effect-facet-unstable-reactivity-hydration

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Guidance for facet `effect/unstable/reactivity/Hydration` focused on APIs like hydrate, toValues, and dehydrate. Load after `effect-skill-router` when this facet is the primary owner.

TylorS By TylorS schedule Updated 2/21/2026
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name: effect-facet-unstable-reactivity-hydration description: Guidance for facet effect/unstable/reactivity/Hydration focused on APIs like hydrate, toValues, and dehydrate. Load after effect-skill-router when this facet is the primary owner.

Effect Facet unstable/reactivity/Hydration

Owned scope

  • Owns only effect/unstable/reactivity/Hydration.
  • Parent module: effect/unstable/reactivity.
  • Source anchor: packages/effect/src/unstable/reactivity/Hydration.ts.

What it is for

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

API quick reference

  • hydrate
  • toValues
  • dehydrate
  • DehydratedAtom
  • DehydratedAtomValue
  • Full API list: references/api-reference.md

How to use it

  • 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 { Hydration } from "effect/unstable/reactivity/Hydration";

const value = Hydration.hydrate();

Common pitfalls

  • Unstable module contracts may change; avoid coupling core app logic directly to experimental details.
  • Prefer explicit, typed combinators over ad-hoc casting or unchecked assumptions.

Not covered here

  • Sibling facets under the same parent are out of scope:
    • effect-facet-unstable-reactivity-asyncresult (effect/unstable/reactivity/AsyncResult)
    • effect-facet-unstable-reactivity-atom (effect/unstable/reactivity/Atom)
    • effect-facet-unstable-reactivity-atomhttpapi (effect/unstable/reactivity/AtomHttpApi)
    • effect-facet-unstable-reactivity-atomref (effect/unstable/reactivity/AtomRef)
    • effect-facet-unstable-reactivity-atomregistry (effect/unstable/reactivity/AtomRegistry)
    • effect-facet-unstable-reactivity-atomrpc (effect/unstable/reactivity/AtomRpc)
    • effect-facet-unstable-reactivity-reactivity (effect/unstable/reactivity/Reactivity)
  • Parent module ownership belongs to effect-module-unstable-reactivity.

Escalate to

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

Reference anchors

  • Facet source: packages/effect/src/unstable/reactivity/Hydration.ts
  • Parent tests: packages/effect/test/reactivity/AsyncResult.test.ts
  • Parent tests: packages/effect/test/reactivity/Atom.test.ts
  • API details: references/api-reference.md
  • Usage notes: references/usage-reference.md
  • Ownership mapping: references/owner.md
Install via CLI
npx skills add https://github.com/TylorS/typed-smol --skill effect-facet-unstable-reactivity-hydration
Repository Details
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