Description

When using tsup's watch mode with an outDir that points to a location outside the current directory (e.g., ../../dist), file changes are not detected and the rebuild is not triggered. This PR fixes the issue by improving the path comparison logic in the watch mode.

Problem

The current implementation uses glob patterns to check if a file should be ignored, which doesn't handle external paths correctly. This leads to watch mode failing to detect changes when outDir is outside the current directory.

Solution

• Convert all paths to absolute paths before comparison
• Replace glob-based ignore check with direct path comparison using startsWith
• Ensure consistent path handling for both local and external directories

Test Cases

1. Watch mode with local outDir (./dist):

   export default defineConfig({
     outDir: 'dist',
     watch: true
   })

   ✅ Works as expected

2. Watch mode with external outDir (../../dist):

   export default defineConfig({
     outDir: '../../dist',
     watch: true
   })

   ✅ Now works correctly

Breaking Changes

None. This is a bug fix that maintains backward compatibility.