Add showExtentions support for Responses

src/components/Responses/Response.tsx

@@ -12,11 +12,12 @@ export class ResponseView extends React.Component<{ response: ResponseModel }> {
   };
 
   render() {
-    const { headers, type, summary, description, code, expanded, content } = this.props.response;
+    const { extensions, headers, type, summary, description, code, expanded, content } = this.props.response;
     const mimes =
       content === undefined ? [] : content.mediaTypes.filter(mime => mime.schema !== undefined);
 
-    const empty = headers.length === 0 && mimes.length === 0 && !description;
+    const empty = (!extensions || Object.keys(extensions).length === 0) &&
+      headers.length === 0 && mimes.length === 0 && !description;
 
     return (
       <div>

src/components/Responses/ResponseDetails.tsx

@@ -7,15 +7,17 @@ import { DropdownOrLabel } from '../DropdownOrLabel/DropdownOrLabel';
 import { MediaTypesSwitch } from '../MediaTypeSwitch/MediaTypesSwitch';
 import { Schema } from '../Schema';
 
+import { Extensions } from '../Fields/Extensions';
 import { Markdown } from '../Markdown/Markdown';
 import { ResponseHeaders } from './ResponseHeaders';
 
 export class ResponseDetails extends React.PureComponent<{ response: ResponseModel }> {
   render() {
-    const { description, headers, content } = this.props.response;
+    const { description, extensions, headers, content } = this.props.response;
     return (
       <>
         {description && <Markdown source={description} />}
+        <Extensions extensions={extensions} />
         <ResponseHeaders headers={headers} />
         <MediaTypesSwitch content={content} renderDropdown={this.renderDropdown}>
           {({ schema }) => {

src/services/__tests__/models/Response.test.ts

@@ -31,5 +31,12 @@ describe('Models', () => {
       const resp = new ResponseModel(parser, 'default', true, {}, opts);
       expect(resp.type).toEqual('error');
     });
+
+    test('should be error if showExtensions is true', () => {
+      const options = new RedocNormalizedOptions({ showExtensions: true });
+      const resp = new ResponseModel(parser, 'default', true, { 'x-example': {a: 1} } as any, options);
+      expect(Object.keys(resp.extensions).length).toEqual(1);
+      expect(resp.extensions['x-example']).toEqual({a: 1});
+    });
   });
 });

src/services/models/Response.ts

@@ -2,7 +2,10 @@ import { action, observable } from 'mobx';
 
 import { OpenAPIResponse, Referenced } from '../../types';
 
-import { getStatusCodeType } from '../../utils';
+import {
+  extractExtensions,
+  getStatusCodeType,
+} from '../../utils';
 import { OpenAPIParser } from '../OpenAPIParser';
 import { RedocNormalizedOptions } from '../RedocNormalizedOptions';
 import { FieldModel } from './Field';
@@ -19,6 +22,8 @@ export class ResponseModel {
   type: string;
   headers: FieldModel[] = [];
 
+  extensions: Record<string, any>;
+
   constructor(
     parser: OpenAPIParser,
     code: string,
@@ -52,6 +57,10 @@ export class ResponseModel {
         return new FieldModel(parser, { ...header, name }, '', options);
       });
     }
+
+    if (options.showExtensions) {
+      this.extensions = extractExtensions(info, options.showExtensions);
+    }
   }
 
   @action