Effect Atom State Management

How To Use

• Use this skill when the task matches the frontmatter description.
• Start from the repo's local code and the current task; do not load every reference by default.
• When an Effect API detail matters, inspect the consuming project's

  repos/effect/

  subtree before relying on memory.
• Read only the reference files below that match the work in front of you.

Reference Map

• Effect Source Reference:

  references/01-effect-source-reference.md

• Core Concepts:

  references/02-core-concepts.md

• Pattern: Basic Atoms:

  references/03-pattern-basic-atoms.md

• Pattern: Derived Atoms:

  references/04-pattern-derived-atoms.md

• Pattern: Atom Family (Dynamic Atoms):

  references/05-pattern-atom-family-dynamic-atoms.md

• Pattern: Atom.fn for Async Actions:

  references/06-pattern-atom-fn-for-async-actions.md

• Pattern: Runtime with Services:

  references/07-pattern-runtime-with-services.md

• Pattern: AsyncResult Types (Error Handling):

  references/08-pattern-asyncresult-types-error-handling.md

• Pattern: Stream Integration:

  references/09-pattern-stream-integration.md

• Pattern: Pull Atoms (Pagination):

  references/10-pattern-pull-atoms-pagination.md

• Pattern: Persistence:

  references/11-pattern-persistence.md

• React Integration:

  references/12-react-integration.md

• Scoped Resources & Finalizers:

  references/13-scoped-resources-finalizers.md

• Key Principles:

  references/14-key-principles.md

• Common Patterns:

  references/15-common-patterns.md

• Atom.transform:

  references/16-atom-transform.md

• Atom.batch:

  references/17-atom-batch.md

• AsyncResult.builder:

  references/18-asyncresult-builder.md

• useAtomMount:

  references/19-useatommount.md

• Performance:

  references/20-performance.md

• Anti-Patterns:

  references/21-anti-patterns.md

Validation

• Run the target repository's real typecheck, tests, or smoke command after edits.
• If validation cannot run, report the exact gap and the surface you inspected manually.