chore(deps): update dependency @rstest/core to v0.12.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@rstest/core (source)	0.11.12 → 0.12.2

---

Release Notes

web-infra-dev/rstest (@​rstest/core)

v0.12.2

Compare Source

What's Changed

New Features 🎉

• feat(core): add teardownTimeout option by @​fi3ework in #​1887

Bug Fixes 🐞

• fix(core): fail instead of hanging on a lost IPC envelope by @​fi3ework in #​1885
• fix(core): keep watch silent when a change reaches no test file by @​fi3ework in #​1884
• fix(vscode): use JSON IPC so workers survive VS Code 1.139 by @​fi3ework in #​1888
• fix(core): stop injecting color env into test workers by @​fi3ework in #​1893
• fix(core): expose config helpers from @​rstest/core inside tests by @​fi3ework in #​1896

Document 📖

• docs: document module mocks under isolate: false by @​fi3ework in #​1889

Other Changes

• chore(deps): upgrade pnpm to 12.6 and enable autoDedupe by @​chenjiahan in #​1890
• release: 0.12.2 by @​fi3ework in #​1897

Full Changelog: web-infra-dev/rstest@v0.12.1...v0.12.2

v0.12.1

Compare Source

What's Changed

New Features 🎉

• feat(core): show previous errors for retried tests by @​9aoy in #​1862
• feat(playwright): re-export common Playwright types by @​9aoy in #​1866

Performance 🚀

• perf(core): cache test entry compilation in VM pools by @​Gobd in #​1864

Bug Fixes 🐞

• fix(playwright): make context cleanup idempotent by @​9aoy in #​1859
• fix(core): drain worker IPC writes before async leak checks by @​9aoy in #​1863
• fix(playwright): cap assertions by active test deadline by @​9aoy in #​1865
• fix(core): unify startup, fatal and retryable failure semantics across node and browser by @​fi3ework in #​1849
• fix(core): defer auto-mock module evaluation by @​9aoy in #​1868
• fix(browser): await websocket server teardown by @​9aoy in #​1870
• fix(browser): report test entry load errors as file failures by @​fi3ework in #​1871
• fix(core): infer federation for browser globalSetup and reject setup files without a usable export by @​fi3ework in #​1872
• fix(core, browser): unify CLI signal ownership across node and browser by @​fi3ework in #​1874
• fix(core): finalize runs after executor startup failures by @​fi3ework in #​1879
• fix(core): let the host own cancellation on a process-group SIGINT by @​fi3ework in #​1880

Refactor 🔨

• refactor(core): organize core modules by @​9aoy in #​1877

Document 📖

• docs: add Rstest 0.12 release blog by @​fi3ework in #​1852
• docs: fix skipFull guidance in coverage example and Vitest migration table by @​fi3ework in #​1881

Other Changes

• chore(deps): update all non-major dependencies by @​renovate[bot] in #​1861
• test(browser): verify capped timeout without deadline race by @​9aoy in #​1867
• test(e2e): drain CLI output before assertions by @​9aoy in #​1869
• chore: remove redundant CLAUDE.md symlinks by @​chenjiahan in #​1873
• chore(deps): update rsbuild and rspack by @​renovate[bot] in #​1882

Full Changelog: web-infra-dev/rstest@v0.12.0...main

v0.12.0

Compare Source

Read the Rstest 0.12 announcement for the full story.

Breaking Changes

If you only use the rstest CLI with a config file, no code changes are needed.

JavaScript API

The experimental JavaScript API is redesigned in 0.12, in one step before 1.0. See Rstest instance for the new API.

• runRstest is removed. Create an instance with createRstest instead.
• runCLI moves from @rstest/core to @rstest/core/api.
• TestRunResult has the same shape as the reporter's onTestRunEnd payload, and status: 'pass' | 'fail' | 'error' replaces ok.

Custom reporters

See Reporter API for details.

• onTestRunEnd now receives summary, and unhandledErrors is a required SerializedError[] instead of an optional Error[].
• filterRerunTestPaths is renamed to rerunTestPaths.
• onExit is now also called after a run, list, or merge finishes normally, not only on an abnormal exit.

Peer dependency range

The adapters, @rstest/browser-react, @rstest/coverage-istanbul, @rstest/coverage-v8, and @rstest/playwright now require @rstest/core@^0.12.0. Upgrade all @rstest/* packages together.

Test environment prebundle

testEnvironment.prebundle now defaults to 'auto'. If a test environment behaves differently after the upgrade, set it to false. See Environment prebundle.

Highlights

Rstest 0.12 adds E2E and Module Federation testing support, makes large test suites faster with VM pools and test environment prebundle, and introduces a new JavaScript API.

E2E testing support

@​rstest/playwright integrates Playwright into Rstest, so unit tests, component tests, and E2E tests share one config, one set of commands, and the same reporters. Use definePlaywrightConfig to get the same defaults as Playwright and customize them when needed. See E2E testing.

import { expect, test } from '@rstest/playwright';

test('page title', async ({ page }) => {
  await page.goto('https://example.com');
  await expect(page).toHaveTitle(/Example/);
});

Module Federation testing support

With the @​module-federation/rstest plugin, tests import remote modules the same way a consumer application does. Rstest loads the real exposed modules and resolves shared dependencies, so integration problems between consumer and producer show up in unit tests. It works in Node, jsdom, happy-dom, and browser mode. See Module Federation.

New vmThreads and vmForks pools

The new vmThreads and vmForks pools reuse workers across test files and create a fresh vm.Context for each file. Each file still gets its own JavaScript realm and module graph, while worker startup, dependency resolution, and V8 compilation are shared. This helps most in suites with many jsdom / happy-dom test files.

On a jsdom benchmark project of 2,400 files and 20,000 tests (15 workers, every process starting from an empty cache):

Pool	Wall time
forks	315.17s
vmThreads	⚡ 33.22s

To limit the memory of a single worker, set pool.memoryLimit. Rstest replaces a worker once it exceeds the threshold. See Choose a pool type before switching.

Faster jsdom / happy-dom loading

Test environment prebundle is now enabled by default. Previously, every worker resolved and executed each module file of jsdom or happy-dom one by one. Rstest now builds the environment into one ESM bundle that all workers share.

On a benchmark of 100 files and 1,000 tests:

Environment	Native	Prebundle	Improvement
jsdom 30.0.1	16.99s	⚡ 10.57s	37.8%
happy-dom 20.11.1	6.35s	⚡ 2.98s	53.0%

A new JavaScript API

createRstest makes it easier to integrate Rstest into tools, IDEs, and other Node.js programs. It shares the same core execution capabilities as the rstest command, so you can run tests, watch, list tests, and merge blob reports from code. See Rstest instance.

import { createRstest } from '@rstest/core/api';

const rstest = await createRstest({
  cwd: './packages/app',
  config: { include: ['src/**/*.test.ts'] },
});

const result = await rstest.run();
console.log(result.status, result.summary);

What's Changed

Breaking Changes 🍭

• feat(core): rewrite programmatic API by @​fi3ework in #​1729
• refactor(core)!: express exact file filters with quotes by @​fi3ework in #​1804
• refactor(core)!: list tests through the public createRstest API by @​fi3ework in #​1805
• refactor(core)!: unify public result types with reporter types by @​fi3ework in #​1837

New Features 🎉

• feat(core): enable automatic prebundle by default by @​9aoy in #​1782
• feat(core): support virtual setup files by @​9aoy in #​1783
• feat(playwright): support config via extends by @​9aoy in #​1799
• feat(core): add vmThreads pool support by @​9aoy in #​1755
• feat(core): support browser projects in the public watch API by @​fi3ework in #​1806
• feat(core): add vmForks pool support by @​9aoy in #​1808
• feat(pool): support RSS memory limits for reused forks by @​pkasarda in #​1291
• feat(playwright): configure assertion timeouts and align E2E defaults by @​9aoy in #​1827
• feat(core): expose config file dependencies by @​chenjiahan in #​1835
• feat(core): support config dependencies in Node API by @​chenjiahan in #​1847

Performance 🚀

• perf(core): skip environment bundle sourcemap scans by @​chenjiahan in #​1788
• perf(core): skip mock hoisting for environment bundles by @​chenjiahan in #​1790
• perf(core): reuse successful jsdom compatibility probes by @​chenjiahan in #​1800

Bug Fixes 🐞

• fix(browser): support Vue plugins in browser mode by @​9aoy in #​1785
• fix(core): keep embedded runs from touching host process state by @​fi3ework in #​1784
• fix(playwright): preserve assertion errors at timeout by @​9aoy in #​1798
• fix(core): extend worker cleanup timeout by @​9aoy in #​1813
• fix(browser): keep an empty watch session alive so added test files run by @​fi3ework in #​1816
• fix(core): retry a failed globalSetup on the next watch cycle by @​fi3ework in #​1818
• fix(core): validate project names at instance creation by @​fi3ework in #​1820
• fix(core): spy on accessor-backed module exports in VM pools by @​Gobd in #​1822
• fix(core): align thread worker stack size with forks by @​Gobd in #​1824
• fix(browser): wait for compilation before watch readiness by @​9aoy in #​1828
• fix(core): ignore unhandled preprocessor styles in Node tests by @​9aoy in #​1825
• fix(core): support VM constructors in expect.any by @​Gobd in #​1823
• fix(core): avoid reporting cancelled tests as worker failures by @​9aoy in #​1829
• fix(browser): apply the node pool's watch ignore rules by @​fi3ework in #​1833
• fix(cli): watch root config dependencies by @​chenjiahan in #​1838
• fix(cli): watch project config dependencies by @​chenjiahan in #​1842
• fix(core): handle cross-realm constructors in toStrictEqual by @​ramon-villain in #​1830
• fix(coverage-v8): preserve template counters and implicit else hits by @​karol-f in #​1839
• fix(core): compare cross-realm binary values by bytes by @​9aoy in #​1843
• fix(core): report fatal compile errors instead of hanging by @​fi3ework in #​1846
• fix(core): include config dependencies in build cache by @​chenjiahan in #​1848

Refactor 🔨

• refactor(core): move list rendering to the CLI by @​fi3ework in #​1787
• refactor(core): match runCLI argv to the process.argv shape by @​fi3ework in #​1792
• refactor(core): run merge-reports through the public API by @​fi3ework in #​1796
• refactor(core): run tests through the public createRstest API by @​fi3ework in #​1803
• refactor(core): run watch mode through the public createRstest API by @​fi3ework in #​1807
• refactor(core): throw config and browser-module errors instead of exiting by @​fi3ework in #​1809
• refactor(core): reuse Rsbuild config file discovery by @​chenjiahan in #​1831
• refactor(core): pass config load results internally by @​chenjiahan in #​1840

Document 📖

• docs: reorganize guide integration pages by @​9aoy in #​1797
• docs: document Rslint Rstest rules by @​9aoy in #​1795
• docs: split adapter integration references by @​9aoy in #​1801
• docs: add Module Federation guide by @​9aoy in #​1742
• docs: promote integrations to a standalone section by @​9aoy in #​1812
• docs: simplify pool configuration and selection guidance by @​9aoy in #​1814
• docs: remove unsupported extensions from Rslint guide by @​elecmonkey in #​1810
• docs: add CLI and config examples for each pool by @​9aoy in #​1817
• docs: highlight bundle performance and VM mode by @​9aoy in #​1845
• docs: move Playwright guide into Guide > Basic as E2E testing by @​fi3ework in #​1856
• docs: move Module Federation guide into Guide > Advanced by @​fi3ework in #​1857

Other Changes

• test(core): silence watch session test logs by @​9aoy in #​1786
• chore(deps): update dependency @​rsbuild/core to ~2.2.3 by @​renovate[bot] in #​1794
• chore(deps): update all non-major dependencies by @​renovate[bot] in #​1793
• test(browser): prevent suite hook timeout e2e flake by @​9aoy in #​1802
• test: avoid teardown timing race in VM isolation fixture by @​9aoy in #​1815
• chore(deps): update rsbuild and rspack by @​renovate[bot] in #​1819
• chore: update pull request template and skills by @​chenjiahan in #​1821
• chore(deps): upgrade Rsbuild to 2.2.5 by @​chenjiahan in #​1834
• chore: add docs writer and update agent skills by @​chenjiahan in #​1841
• chore(deps): update all non-major dependencies by @​renovate[bot] in #​1844
• chore(deps): update rsbuild and rspack by @​renovate[bot] in #​1853
• test(mock): reproduce manual mock ignored for workspace-linked package by @​kelleyma49 in #​1851
• chore(build): enable Rspack runtime for Rslib builds by @​Timeless0911 in #​1854
• test(e2e): wait for CLI process tree shutdown by @​9aoy in #​1858
• chore(deps): manage Rstack versions with pnpm catalog by @​9aoy in #​1855
• release: 0.12.0 by @​fi3ework in #​1860

New Contributors

• @​Gobd made their first contribution in #​1822
• @​ramon-villain made their first contribution in #​1830
• @​karol-f made their first contribution in #​1839
• @​kelleyma49 made their first contribution in #​1851

Full Changelog: web-infra-dev/rstest@v0.11.12...v0.12.0

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npm error While resolving: agent-bundle@0.0.0-preview-899755d
npm error Found: @rstest/core@0.12.2
npm error node_modules/@rstest/core
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npm error   peerOptional @rstest/core@"^0.11.10" from agent-bundle@0.0.0-preview-899755d
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