release: 0.12.0

[fi3ework]

Summary

Release 0.12.0 from the latest main. It bumps the ten published packages together, leaving the private @rstest/browser-ui excluded as configured. Changes since 0.11.12:

• Core: the programmatic API is rewritten around createRstest (listing tests, watch mode with browser projects, config file dependencies), vmThreads and vmForks pools are added, reused forks support RSS memory limits, virtual setup files are supported, and automatic prebundle is enabled by default.
• Breaking: public result types are unified with reporter types, tests are listed through the public createRstest API, and exact file filters are expressed with quotes.
• Playwright: config can be provided via extends, and assertion timeouts are configurable.
• Coverage: V8 preserves template counters and implicit else hits.

@rstest/core peer ranges at the 0.12 boundary:

• Adapters, @rstest/browser-react, @rstest/coverage-istanbul, and @rstest/coverage-v8 move from ^0.11.x to ^0.12.0, matching every previous minor release, where the published peer tracked the same core minor (^0.10.0 at 0.10.0, ^0.11.0 at 0.11.0).
• @rstest/playwright replaces the temporary workspace:^ marker with ^0.12.0.
• @rstest/browser keeps its exact workspace:* peer.

Related Links

• v0.11.12...release/0.12.0

Checklist

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

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-17T07:36:54.700323Z	4021db3	New commits

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 53561cd783

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 4021db379d

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

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• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

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[github-actions]

Rsdoctor Bundle Diff Analysis

Found 13 projects in monorepo, 1 project with changes.

📊 Quick Summary

Project	Total Size	Change
adapter-rspack	12.4 KB	0
adapter-rsbuild	6.1 KB	0
browser	1.1 MB	0
browser-react	6.4 KB	0
coverage-v8	82.2 KB	0
coverage-istanbul	20.1 KB	0
playwright	53.0 KB	0
adapter-rslib	51.1 KB	0
browser/client	79.6 KB	0
core/browser	645.2 KB	0
core/main	2.0 MB	-12.0 B (-0.0%)
vscode/extension	1.3 MB	0
vscode/worker	18.4 KB	0

📋 Detailed Reports (Click to expand)

📁 core/main

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

📌 Baseline Commit: de9d6c422a | PR: #1855

Metric	Current	Baseline	Change
📊 Total Size	2.0 MB	2.0 MB	-12.0 B (-0.0%)
📄 JavaScript	1.6 MB	1.6 MB	-12.0 B (-0.0%)
🎨 CSS	0 B	0 B	0
🌐 HTML	0 B	0 B	0
📁 Other Assets	440.3 KB	440.3 KB	0

📦 Download Diff Report: core/main Bundle Diff

Generated by Rsdoctor GitHub Action