Question 1

How to set up bundlesize with GitHub Actions?

Accepted Answer

Bundlesize doesn't natively support GitHub Actions, but you can use it by manually setting the required environment variables like CI_REPO_OWNER and CI_COMMIT_SHA. Refer to the 'Using a different CI?' section in the README for guidance, but expect more configuration work compared to supported CIs.

Question 2

Bundlesize vs size-limit: which is better for webpack projects?

Accepted Answer

Bundlesize is simpler and checks existing file sizes with configurable compression, while size-limit builds your files with webpack for more accurate analysis. Choose Bundlesize if you only need size enforcement; opt for size-limit if you want insights into dependencies and bundling optimizations.

Question 3

How to configure bundlesize for a React app with code splitting?

Accepted Answer

Use glob patterns in your configuration to match dynamic chunk files, e.g., 'build/**/*.chunk.js'. Set maxSize limits per file type and ensure compression matches your deployment—like gzip for typical setups—to catch regressions in split bundles.

Question 4

Why is my bundlesize check failing in CI with GitHub status?

Accepted Answer

Common issues include incorrect file paths in glob patterns, missing or expired BUNDLESIZE_GITHUB_TOKEN environment variable, or bundle sizes exceeding the configured maxSize. Double-check your configuration and ensure the token has repo:status scope permissions.

Question 5

Can bundlesize work with Brotli compression for all files?

Accepted Answer

Yes, you can specify 'compression': 'brotli' for each file in the configuration array. This is useful if your server uses Brotli, as it provides more accurate size comparisons than default gzip, but you need to set it per file.

Question 6

How to automate the GitHub token setup for bundlesize?

Accepted Answer

Currently, automation isn't built-in; you must manually obtain the token via OAuth and add it as an environment variable in your CI. The TODO list mentions plans to automate this, but for now, it's a manual step that can slow down initial setup.

Bundle Size

What is Bundle Size?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions