fix: avoid unnecessary source map rewriting for files without directives

[godgivemegift]

🔧 Fix: Resolve Nuxt DevTools element selection conflict

Problem

The plugin was rewriting source code for all files, even those without preprocessor directives. This caused conflicts with vite-plugin-vue-tracer, breaking the source maps required for Nuxt DevTools element selection functionality.

Solution

Added hasDirective check in the transform method to skip processing when no preprocessor directives are found in the file.

Changes

• Added directive detection after lexical analysis
• Skip transformation for files without #if, #define, #message, or other directives
• Preserve source map integrity for Nuxt DevTools compatibility

Code Changes

// src/core/context/index.ts:79
const hasDirective = tokens.some(token => token.type !== 'code')
if (!hasDirective)
  return

Benefits

• ✅ Fixes Nuxt DevTools element selection functionality
• ✅ Improves performance by avoiding unnecessary processing
• ✅ Maintains backward compatibility
• ✅ Preserves source maps for debugging tools

Testing

• Test in Nuxt project with DevTools enabled
• Verify element selection works correctly
• Confirm no regression in directive processing

Related

Fixes compatibility issues with Nuxt DevTools and other source map dependent tools.