refactor(utils): remove mixin utilities and update test imports

Removed the mixin utility functions and related type definitions from
the codebase. Updated test file to remove mixin-related imports and
tests, and improved code formatting in data API tests.

移除混入实用程序并更新测试导入

从代码库中删除了混入实用函数和相关类型定义。更新测试文件以
移除混入相关的导入和测试，并改进了数据 API 测试中的代码格式。

Change-Id: I6cba222f10ad5e040b200bfaeea254bb09b44782
Signed-off-by: OhYee <oyohyee@oyohyee.com>

Author: OhYee

src/utils/mixin.ts

@@ -1,19 +1,14 @@
 import { Config } from '../../src/utils/config';
+import { DataAPI, ResourceType } from '../../src/utils/data-api';
 import {
-  AgentRunError,
   HTTPError,
-  ResourceNotExistError,
   ResourceAlreadyExistError,
-  ClientError,
+  ResourceNotExistError,
 } from '../../src/utils/exception';
-import * as model from '../../src/utils/model';
-import { mixin } from '../../src/utils/mixin';
 import {
-  updateObjectProperties,
   listAllResourcesFunction,
-  ResourceBase,
+  updateObjectProperties,
 } from '../../src/utils/resource';
-import { DataAPI, ResourceType } from '../../src/utils/data-api';
 
 describe('utils - config', () => {
   test('config defaults and data/control/devs endpoints and accountId error', () => {
@@ -59,25 +54,6 @@ describe('utils - exception', () => {
   });
 });
 
-
-describe('utils - mixin', () => {
-  test('mixin copies prototype and static properties', () => {
-    class A {
-      static staticA = 1;
-      protoA() { return 'a'; }
-    }
-
-    class B { }
-
-    const Mixed = mixin(A as any, B as any) as any;
-    // static prop copied
-    expect(Mixed.staticA).toBe(1);
-    // prototype method available
-    const inst = new Mixed();
-    expect(typeof inst.protoA).toBe('function');
-  });
-});
-
 describe('utils - resource helpers', () => {
   test('updateObjectProperties only copies data fields', () => {
     const target: any = {};
@@ -91,8 +67,13 @@ describe('utils - resource helpers', () => {
   test('listAllResourcesFunction paginates and dedups', async () => {
     // listAllResourcesFunction uses a pageSize of 50 internally.
     // To exercise pagination we return 50 items on first call and a small last page on second.
-    const firstPage = Array.from({ length: 50 }, (_, i) => ({ uniqIdCallback: () => `${i + 1}` }));
-    const secondPage = [{ uniqIdCallback: () => '50' }, { uniqIdCallback: () => '51' }];
+    const firstPage = Array.from({ length: 50 }, (_, i) => ({
+      uniqIdCallback: () => `${i + 1}`,
+    }));
+    const secondPage = [
+      { uniqIdCallback: () => '50' },
+      { uniqIdCallback: () => '51' },
+    ];
     const pages = [firstPage, secondPage];
     let called = 0;
     const list = async (params?: any) => {
@@ -120,14 +101,29 @@ describe('utils - data-api small surface', () => {
     const cfg = new Config({ token: 'tok', accountId: 'acct' });
     const d = new DataAPI('name', ResourceType.Runtime, cfg, 'ns') as any;
 
-    const r1 = await d.prepareRequest('POST', 'https://example.com/x', { a: 1 }, { H: 'v' });
+    const r1 = await d.prepareRequest(
+      'POST',
+      'https://example.com/x',
+      { a: 1 },
+      { H: 'v' }
+    );
     expect(r1.body).toBeDefined();
     expect(r1.headers['Agentrun-Access-Token']).toBe('tok');
 
-    const r2 = await d.prepareRequest('PUT', 'https://example.com/x', Buffer.from('hi'), {});
+    const r2 = await d.prepareRequest(
+      'PUT',
+      'https://example.com/x',
+      Buffer.from('hi'),
+      {}
+    );
     expect(Buffer.isBuffer(r2.body)).toBe(true);
 
-    const r3 = await d.prepareRequest('PATCH', 'https://example.com/x', 'rawtext', {});
+    const r3 = await d.prepareRequest(
+      'PATCH',
+      'https://example.com/x',
+      'rawtext',
+      {}
+    );
     expect(r3.body).toBe('rawtext');
   });
 });