rollup-plugin-preprocess

Preprocess HTML, JavaScript, and other files with Rollup and Preprocess.

// rollup.config.js
import RollupPluginPreprocess from 'rollup-plugin-preprocess';

// ...

export default {
  // ...
  plugins: [
    RollupPluginPreprocess({
      context: {
        DEBUG: true
      }
    })
  ]
};