Fix fiberSet serializes itself as FiberMap

[fubhy]

Summary

• Fix FiberSet.toJSON() to identify the abstraction as FiberSet instead of FiberMap.
• Keep the regression assertion in the existing packages/effect/test/FiberSet.test.ts suite.
• Add a patch changeset for the user-visible inspection behavior correction.

Validation

• pnpm test --run packages/effect/test/FiberSet.test.ts
• pnpm test --run packages/effect/test
• pnpm lint
• pnpm check

Audit provenance

• Audit base: 17f0b91a243ccfe4a38d27debdc983adf434e738
• Finding: effect-5bde654107f0fb71

Closes EFF-489

[changeset-bot]

🦋 Changeset detected

Latest commit: db04308

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

This PR includes changesets to release 30 packages

Name	Type
effect	Patch
@effect/ai-anthropic	Patch
@effect/ai-openai	Patch
@effect/ai-openai-compat	Patch
@effect/ai-openrouter	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

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[pullfrog]

Important

The regression test added here is correct, but the implementation fix is still missing. packages/effect/src/FiberSet.ts still returns _id: "FiberMap" at its toJSON method, so the new test will fail against the current branch.

Reviewed changes

This PR adds a focused regression test in packages/effect/test/FiberSet.test.ts asserting that FiberSet.toJSON() carries _id: "FiberSet". The test is well-placed and directly encodes the expected behavior described in the PR body. However, the corresponding source-code change in packages/effect/src/FiberSet.ts is not present in the diff, so the PR title "Fix fiberSet serializes itself as FiberMap" is premature.

• packages/effect/test/FiberSet.test.ts — adds it.effect("identifies FiberSet in JSON", ...) covering toJSON()._id.

⚠️ Implementation fix missing

packages/effect/src/FiberSet.ts:103 currently returns _id: "FiberMap". It must be changed to _id: "FiberSet" for the new test to pass and for toString / Node inspection output to correctly identify the abstraction.

A patch-level changeset for effect should accompany the source fix, since this is a user-visible runtime behavior correction.

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

[pullfrog]

✅ No new issues found.

Reviewed changes

Since the prior pullfrog review, the PR now includes the missing implementation fix and a patch changeset.

• packages/effect/src/FiberSet.ts — changed the _id returned by toJSON() from "FiberMap" to "FiberSet".
• .changeset/fix-fiberset-json-id.md — added a patch changeset for the effect package describing the inspectable JSON identity fix.

  ^{｜ ⚠️ 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	7.06 KB	7.06 KB	0.00 KB (0.00%)
batching.ts	9.86 KB	9.86 KB	0.00 KB (0.00%)
brand.ts	6.34 KB	6.34 KB	0.00 KB (0.00%)
cache.ts	10.71 KB	10.71 KB	0.00 KB (0.00%)
config.ts	20.73 KB	20.73 KB	0.00 KB (0.00%)
differ.ts	20.31 KB	20.31 KB	0.00 KB (0.00%)
http-client.ts	21.53 KB	21.53 KB	0.00 KB (0.00%)
logger.ts	10.84 KB	10.84 KB	0.00 KB (0.00%)
metric.ts	8.98 KB	8.98 KB	0.00 KB (0.00%)
optic.ts	7.18 KB	7.18 KB	0.00 KB (0.00%)
pubsub.ts	14.99 KB	14.99 KB	0.00 KB (0.00%)
queue.ts	11.66 KB	11.66 KB	0.00 KB (0.00%)
schedule.ts	10.83 KB	10.83 KB	0.00 KB (0.00%)
schema-class.ts	19.27 KB	19.27 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	29.09 KB	29.09 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	25.40 KB	25.40 KB	0.00 KB (0.00%)
schema-string-transformation.ts	13.42 KB	13.42 KB	0.00 KB (0.00%)
schema-string.ts	10.95 KB	10.95 KB	0.00 KB (0.00%)
schema-template-literal.ts	15.21 KB	15.21 KB	0.00 KB (0.00%)
schema-toArbitraryLazy.ts	22.02 KB	22.02 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	24.45 KB	24.45 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	19.28 KB	19.28 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	19.11 KB	19.11 KB	0.00 KB (0.00%)
schema-toFormatter.ts	18.97 KB	18.97 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	22.69 KB	22.69 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	19.60 KB	19.60 KB	0.00 KB (0.00%)
schema.ts	18.52 KB	18.52 KB	0.00 KB (0.00%)
stm.ts	12.63 KB	12.63 KB	0.00 KB (0.00%)
stream.ts	9.80 KB	9.80 KB	0.00 KB (0.00%)