Merge pull request ferdikoomen#916 from sjoerdmulder/feature/discriminator-cleanup

Small cleanup

Author: ferdikoomen

src/utils/discriminator.ts

@@ -13,18 +13,16 @@ function inverseDictionary(map: Dictionary<string>): Dictionary<string> {
 }
 
 export function findOneOfParentDiscriminator(openApi: OpenApi, parent?: Model): OpenApiDiscriminator | undefined {
-    if (openApi.components) {
+    if (openApi.components && parent) {
         for (const definitionName in openApi.components.schemas) {
             if (openApi.components.schemas.hasOwnProperty(definitionName)) {
                 const schema = openApi.components.schemas[definitionName];
-                if (parent && schema.oneOf?.length && schema.discriminator) {
-                    const isPartOf =
-                        schema.oneOf
-                            .map(definition => definition.$ref && stripNamespace(definition.$ref) === parent.name)
-                            .filter(Boolean).length > 0;
-                    if (isPartOf) {
-                        return schema.discriminator;
-                    }
+                if (
+                    schema.discriminator &&
+                    schema.oneOf?.length &&
+                    schema.oneOf.some(definition => definition.$ref && stripNamespace(definition.$ref) == parent.name)
+                ) {
+                    return schema.discriminator;
                 }
             }
         }