins(type.schema, plugins, options, cacheKey);
+  if (options.applyPluginsToChildSchemas !== false) {
+    for (const path of Object.keys(schema.paths)) {
+      const type = schema.paths[path];
+      if (type.schema != null) {
+        applyPlugins(type.schema, plugins, options, cacheKey);
 
-      // Recompile schema because plugins may have changed it, see gh-7572
-      type.caster.prototype.$__setSchema(type.schema);
+        // Recompile schema because plugins may have changed it, see gh-7572
+        type.caster.prototype.$__setSchema(type.schema);
+      }
     }
   }
 
@@ -40,4 +42,4 @@ module.exports = function applyPlugins(schema, plugins, options, cacheKey) {
     applyPlugins(discriminatorSchema, plugins,
       { skipTopLevel: !applyPluginsToDiscriminators }, cacheKey);
   }
-};
+};

node_modules/mongoose/lib/helpers/schema/merge.js

@@ -1,7 +1,7 @@
 'use strict';
 
 module.exports = function merge(s1, s2) {
-  s1.add(s2.obj);
+  s1.add(s2.obj || {});
 
   s1.callQueue = s1.callQueue.concat(s2.callQueue);
   s1.method(s2.methods);