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(
path.resolve('src/meta.js'),
meta => meta
.replace('process.env.VERSION', pkg.version)
.replace('process.env.AUTHOR', pkg.author),
),
];