Add tracking of frontend bundle size stats to CI#13078
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lukasmasuch merged 2 commits intodevelopfrom Nov 21, 2025
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Pull Request Overview
This PR adds automated tracking of frontend bundle size statistics to the CI pipeline. The implementation uses the vite-bundle-analyzer plugin to generate both JSON and HTML reports of the bundle composition during the build process.
- Adds
vite-bundle-analyzerdependency to analyze bundle composition - Configures bundle analysis to generate JSON and HTML output files
- Implements a new CI workflow job to build the frontend with analysis enabled and upload artifacts
Reviewed Changes
Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| frontend/app/package.json | Adds vite-bundle-analyzer@^1.2.3 as a dev dependency |
| frontend/yarn.lock | Lock file update for the new vite-bundle-analyzer package |
| frontend/app/vite.config.ts | Configures bundle analyzer plugin conditionally via ANALYZE_BUNDLE env var, generates JSON and HTML reports, enables sourcemaps when analyzing |
| .github/workflows/pr-preview.yml | Adds new analyze-frontend-bundle job that builds frontend with analysis enabled and uploads resulting artifacts |
Co-authored-by: Copilot <[email protected]>
sfc-gh-bnisco
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Cool, thanks for this!
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Describe your changes
Adds an optional bundle analysis to our vite config. Runs the analysis and uploads the html and raw data to our CI artefacts. As a follow up task, we will also add a dashboard to https://issues.streamlit.app to track the changes in bundle size + PR comments to warn from significant changes similar to how its done with the wheel size.
Contribution License Agreement
By submitting this pull request you agree that all contributions to this project are made under the Apache 2.0 license.