perf(core): split browser runtime vendor chunk

[9aoy]

Summary

• Extract stable assertion and browser-polyfill dependencies from the eager browser runtime into a fully minified vendor chunk while preserving the existing lazy snapshot, fake-timers, and magic-string boundaries.
• Emit the Rspack runtime separately to avoid a circular ESM initialization dependency between the runtime and vendor chunks.
• In same-environment builds, eager browser runtime JS decreases from 553.0 kB to 317.3 kB (-42.6%) and from 103.6 kB to 82.3 kB gzip (-20.6%); total browser runtime gzip decreases from 143.9 kB to 117.9 kB (-18.1%).

Related Links

• perf(core): minify third-party chunks #1624

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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Rsdoctor Bundle Diff Analysis

Found 13 projects in monorepo, 1 project with changes.

📊 Quick Summary

Project	Total Size	Change
adapter-rsbuild	6.1 KB	0
adapter-rslib	26.3 KB	0
adapter-rspack	9.2 KB	0
browser	2.1 MB	0
browser-react	6.4 KB	0
coverage-istanbul	18.8 KB	0
coverage-v8	80.0 KB	0
browser-ui	811.2 KB	0
playwright	47.6 KB	0
core/browser	576.4 KB	📉 -247.4 KB (-30.0%)
core/main	1.7 MB	0
vscode/worker	14.8 KB	0
vscode/extension	47.4 MB	0

📋 Detailed Reports (Click to expand)

📁 core/browser

Path: packages/core/.rsdoctor/browser/rsdoctor-data.json

📌 Baseline Commit: 920421956c | PR: #1624

Metric	Current	Baseline	Change
📊 Total Size	576.4 KB	823.8 KB	-247.4 KB (-30.0%)
📄 JavaScript	435.0 KB	682.3 KB	-247.4 KB (-36.3%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	141.4 KB	141.4 KB	0

📦 Download Diff Report: core/browser Bundle Diff

Generated by Rsdoctor GitHub Action