chore: scrub and name prefix exclusion testing

FUTURE_COPYBARA_INTEGRATE_REVIEW=#1090 from googleapis:release-please--branches--main--components--genai bbf62d2
PiperOrigin-RevId: 833889208

Author: wanlin31

sdk-samples/copy_api_error.ts

@@ -0,0 +1,52 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+import {GoogleGenAI} from '@google/genai';
+
+const GEMINI_API_KEY = process.env.GEMINI_API_KEY;
+const GOOGLE_CLOUD_PROJECT = process.env.GOOGLE_CLOUD_PROJECT;
+const GOOGLE_CLOUD_LOCATION = process.env.GOOGLE_CLOUD_LOCATION;
+const GOOGLE_GENAI_USE_VERTEXAI = process.env.GOOGLE_GENAI_USE_VERTEXAI;
+
+async function throwApiErrorForMLDev() {
+  const ai = new GoogleGenAI({apiKey: GEMINI_API_KEY});
+  const response = await ai.models.generateContent({
+    model: 'non-existent-model',
+    contents: 'Tell me a story in 300 words?',
+  });
+  console.log('text response: ', response.text);
+}
+
+async function throwApiErrorForVertexAI() {
+  const ai = new GoogleGenAI({
+    vertexai: true,
+    project: GOOGLE_CLOUD_PROJECT,
+    location: GOOGLE_CLOUD_LOCATION,
+  });
+  const response = await ai.models.generateContent({
+    model: 'non-existent-model',
+    contents: 'Tell me a story in 300 words?',
+  });
+
+  console.log('text response: ', response.text);
+}
+
+async function main() {
+  if (GOOGLE_GENAI_USE_VERTEXAI) {
+    await throwApiErrorForVertexAI().catch((e) => {
+      console.error('error name: ', e.name);
+      console.error('error message: ', e.message);
+      console.error('error status: ', e.status);
+    });
+  } else {
+    await throwApiErrorForMLDev().catch((e) => {
+      console.error('error name: ', e.name);
+      console.error('error message: ', e.message);
+      console.error('error status: ', e.status);
+    });
+  }
+}
+
+main();

src/index.ts

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+// Testing
+
 export {BaseUrlParameters, setDefaultBaseUrls} from './_base_url';
 export * from './batches';
 export * from './caches';