Problem

In Vite projects where both src/main.tsx (used for vite serve) and src/index.ts (used for vite build) exist, the MasterCSS Vite plugin currently always picks src/index.ts as the entry due to glob ordering (alphabetical by default).

Solution

This PR introduces a new entryId option for the masterCSS() plugin. It allows users to explicitly define the desired entry point:

masterCSS({
  entryId: process.env.NODE_ENV === 'production' 
    ? 'src/index.ts' 
    : 'src/main.tsx',
})

Usage

No breaking changes. If entryId is not provided, the plugin behavior remains unchanged.