Add bundle size monitoring with size-limit

[fwal]

Summary

This PR adds automated bundle size monitoring to the project using size-limit. A GitHub Actions workflow will now check bundle sizes on pull requests to help prevent unintended size regressions.

Key Changes

• Added size-limit configuration (.size-limit.json): Defines bundle size limits for all four packages:

  • effect-firebase
  • @effect-firebase/admin
  • @effect-firebase/client
  • @effect-firebase/mock
  • Each entry specifies the entry point and external dependencies to ignore in size calculations

• Added GitHub Actions workflow (.github/workflows/size.yml): Automatically runs on pull requests to main and next branches

  • Uses size-limit-action to check bundle sizes
  • Reports results directly as PR comments
  • Configured to skip the build step (assumes pre-built artifacts)

• Updated package.json:

  • Added size npm script that runs size-limit
  • Added size-limit and @size-limit/preset-small-lib as dev dependencies

Implementation Details

• The workflow uses pnpm for package management and respects the .nvmrc Node version specification
• External dependencies are properly ignored in size calculations to focus on the actual library code
• The action has write permissions to pull requests to post size comparison comments

https://claude.ai/code/session_01PSFXZZ7dMnxFc9ofxTDt4u

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[nx-cloud]

View your CI Pipeline Execution ↗ for commit b647f5f

Command	Status	Duration	Result
nx affected -t lint test build	✅ Succeeded	52s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-05-22 12:49:59 UTC