diff --git a/src/services/AppStore.ts b/src/services/AppStore.ts
index 8ecc3a6d..217b4cf1 100644
--- a/src/services/AppStore.ts
+++ b/src/services/AppStore.ts
@@ -101,6 +101,9 @@ export class AppStore {
   dispose() {
     this.scroll.dispose();
     this.menu.dispose();
+    if (this.search) {
+      this.search.dispose();
+    }
     if (this.disposer != null) {
       this.disposer();
     }
diff --git a/src/services/SearchStore.ts b/src/services/SearchStore.ts
index 669d8d05..ab80b71c 100644
--- a/src/services/SearchStore.ts
+++ b/src/services/SearchStore.ts
@@ -38,6 +38,10 @@ export class SearchStore<T> {
     this.searchWorker.add(title, body, meta);
   }
 
+  dispose() {
+    (this.searchWorker as any).terminate();
+  }
+
   search(q: string) {
     return this.searchWorker.search<T>(q);
   }
diff --git a/src/services/models/MediaContent.ts b/src/services/models/MediaContent.ts
index 32fd770e..c709f42a 100644
--- a/src/services/models/MediaContent.ts
+++ b/src/services/models/MediaContent.ts
@@ -21,7 +21,7 @@ export class MediaContentModel {
    * @param isRequestType needed to know if skipe RO/RW fields in objects
    */
   constructor(
-    public parser: OpenAPIParser,
+    parser: OpenAPIParser,
     info: Dict<OpenAPIMediaType>,
     public isRequestType: boolean,
     options: RedocNormalizedOptions,
diff --git a/src/services/models/Operation.ts b/src/services/models/Operation.ts
index 7e846f28..1aa3a65d 100644
--- a/src/services/models/Operation.ts
+++ b/src/services/models/Operation.ts
@@ -76,7 +76,6 @@ export class OperationModel implements IMenuItem {
   path: string;
   servers: OpenAPIServer[];
   security: SecurityRequirementModel[];
-  codeSamples: Array<OpenAPIXCodeSample | XPayloadSample>;
   extensions: Dict<any>;
 
   constructor(
@@ -104,23 +103,6 @@ export class OperationModel implements IMenuItem {
     this.deprecated = !!operationSpec.deprecated;
     this.operationId = operationSpec.operationId;
     this.path = operationSpec.pathName;
-    this.codeSamples = operationSpec['x-code-samples'] || [];
-
-    const requestBodyContent = this.requestBody && this.requestBody.content;
-    if (requestBodyContent && requestBodyContent.hasSample) {
-      const insertInx = Math.min(this.codeSamples.length, options.payloadSampleIdx);
-
-      this.codeSamples = [
-        ...this.codeSamples.slice(0, insertInx),
-        {
-          lang: 'payload',
-          label: 'Payload',
-          source: '',
-          requestBodyContent,
-        },
-        ...this.codeSamples.slice(insertInx),
-      ];
-    }
 
     const pathInfo = parser.byRef<OpenAPIPath>(
       JsonPointer.compile(['paths', operationSpec.pathName]),
@@ -174,6 +156,30 @@ export class OperationModel implements IMenuItem {
     );
   }
 
+  @memoize
+  get codeSamples() {
+    let samples: Array<OpenAPIXCodeSample | XPayloadSample> =
+      this.operationSpec['x-code-samples'] || [];
+
+    const requestBodyContent = this.requestBody && this.requestBody.content;
+    if (requestBodyContent && requestBodyContent.hasSample) {
+      const insertInx = Math.min(samples.length, this.options.payloadSampleIdx);
+
+      samples = [
+        ...samples.slice(0, insertInx),
+        {
+          lang: 'payload',
+          label: 'Payload',
+          source: '',
+          requestBodyContent,
+        },
+        ...samples.slice(insertInx),
+      ];
+    }
+
+    return samples;
+  }
+
   @memoize
   get parameters() {
     const _parameters = mergeParams(