fix: avoid unnecessarily creating object every time calling schema.di…

…scriminator() re: #11855
Automattic · Jun 7, 2022 · 3c46ed0 · 3c46ed0
1 parent f82f7df
commit 3c46ed0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/schema.js b/lib/schema.js
@@ -503,7 +503,7 @@ Schema.prototype.defaultOptions = function(options) {
  */
 
 Schema.prototype.discriminator = function(name, schema) {
-  this._applyDiscriminators = Object.assign({}, this._applyDiscriminators, { [name]: schema });
+  this._applyDiscriminators = Object.assign(this._applyDiscriminators || {}, { [name]: schema });
 
   return this;
 };