extra check for undefined in schema.items (GitbookIO#250)

Author: scazan

packages/react-openapi/src/OpenAPISchema.tsx

@@ -233,7 +233,8 @@ function getSchemaProperties(schema: OpenAPIV3.SchemaObject): null | OpenAPISche
  }, [] as OpenAPISchemaPropertyEntry[]);
  }
 
- if (schema.type === 'array') {
+ // check array AND schema.items as this is sometimes null despite what the type indicates
+ if (schema.type === 'array' && !!schema.items) {
  const items = noReference(schema.items);
  const itemProperties = getSchemaProperties(items);
  if (itemProperties) {
@@ -352,7 +353,8 @@ function getSchemaTitle(
 
  if (schema.enum) {
  type = 'enum';
- } else if (schema.type === 'array') {
+ // check array AND schema.items as this is sometimes null despite what the type indicates
+ } else if (schema.type === 'array' && !!schema.items) {
  type = `array of ${getSchemaTitle(noReference(schema.items))}`;
  } else if (schema.type || schema.properties) {
  type = schema.type ?? 'object';