1 files changed, 3 insertions, 2 deletions
diff --git a/tools/node_modules/eslint/node_modules/ajv/lib/ajv.js b/tools/node_modules/eslint/node_modules/ajv/lib/ajv.js
index 4740eb6a7d..9f16723aa8 100644
--- a/tools/node_modules/eslint/node_modules/ajv/lib/ajv.js
+++ b/tools/node_modules/eslint/node_modules/ajv/lib/ajv.js
@@ -70,8 +70,9 @@ function Ajv(opts) {
   this._metaOpts = getMetaSchemaOptions(this);
 
   if (opts.formats) addInitialFormats(this);
-  addDraft6MetaSchema(this);
+  addDefaultMetaSchema(this);
   if (typeof opts.meta == 'object') this.addMetaSchema(opts.meta);
+  if (opts.nullable) this.addKeyword('nullable', {metaSchema: {const: true}});
   addInitialSchemas(this);
 }
 
@@ -443,7 +444,7 @@ function addFormat(name, format) {
 }
 
 
-function addDraft6MetaSchema(self) {
+function addDefaultMetaSchema(self) {
   var $dataSchema;
   if (self._opts.$data) {
     $dataSchema = require('./refs/data.json');