effect-facet-unstable-workers-worker

name: effect-facet-unstable-workers-worker description: Guidance for facet effect/unstable/workers/Worker focused on APIs like layerSpawner, makePlatform, and makeUnsafe. Load after effect-skill-router when this facet is the primary owner.

Effect Facet unstable/workers/Worker

Owned scope

• Owns only effect/unstable/workers/Worker.
• Parent module: effect/unstable/workers.
• Source anchor: packages/effect/src/unstable/workers/Worker.ts.

What it is for

• Module-specific APIs and usage patterns for Effect programs.

API quick reference

• layerSpawner
• makePlatform
• makeUnsafe
• Worker
• Spawner
• SpawnerFn
• PlatformMessage
• WorkerPlatform
• Full API list: references/api-reference.md

How to use it

• Start with constructor-style APIs to build values/services before composing operations.
• Assume unstable APIs can evolve quickly; isolate usage behind thin local adapters.
• Use the reference docs to select the smallest API surface that solves your task.
• Validate behavior against existing tests before introducing new usage patterns.

Starter example

import { Worker } from "effect/unstable/workers/Worker";

const value = Worker.makePlatform();

Common pitfalls

• Unsafe APIs bypass checks; prefer safe variants unless you control invariants explicitly.
• Unstable module contracts may change; avoid coupling core app logic directly to experimental details.

Not covered here

• Sibling facets under the same parent are out of scope:
  • effect-facet-unstable-workers-transferable (effect/unstable/workers/Transferable)
  • effect-facet-unstable-workers-workererror (effect/unstable/workers/WorkerError)
  • effect-facet-unstable-workers-workerrunner (effect/unstable/workers/WorkerRunner)
• Parent module ownership belongs to effect-module-unstable-workers.

Escalate to

• effect-module-unstable-workers for parent module-wide workflows.
• effect-skill-router for cross-module routing and ownership checks.

Reference anchors

• Facet source: packages/effect/src/unstable/workers/Worker.ts
• Parent tests: packages/effect/test/unstable/workers/WorkerError.test.ts
• API details: references/api-reference.md
• Usage notes: references/usage-reference.md
• Ownership mapping: references/owner.md