Summary

• Fixes a bug where route('posts.show', { post: 0 }) would incorrectly wrap params to { post: { post: 0 } } because the truthiness check !params[segments[0].name] treats 0 as falsy
• Replaced with !params.hasOwnProperty(segments[0].name) to check for key presence instead of truthiness
• Added a test case for this scenario

Example

// Route: 'posts/{post}'
route('posts.show', { post: 0 });
// Before: !params['post'] → !0 → true, so params gets wrapped to { post: { post: 0 } }
// After:  !params.hasOwnProperty('post') → false, so params stays as { post: 0 } ✓

Test plan

• New test: can handle an object parameter with a falsy value for the segment name
• All existing tests pass (npx vitest --typecheck)