rollup-plugin-bundle-stats

rollup-plugin-bundle-stats

Demo: Compare multiple builds, Single build

BundleStats rollup plugin

Analyze rollup stats(bundle size, assets, modules, packages) and compare the results between different builds.

- Bundle size and totals by file type(css, js, img, etc)
- Cache invalidation, Initial JS/CSS and other bundle specific metrics
- Assets report (entrypoint, initial, types, changed, delta)
- Modules report (changed, delta, chunks, duplicate count and percentage)
- Packages report (count, duplicate, changed, delta)
:star: Side by side comparison for multiple builds

Table of Contents

• Install
• Configure
• Compare mode
• Other packages
• Related projects

Install

npm install --dev rollup-plugin-bundle-stats

or

yarn add --dev rollup-plugin-bundle-stats

Configure

// rollup.config.js
const { bundleStats } = require('rollup-plugin-bundle-stats');

module.exports = {
  ...,
  plugins: [
    bundleStats()
  ]
}

Options

• compare - use local saved stats for comparison (default true).
• baseline - save current webpack stats as baseline (default false).
• html - output html report (default true).
• json - output json report (default false).
• outDir - output directory relative to rollup output director output.path (default '').
• silent - stop logging info and only log warning and error (default false).

Compare mode

In compare mode, the metrics are compared against an existing(node_modules/.cache/bundle-stats/baseline.json) rollup stats file(baseline). To generate the baseline webpack stats, set BUNDLE_STATS_BASELINE environmental variable to true or set BundleStatsWebpackPlugin baseline option to true:

# Checkout to the branch/tag/commit where you want to generate the baseline
$ git checkout master

# Build your application with BUNDLE_STATS_BASELINE environmental variable
$ BUNDLE_STATS_BASELINE=true npm run build

# Checkout to the working branch/tag/commit
$ git checkout MY_FEATURE_BRANCH

# Build your application
$ npm run build

The option can be disabled by setting BundleStatsWebpackPlugin compare option to false.

Other packages

bundle-stats

CLI to generate bundle stats report.

gatsby-plugin-bundle-stats

Gatsby plugin for bundle-stats.

next-plugin-bundle-stats

Next.js plugin for bundle-stats.

Related projects

:cyclone: relative-ci.com

In-depth webpack bundle analysis and monitoring

RelativeCI automates webpack bundle analysis, monitoring, and alerting so you can identify and fix bundle regressions before shipping to production:

• :crystal_ball: Analyze webpack bundle stats on every build
• :chart_with_upwards_trend: Monitor webpack bundle stats changes and identify tendencies over extended periods
• :bell: Get notified via GitHub Checks, GitHub Pull Request comments, and Slack notifications
• :hammer: Support for all major CI services (CircleCI, GitHub Actions, Gitlab CI, Jenkins, Travis CI)
• :two_hearts: Always free for Open Source

Try for free

:first_quarter_moon: relative-ci/compare

Standalone web application to compare Webpack/Lighthouse/Browsertime stats.

Compare bundle stats

:zap: bundle-stats-action

Github Action that generates bundle-stats reports.