docs: dynamic bundle size badges

[yslpn]

Description

Replace hardcoded bundle sizes with dynamic bundlejs.com badges in README and docs.

Lightweight and optimized - Core library , React components .

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Examples update

Checklist

• I have read the CONTRIBUTING and CODE_OF_CONDUCT docs
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation (if appropriate)

[vercel]

@yslpn is attempting to deploy a commit to the Crowdin Team on Vercel.

A member of the Team first needs to authorize it.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.70%. Comparing base (6bb8983) to head (ef7353e).
⚠️ Report is 251 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2402      +/-   ##
==========================================
- Coverage   77.05%   76.70%   -0.35%     
==========================================
  Files          84      100      +16     
  Lines        2157     2752     +595     
  Branches      555      720     +165     
==========================================
+ Hits         1662     2111     +449     
- Misses        382      513     +131     
- Partials      113      128      +15     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
js-lingui	Ready	Preview	Jan 20, 2026 1:43pm

[timofei-iatsenko]

It seems bundlephobia doesn't take into account dev/prod builds and calculating size with a compiler included:

Interesting, is it possible to do something with that?

Also badge for the react package doesn't work, i reviewed the link and don't see anything suspicious

[timofei-iatsenko]

Just leave it here for reference, this is a main function building the package for stats in bundlephobia

https://github.com/pastelsky/package-build-stats/blob/5db72d0ef7d17e6f21adf5d0a7a1e50f0a23ade2/src/utils/build.utils.ts#L190

[timofei-iatsenko]

So bundlephobia uses rspack with that config to build and generate the stats

We may want to recreate this build locally, and optimize it for bundlephobia. Im not very familiar with rspack, im seeing that they are defining mode: production in the config, but not sure does it mean that NODE_ENV=production is injected.

[timofei-iatsenko]

Yes it is replacing https://rspack.rs/config/mode#production

So we defenetely need to recreate a local build and understand what go wrong. Probably Lingui's compiler optimization doesn't work properly in rspack

[timofei-iatsenko]

I created a local project and investigated how that works, actually compiler is not included in the build, because with a compiler size is 8.7 kB

So it's just a stats on bundlephobia are confusing. And proabably effectiveness of the minifier is slightly diffrent to what esbuild do (in our CI)

[yslpn]

Also badge for the react package doesn't work, i reviewed the link and don't see anything suspicious

It worked when I made a pull request. It seems like it's an internal server error in Bundlephobia.

I think we should switch to bundlejs.com. The service has a more user-friendly UI where you can precisely import the necessary functions and view the bundle size.

Most importantly, it allows excluding React from the bundle calculation.

They use esbuild

I added an example of badges to the PR description.

[yslpn]

It's crazy, but all services and badges have stopped working. I'll move it to draft for now.

ref:
pastelsky/bundlephobia#961
okikio/bundlejs#96

[okikio]

sorry guys that was a glitch on my part, I was fixing some bugs and the badges went down temporarily they are now back up

[yslpn]

sorry guys that was a glitch on my part, I was fixing some bugs and the badges went down temporarily they are now back up

Thank you very much for your work! It works now.