Estructura inicial del proyecto

backend/node_modules/mongoose/lib/error/parallelSave.js

@@ -0,0 +1,33 @@
+'use strict';
+
+/*!
+ * Module dependencies.
+ */
+
+const MongooseError = require('./mongooseError');
+
+
+/**
+ * ParallelSave Error constructor.
+ *
+ * @param {Document} doc
+ * @api private
+ */
+
+class ParallelSaveError extends MongooseError {
+
+  constructor(doc) {
+    const msg = 'Can\'t save() the same doc multiple times in parallel. Document: ';
+    super(msg + doc._doc._id);
+  }
+}
+
+Object.defineProperty(ParallelSaveError.prototype, 'name', {
+  value: 'ParallelSaveError'
+});
+
+/*!
+ * exports
+ */
+
+module.exports = ParallelSaveError;