@soleil-se/build-app/rollup/plugins/bundleSize.js

Script for building WebApps, RESTApps and Widgets with Svelte in Sitevision.

import { basename } from 'path';
import { gzipSizeSync } from 'gzip-size';
import prettyBytes from 'pretty-bytes';
import chalk from 'chalk';

import { getTimestamp } from '@soleil-se/build-utils/log';

export default function bundleSize() {
  return {
    name: 'rollup-plugin-bundle-size',
    generateBundle({ file }, bundle) {
      const asset = basename(file);
      const { code } = bundle[asset];

      const original = prettyBytes(code.length);
      const gzipped = prettyBytes(gzipSizeSync(code));

      console.log(getTimestamp(), `${chalk.green('Created bundle')} ${file}: ${chalk.yellow(original)} → ${chalk.greenBright(gzipped)} (gzip)`);
    },
  };
}