fix(utils): 重构包版本检查逻辑并添加错误处理

- 引入 tryFlatten 函数以简化错误处理
- 优化 checkPkgVersion 函数，增加错误处理逻辑
- 更新单元测试，增加对错误情况的测试

Author: cloudcome

src/utils.ts

@@ -1,6 +1,7 @@
 import { type ExecOptions, exec } from 'node:child_process';
 import fs from 'node:fs';
 import path from 'node:path/posix';
+import { tryFlatten } from 'try-flatten';
 import type { PkgMeta } from './types';
 
 export function isDirectory(p: string): boolean {
@@ -33,12 +34,14 @@ export async function checkPkgVersion(pkg: PkgMeta) {
   const url = new URL(pkg.registry || 'https://registry.npmjs.org');
   url.pathname = path.join(pkg.name, pkg.distTag || 'latest');
 
-  const resp = await fetch(url.toString());
+  const [err1, resp] = await tryFlatten(fetch(url.toString()));
+  if (err1) return '';
 
   if (!resp.ok) return '';
   if (!resp.headers.get('content-type')?.includes('application/json')) return '';
 
-  const { version } = (await resp.json()) as { version?: string };
+  const [err2, json] = await tryFlatten<{ version?: string }>(resp.json());
+  if (err2) return '';
 
-  return version || '';
+  return json.version || '';
 }

test/utils.test.ts

@@ -80,35 +80,19 @@ describe('命令执行', () => {
 });
 
 describe('包版本检查', () => {
-  it('应该从 npm registry 返回包版本', async () => {
-    const mockResponse = { version: '1.2.3' };
-    const mockFetch = vi.fn().mockResolvedValue({
-      json: () => Promise.resolve(mockResponse),
-    });
-    vi.stubGlobal('fetch', mockFetch);
-
+  it('应该从 npm registry 返回包版本', { timeout: 30 * 1000 }, async () => {
     const version = await checkPkgVersion({
-      name: 'test-package',
-      distTag: 'xxx',
-      registry: 'https://registry.yyy.org',
+      name: 'v2c',
     });
 
-    expect(version).toBe('1.2.3');
-    expect(mockFetch).toHaveBeenCalledWith('https://registry.yyy.org/test-package/xxx');
+    expect(version).toBe('1.0.0');
   });
 
-  it('当未提供 distTag 和 registry 时应该使用默认值', async () => {
-    const mockResponse = { version: '1.0.0' };
-    const mockFetch = vi.fn().mockResolvedValue({
-      json: () => Promise.resolve(mockResponse),
-    });
-    vi.stubGlobal('fetch', mockFetch);
-
+  it('不存在的包应该返回空字符串', { timeout: 30 * 1000 }, async () => {
     const version = await checkPkgVersion({
-      name: 'test-package',
+      name: 'v2c-not-exist',
     });
 
-    expect(version).toBe('1.0.0');
-    expect(mockFetch).toHaveBeenCalledWith('https://registry.npmjs.org/test-package/latest');
+    expect(version).toBe('');
   });
 });