Fix openRouter reasoning-end metadata uses an undeclared casing

[fubhy]

Summary

The transition branch emits metadata.openRouter, while start, delta, terminal-flush, and exported metadata all use openrouter.

Important

This PR starts with focused failing reproduction tests. Add the implementation fix to this same branch; CI is expected to fail until that fix is included.

OpenRouter reasoning-end metadata uses an undeclared casing

Module: packages/ai/openrouter/src/OpenRouterLanguageModel.ts
Audit ID: relsem-openrouter-reasoning-metadata-case
Severity / confidence: medium / high

What happens

The transition branch emits metadata.openRouter, while start, delta, terminal-flush, and exported metadata all use openrouter.

Why it happens

A single branch spells the provider metadata key openRouter rather than openrouter.

Expected behavior

Accumulated reasoning details on reasoning-end remain under the exported metadata.openrouter namespace.

Relevant implementation

These links and excerpts are pinned to audit base b206fa5d7655c1634c9993410a9203f6616a5ca2.

• packages/ai/openrouter/src/OpenRouterLanguageModel.ts:1

View problematic code at packages/ai/openrouter/src/OpenRouterLanguageModel.ts:1

/**

View exact lines on GitHub

Reproduction

pnpm test --run packages/ai/openrouter/test/OpenRouterLanguageModel.test.ts -t "uses lowercase openrouter reasoning-end metadata"

Observed failure: Independently rerun; failed at the intended semantic assertion.

Implementation handoff

The initial reproduction tests on this branch are the regression specification for the implementation fix that should follow in this PR.

1. Start with the pinned implementation excerpts and the Why it happens analysis above.
2. Change the implementation so it satisfies the stated Expected behavior; do not weaken or remove the reproduction assertions.
3. Run the focused reproduction command(s) and confirm the observed failures become passing tests:

pnpm test --run packages/ai/openrouter/test/OpenRouterLanguageModel.test.ts -t "uses lowercase openrouter reasoning-end metadata"

4. Run the affected package's existing tests, then the repository lint and type checks before requesting review.

Audit provenance

• Audit base: b206fa5d7655c1634c9993410a9203f6616a5ca2
• Reproduction base: b206fa5d7655c1634c9993410a9203f6616a5ca2
• Findings: relsem-openrouter-reasoning-metadata-case
• Initial patch: focused reproduction tests; implementation fix pending

Closes EFF-565

[changeset-bot]

🦋 Changeset detected

Latest commit: 357058c

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

This PR includes changesets to release 30 packages

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

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[pullfrog]

no API key found — this repo is configured to use moonshotai/kimi-k2.7-code, which needs MOONSHOT_API_KEY, but the runner has no key for it.

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[pullfrog]

✅ No new issues found.

Reviewed changes

• Fixed the reasoning-end provider metadata key casing from openRouter to openrouter in OpenRouterLanguageModel.ts.
• Added a patch changeset for @effect/ai-openrouter.
• Reformatted the new makeStreamTestLayer helper call site.

The regression test added in the prior commit now passes and asserts the lowercase openrouter namespace. No other openRouter-cased metadata keys remain in the source.

  ^{｜ ⚠️ this action is pinned to a commit SHA, which freezes the cleanup step — switch to @v0 or keep the SHA fresh with Dependabot ｜ View workflow run ｜ Using Kimi K2 (free via Pullfrog for OSS) ｜ 𝕏}

[github-actions]

Bundle Size Analysis

Generated from PR build output; treat the content below as untrusted.

File Name	Current Size	Previous Size	Difference
basic.ts	6.92 KB	6.92 KB	0.00 KB (0.00%)
batching.ts	9.72 KB	9.72 KB	0.00 KB (0.00%)
brand.ts	6.60 KB	6.60 KB	0.00 KB (0.00%)
cache.ts	10.59 KB	10.59 KB	0.00 KB (0.00%)
config.ts	20.88 KB	20.88 KB	0.00 KB (0.00%)
differ.ts	19.74 KB	19.74 KB	0.00 KB (0.00%)
http-client.ts	21.52 KB	21.52 KB	0.00 KB (0.00%)
logger.ts	10.81 KB	10.81 KB	0.00 KB (0.00%)
metric.ts	8.86 KB	8.86 KB	0.00 KB (0.00%)
optic.ts	6.68 KB	6.68 KB	0.00 KB (0.00%)
pubsub.ts	14.86 KB	14.86 KB	0.00 KB (0.00%)
queue.ts	11.54 KB	11.54 KB	0.00 KB (0.00%)
schedule.ts	10.71 KB	10.71 KB	0.00 KB (0.00%)
schema-class.ts	19.45 KB	19.45 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	29.32 KB	29.32 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	25.59 KB	25.59 KB	0.00 KB (0.00%)
schema-string-transformation.ts	13.52 KB	13.52 KB	0.00 KB (0.00%)
schema-string.ts	11.05 KB	11.05 KB	0.00 KB (0.00%)
schema-template-literal.ts	15.35 KB	15.35 KB	0.00 KB (0.00%)
schema-toArbitraryLazy.ts	21.48 KB	21.48 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	23.96 KB	23.96 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	18.70 KB	18.70 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	18.53 KB	18.53 KB	0.00 KB (0.00%)
schema-toFormatter.ts	18.39 KB	18.39 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	22.16 KB	22.16 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	19.05 KB	19.05 KB	0.00 KB (0.00%)
schema.ts	18.69 KB	18.69 KB	0.00 KB (0.00%)
stm.ts	12.59 KB	12.59 KB	0.00 KB (0.00%)
stream.ts	9.67 KB	9.67 KB	0.00 KB (0.00%)

[pullfrog]

✅ No new issues found.

Reviewed changes

• Refined the new streamText regression test: replaced globalThis.Array.from(parts).find(...) with parts.find(...), removed the now-redundant assert.isDefined guard, added the missing Stream import, and typed makeStreamTestLayer events as ReadonlyArray<typeof Generated.ChatStreamChunk.Encoded>.

The implementation fix at OpenRouterLanguageModel.ts remains unchanged and correct. The targeted test, full @effect/ai-openrouter suite, and root pnpm lint all pass.

  ^{｜ ⚠️ this action is pinned to a commit SHA, which freezes the cleanup step — switch to @v0 or keep the SHA fresh with Dependabot ｜ View workflow run ｜ Using Kimi K2 (free via Pullfrog for OSS) ｜ 𝕏}