bump node types and use ??=

Author: paula-stacho

package-lock.json

@@ -55,7 +55,7 @@
   "devDependencies": {
     "@types/json-schema": "^7.0.15",
     "@types/mocha": "^10.0.1",
-    "@types/node": "^18.11.18",
+    "@types/node": "^22.10.7",
     "@types/reservoir": "^0.1.0",
     "@types/sinon": "^17.0.3",
     "@typescript-eslint/eslint-plugin": "^5.47.1",

package.json

@@ -34,17 +34,14 @@ export class InternalSchemaBasedAccessor implements SchemaAccessor {
   }
 
   async getStandardJsonSchema(options: Options = {}): Promise<StandardJSONSchema> {
-    if (this.standardJSONSchema) return this.standardJSONSchema;
-    return this.standardJSONSchema = await convertors.internalSchemaToStandard(this.internalSchema, options);
+    return this.standardJSONSchema ??= await convertors.internalSchemaToStandard(this.internalSchema, options);
   }
 
   async getMongoDBJsonSchema(options: Options = {}): Promise<MongoDBJSONSchema> {
-    if (this.mongodbJSONSchema) return this.mongodbJSONSchema;
-    return this.mongodbJSONSchema = await convertors.internalSchemaToMongoDB(this.internalSchema, options);
+    return this.mongodbJSONSchema ??= await convertors.internalSchemaToMongoDB(this.internalSchema, options);
   }
 
   async getExtendedJsonSchema(options: Options = {}): Promise<ExtendedJSONSchema> {
-    if (this.extendedJSONSchema) return this.extendedJSONSchema;
-    return this.extendedJSONSchema = await convertors.internalSchemaToExtended(this.internalSchema, options);
+    return this.extendedJSONSchema ??= await convertors.internalSchemaToExtended(this.internalSchema, options);
   }
 }