Missing top-level required OpenAPI alternatives

Author: nolannbiron

.changeset/shy-plums-deny.md

@@ -0,0 +1,5 @@
+---
+'@gitbook/react-openapi': patch
+---
+
+Missing top-level required OpenAPI alternatives

packages/react-openapi/src/OpenAPISchema.tsx

@@ -482,7 +482,8 @@ export function getSchemaAlternatives(
     const [type, schemas] = alternatives;
     return mergeAlternatives(
         type,
-        flattenAlternatives(type, schemas, new Set(ancestors).add(schema))
+        flattenAlternatives(type, schemas, new Set(ancestors).add(schema)),
+        schema.required ?? []
     );
 }
 
@@ -492,7 +493,8 @@ export function getSchemaAlternatives(
  */
 function mergeAlternatives(
     alternativeType: AlternativeType,
-    schemasOrRefs: OpenAPIV3.SchemaObject[]
+    schemasOrRefs: OpenAPIV3.SchemaObject[],
+    parentRequired?: string[]
 ): OpenAPIV3.SchemaObject[] | null {
     switch (alternativeType) {
         case 'oneOf': {
@@ -547,6 +549,7 @@ function mergeAlternatives(
                         };
                         latest.required = Array.from(
                             new Set([
+                                ...(Array.isArray(parentRequired) ? parentRequired : []),
                                 ...(Array.isArray(latest.required) ? latest.required : []),
                                 ...(Array.isArray(schemaOrRef.required)
                                     ? schemaOrRef.required