Show current module being transpiled by the rollup bundler.
npm i rollup-plugin-progress --save-dev
Include the following in the rollup config
import { rollup } from 'rollup';
import progress from 'rollup-plugin-progress';
rollup({
entry: 'main.js',
plugins: [
progress({
clearLine: false // default: true
})
]
}).then( bundle => bundle.write({ dest: 'bundle.js', format: 'iife' }) ); 
