Avoid direct @vitest/runner import

[tim-smart]

Summary

• remove the direct @vitest/runner import and development dependency
• require Vitest 4.1 or later and read suite state from TestRunner.getCurrentSuite
• ensure @effect/vitest observes the runner instance owned by the consumer's Vitest installation
• add a minor changeset documenting the dropped Vitest 3 and 4.0 support

Reproduction

Declaring @vitest/runner separately does not fix npm's Vitest-only install. With Vitest 4.0.18, npm installed runner 4.1.10 for @effect/vitest, while Vitest resolved its nested runner 4.0.18. Resolution from the two packages returned distinct physical paths.

The final implementation has no runner declaration or subpath import. Collector state comes from the main Vitest entry's TestRunner, so it uses the running Vitest instance by construction and emits no vitest/suite deprecation warning.

Validation

• pnpm lint-fix
• pnpm check
• pnpm --filter @effect/vitest build
• pnpm test --run: 343 files passed; 8,416 tests passed, 1 expected failure, 8 skipped

Closes EFF-124
Closes #6666

[changeset-bot]

🦋 Changeset detected

Latest commit: f003677

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 28 packages

Name	Type
@effect/vitest	Major
effect	Major
@effect/opentelemetry	Major
@effect/platform-browser	Major
@effect/platform-bun	Major
@effect/platform-node-shared	Major
@effect/platform-node	Major
@effect/ai-anthropic	Major
@effect/ai-openai-compat	Major
@effect/ai-openai	Major
@effect/ai-openrouter	Major
@effect/atom-react	Major
@effect/atom-solid	Major
@effect/atom-vue	Major
@effect/sql-clickhouse	Major
@effect/sql-d1	Major
@effect/sql-libsql	Major
@effect/sql-mssql	Major
@effect/sql-mysql2	Major
@effect/sql-pg	Major
@effect/sql-pglite	Major
@effect/sql-sqlite-bun	Major
@effect/sql-sqlite-do	Major
@effect/sql-sqlite-node	Major
@effect/sql-sqlite-react-native	Major
@effect/sql-sqlite-wasm	Major
@effect/docgen	Major
@effect/openapi-generator	Major

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📥 Commits

Reviewing files that changed from the base of the PR and between b60b4de and f003677.

📒 Files selected for processing (3)

• .changeset/fix-vitest-runner-import.md
• packages/vitest/package.json
• packages/vitest/src/internal/internal.ts

📝 Walkthrough

Walkthrough

@effect/vitest now resolves getCurrentSuite through vitest/suite, removes the direct @vitest/runner peer dependency, broadens Vitest compatibility to versions 3 and 4, and records a patch changeset.

Changes

Vitest suite import and package contract

Layer / File(s)	Summary
Update suite import and peer contract packages/vitest/src/internal/internal.ts, packages/vitest/package.json, .changeset/fix-vitest-runner-import.md	Imports getCurrentSuite from vitest/suite, removes @vitest/runner from peer dependencies, supports vitest `^3.0.0

Estimated code review effort: 1 (Trivial) | ~5 minutes

Suggested labels: 4.0

Suggested reviewers: gcanti, coyasong

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The PR removes the direct @vitest/runner import by switching to vitest/suite, which addresses the hoisting failure described in #6666.
Out of Scope Changes check	✅ Passed	All changes relate to the Vitest runner import/dependency fix and accompanying changeset; no unrelated edits are evident.

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[github-actions]

Bundle Size Analysis

File Name	Current Size	Previous Size	Difference
basic.ts	6.63 KB	6.63 KB	0.00 KB (0.00%)
batching.ts	9.37 KB	9.37 KB	0.00 KB (0.00%)
brand.ts	6.26 KB	6.26 KB	0.00 KB (0.00%)
cache.ts	10.12 KB	10.12 KB	0.00 KB (0.00%)
config.ts	19.21 KB	19.21 KB	0.00 KB (0.00%)
differ.ts	18.42 KB	18.42 KB	0.00 KB (0.00%)
http-client.ts	20.76 KB	20.76 KB	0.00 KB (0.00%)
logger.ts	10.28 KB	10.28 KB	0.00 KB (0.00%)
metric.ts	8.55 KB	8.55 KB	0.00 KB (0.00%)
optic.ts	7.41 KB	7.41 KB	0.00 KB (0.00%)
pubsub.ts	14.20 KB	14.20 KB	0.00 KB (0.00%)
queue.ts	11.08 KB	11.08 KB	0.00 KB (0.00%)
schedule.ts	10.28 KB	10.28 KB	0.00 KB (0.00%)
schema-class.ts	18.16 KB	18.16 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	28.02 KB	28.02 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	24.33 KB	24.33 KB	0.00 KB (0.00%)
schema-string-transformation.ts	12.69 KB	12.69 KB	0.00 KB (0.00%)
schema-string.ts	10.35 KB	10.35 KB	0.00 KB (0.00%)
schema-template-literal.ts	14.49 KB	14.49 KB	0.00 KB (0.00%)
schema-toArbitraryLazy.ts	20.93 KB	20.93 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	23.38 KB	23.38 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	18.32 KB	18.32 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	18.00 KB	18.00 KB	0.00 KB (0.00%)
schema-toFormatter.ts	17.88 KB	17.88 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	21.51 KB	21.51 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	18.55 KB	18.55 KB	0.00 KB (0.00%)
schema.ts	17.43 KB	17.43 KB	0.00 KB (0.00%)
stm.ts	12.05 KB	12.05 KB	0.00 KB (0.00%)
stream.ts	9.36 KB	9.36 KB	0.00 KB (0.00%)