Proposed changes

Fixes #14314.

A SevereServiceError from Mocha or Jasmine beforeTest/afterTest currently logs an error while the affected test passes. Fail that test through the existing shared test wrapper. A severe beforeTest error prevents its body from running and still reaches afterTest with the failure; a severe afterTest error fails an otherwise passing test. Ordinary hook errors, existing body failures, skips, later tests, and Mocha native retries retain their behavior. The check scans all hook results, so an earlier ordinary error cannot hide a later severe error.

This is limited to Test wrappers; Cucumber's separate scenario/step hooks and the global hook executor are unchanged. Document the test-level behavior and add a dedicated named mock-driver smoke suite.

How you tested

• Compiled clean main 795fa22a0ade22cdb84dfbece5c57926fd981203 before the baseline. Actual Mocha/Jasmine Launcher runs and JSON reports reproduced four false-green severe cases among ten baseline cases; all ten meet the intended behavior after the change. Six ordinary/no-error controls retain their results.

• Added durable regressions before editing product code: two fail on the original behavior; the focused file then passes all 21 tests.

• pnpm run test:package wdio-utils, wdio-mocha-framework, and wdio-jasmine-framework: 725 tests pass across 33 files, with no type errors.

• pnpm run test:smoke severeTestHooks: 18 case assertions pass with actual Launcher/reporter events, covering ordinary and severe errors, mixed hook arrays, subsequent tests, original body/expectation failures, and successful one-shot Mocha native retries. These use the repository's mock driver, not a real browser.

• Review follow-up: two additional regressions fail on the initially submitted revision and the focused file now passes 25 tests. A newly severe afterTest failure pauses the debug agent once after that hook; local broker/CLI checks cover resume and close for both frameworks and preserve the existing body-failure pause. All six runtime cases pass with the mock driver. Jasmine retains its existing adapter-provided bundled spec identity; no identity metadata repair is claimed. The smoke suite also removes only its own temporary directory, verified on success and an intentional failure path while preserving prior artifacts.

• Existing named smokes pass: mochaHooksTestrunner, jasmineHooksTestrunner, jasmineAfterHookArgsValidation, severeErrorTest, and cucumberTestrunner.

• pnpm run test:typings:mocha, pnpm run test:typings:jasmine, and pnpm run test:oxlint pass.

• pnpm run docs:generate:en and pnpm --filter=@wdio/docs run check --skip-build-checks pass. The full docs:check requires an absent website/build; no production site build was run.

• Unit tests for the touched package(s)

• Type definition tests

• Smoke or e2e

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Documentation update

Checklist

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective
• I have added the necessary documentation
• I have added proper type definitions for new commands (no new commands or public types)

Backport Request

This change targets current main/v10. No v9 backport is included.

Further comments

Codex assisted with implementation, review, and the local validation listed above. Mocha native framework retries are tested; this does not claim that WDIO's body-only repeatTest retries rerun test hooks.