fix(cli): add CJS/MJS config file tests and improve catch comment

Author: kazupon

packages/cli/src/__tests__/resolve-vite-config.spec.ts

@@ -1,17 +1,18 @@
 import fs from 'node:fs';
+import { mkdtempSync } from 'node:fs';
+import { tmpdir } from 'node:os';
 import path from 'node:path';
 
 import { afterEach, beforeEach, describe, expect, it } from 'vitest';
-import { mkdtempSync } from 'node:fs';
-import { tmpdir } from 'node:os';
 
 import { findViteConfigUp } from '../resolve-vite-config';
 
 describe('findViteConfigUp', () => {
   let tempDir: string;
 
   beforeEach(() => {
-    tempDir = mkdtempSync(path.join(tmpdir(), 'vite-config-test-'));
+    // Resolve symlinks (macOS /var -> /private/var) to match path.resolve behavior
+    tempDir = fs.realpathSync(mkdtempSync(path.join(tmpdir(), 'vite-config-test-')));
   });
 
   afterEach(() => {
@@ -89,4 +90,31 @@ describe('findViteConfigUp', () => {
     const result = findViteConfigUp(subDir, tempDir);
     expect(result).toBe(path.join(tempDir, 'vite.config.mts'));
   });
+
+  it('should find .cjs config files', () => {
+    const subDir = path.join(tempDir, 'packages', 'my-lib');
+    fs.mkdirSync(subDir, { recursive: true });
+    fs.writeFileSync(path.join(tempDir, 'vite.config.cjs'), '');
+
+    const result = findViteConfigUp(subDir, tempDir);
+    expect(result).toBe(path.join(tempDir, 'vite.config.cjs'));
+  });
+
+  it('should find .cts config files', () => {
+    const subDir = path.join(tempDir, 'packages', 'my-lib');
+    fs.mkdirSync(subDir, { recursive: true });
+    fs.writeFileSync(path.join(tempDir, 'vite.config.cts'), '');
+
+    const result = findViteConfigUp(subDir, tempDir);
+    expect(result).toBe(path.join(tempDir, 'vite.config.cts'));
+  });
+
+  it('should find .mjs config files', () => {
+    const subDir = path.join(tempDir, 'packages', 'my-lib');
+    fs.mkdirSync(subDir, { recursive: true });
+    fs.writeFileSync(path.join(tempDir, 'vite.config.mjs'), '');
+
+    const result = findViteConfigUp(subDir, tempDir);
+    expect(result).toBe(path.join(tempDir, 'vite.config.mjs'));
+  });
 });

packages/cli/src/resolve-vite-config.ts

@@ -26,7 +26,7 @@ export function findViteConfigUp(startDir: string, stopDir: string): string | un
       }
     }
     const parent = path.dirname(dir);
-    if (parent === dir || !dir.startsWith(stop)) {
+    if (parent === dir || !parent.startsWith(stop)) {
       break;
     }
     dir = parent;
@@ -56,7 +56,7 @@ function findWorkspaceRoot(startDir: string): string | undefined {
           return dir;
         }
       } catch {
-        // ignore
+        // Skip malformed package.json and continue searching parent directories
       }
     }
     if (fs.existsSync(path.join(dir, 'lerna.json'))) {