fix type error and format

Author: AVGVSTVS96

package/src/lib/resolvers.ts

@@ -144,8 +144,9 @@ export function resolveTheme(themeInput: Theme | Themes): ThemeResult {
       ? `multi-${Object.values(themeInput)
           .map(
             (theme) =>
-              (typeof theme === 'string' ? theme : theme?.name) ||
-              'custom'
+              (typeof theme === 'string'
+                ? theme
+                : (theme as { name?: string })?.name) || 'custom'
           )
           .sort()
           .join('-')}`

package/tests/component.test.tsx

@@ -1,6 +1,9 @@
 import React, { useRef } from 'react';
 import { render, waitFor } from '@testing-library/react';
-import { ShikiHighlighter, createJavaScriptRegexEngine } from '../src/index';
+import {
+  ShikiHighlighter,
+  createJavaScriptRegexEngine,
+} from '../src/index';
 
 // Test fixtures
 const codeSample = 'console.log("Hello World");';
@@ -298,7 +301,7 @@ describe('ShikiHighlighter Component', () => {
 
         const code = shikiContainer?.querySelector('code');
         const spans = code?.querySelectorAll('span');
-        expect(spans && spans.length).toBeGreaterThan(0);
+        expect(spans?.length).toBeGreaterThan(0);
       });
     });
   });

package/tests/hook.test.tsx

@@ -1,6 +1,9 @@
 import { render, waitFor } from '@testing-library/react';
 import { vi } from 'vitest';
-import { useShikiHighlighter, createJavaScriptRegexEngine } from '../src/index';
+import {
+  useShikiHighlighter,
+  createJavaScriptRegexEngine,
+} from '../src/index';
 import type { Language, Theme, Themes } from '../src/lib/types';
 import type { ShikiTransformer } from 'shiki';
 import { throttleHighlighting } from '../src/lib/utils';
@@ -372,7 +375,9 @@ describe('useShikiHighlighter Hook', () => {
         const container = getByTestId('highlighted');
         const pre = container.querySelector('pre');
         // Should have multi-theme CSS variables
-        const spans = container.querySelectorAll('span[style*="--shiki-"]');
+        const spans = container.querySelectorAll(
+          'span[style*="--shiki-"]'
+        );
         expect(spans.length).toBeGreaterThan(0);
         expect(pre).toBeInTheDocument();
       });
@@ -520,12 +525,12 @@ describe('useShikiHighlighter Hook', () => {
         // Verify HTML string contains syntax highlighting elements
         expect(capturedOutput).toContain('style=');
         expect(capturedOutput).toContain('color:');
-        
+
         // Verify rendered DOM has highlighted spans
         const container = getByTestId('output');
         const spans = container.querySelectorAll('span[style*="color"]');
         expect(spans.length).toBeGreaterThan(0);
-        
+
         // Verify the code content is preserved
         expect(container.textContent).toContain('const x = 1;');
       });
@@ -540,7 +545,7 @@ describe('useShikiHighlighter Hook', () => {
           'javascript',
           'github-dark',
           {
-            engine: createJavaScriptRegexEngine()
+            engine: createJavaScriptRegexEngine(),
           }
         );