Automatically parse metadata and set @grants.
With this plugin, @grants for GM_* functions will be added at compile time.
Add the plugin to rollup.config.js:
import userscript from 'rollup-plugin-userscript';
const plugins = [
  // ...
  userscript(meta => meta.replace('process.env.AUTHOR', pkg.author)),
];Import the metadata file with a suffix ?userscript-metadata in your script:
import './meta.js?userscript-metadata';