fix(browser): fix @rspack/browser failure after pure esm transformation

[Timeless0911]

Summary

Fixes @rspack/browser failure after pure ESM transformation.

• Renamed rslib.browser.config.mts to rslib.browser.config.ts
• Add a plugin to remove createRequire usages from the code, since createRequire is not available in browser environment.
• Updated packages/rspack-browser/package.json exports to use ./dist/index.js.
• Added explicit extensions to imports in browser E2E tests.

Related links

• refactor!: drop CommonJS build and transition to pure ESM package #12733
• fix(browser): update worker format and add e2e test #12747

Checklist

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

[netlify]

✅ Deploy Preview for rspack-v2 canceled.

Name	Link
🔨 Latest commit	9f89b39
🔍 Latest deploy log	https://app.netlify.com/projects/rspack-v2/deploys/696e00de29aa0d00084c6e77

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 5 projects with changes.

📊 Quick Summary

Project	Total Size	Change
react-10k	5.7 MB	-37.0 B (-0.0%)
react-1k	825.3 KB	-29.0 B (-0.0%)
react-5k	2.7 MB	-28.0 B (-0.0%)
ui-components	2.1 MB	-30.0 B (-0.0%)
rome	985.8 KB	+1.7 KB (0.2%)

📋 Detailed Reports (Click to expand)

📁 react-10k

Path: ../build-tools-performance/cases/react-10k/dist/rsdoctor-data.json

📌 Baseline Commit: 6991b7b596 | PR: #12778

Metric	Current	Baseline	Change
📊 Total Size	5.7 MB	5.7 MB	-37.0 B (-0.0%)
📄 JavaScript	5.7 MB	5.7 MB	-37.0 B (-0.0%)
🎨 CSS	21.0 B	21.0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: react-10k Bundle Diff

📁 react-1k

Path: ../build-tools-performance/cases/react-1k/dist/rsdoctor-data.json

📌 Baseline Commit: 6991b7b596 | PR: #12778

Metric	Current	Baseline	Change
📊 Total Size	825.3 KB	825.4 KB	-29.0 B (-0.0%)
📄 JavaScript	825.3 KB	825.4 KB	-29.0 B (-0.0%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: react-1k Bundle Diff

📁 react-5k

Path: ../build-tools-performance/cases/react-5k/dist/rsdoctor-data.json

📌 Baseline Commit: 6991b7b596 | PR: #12778

Metric	Current	Baseline	Change
📊 Total Size	2.7 MB	2.7 MB	-28.0 B (-0.0%)
📄 JavaScript	2.7 MB	2.7 MB	-28.0 B (-0.0%)
🎨 CSS	21.0 B	21.0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: react-5k Bundle Diff

📁 ui-components

Path: ../build-tools-performance/cases/ui-components/dist/rsdoctor-data.json

📌 Baseline Commit: 6991b7b596 | PR: #12778

Metric	Current	Baseline	Change
📊 Total Size	2.1 MB	2.1 MB	-30.0 B (-0.0%)
📄 JavaScript	2.0 MB	2.0 MB	-30.0 B (-0.0%)
🎨 CSS	83.0 KB	83.0 KB	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: ui-components Bundle Diff

📁 rome

Path: ../build-tools-performance/cases/rome/dist/rsdoctor-data.json

📌 Baseline Commit: 6991b7b596 | PR: #12778

Metric	Current	Baseline	Change
📊 Total Size	985.8 KB	984.2 KB	+1.7 KB (0.2%)
📄 JavaScript	985.8 KB	984.2 KB	+1.7 KB (0.2%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	0 B	0 B	0

📦 Download Diff Report: rome Bundle Diff

Generated by Rsdoctor GitHub Action

[github-actions]

📦 Binary Size-limit

Comparing 9f89b39 to fix: sort css by sourceorder, esm import comes first (#12778) by Fy

🎉 Size decreased by 322.13KB from 47.99MB to 47.68MB (⬇️0.66%)

[codspeed-hq]

Merging this PR will not alter performance

✅ 16 untouched benchmarks
⏩ 1 skipped benchmark¹

---

_{Comparing fix/rspack-browser-esm (9f89b39) with v2 (f81f16e)}

Footnotes

1. 1 benchmark was skipped, so the baseline result was used instead. If it was deleted from the codebase, click here and archive it to remove it from the performance reports. ↩