effect-ts skills

Effect-TS (Effect) guidance for TypeScript with support for both stable v3 and beta v4. Choose the skill that matches your project:

Skills

effect-ts - Effect v3 (Stable Production)

Effect v3 (3.19.19) production guidance: designing and implementing Effect-based code, modeling expected errors vs defects, managing dependencies with Context/Layer/Effect.Service, handling resource lifecycles with Scope, running effects at the program edge, using Effect.gen, validating data with Effect Schema, and testing time with TestClock.

Install:

npx skills add teeverc/effect-ts --skill effect-ts

Location: ./skills/effect-ts/

Includes:

• SKILL.md - Core guidance
• references/ - Comprehensive v3 reference guides

effect-v4 - Effect v4 (Beta) + Migration

Effect v4 (beta) development guidance and v3 → v4 migration support. The core programming model is stable, but effect/unstable/* modules may receive breaking changes in minor releases.

Install:

npx skills add teeverc/effect-ts --skill effect-v4

Location: ./skills/effect-v4/

Includes:

• SKILL.md - v4 core patterns + migration guidance
• references/core-usage.md - v4 types and combinators
• references/dependency-management.md - ServiceMap patterns
• references/generators.md - Yieldable handling
• references/schema.md - Codec patterns
• references/testing-stack.md - v4 test wiring
• references/migration/ - 12 v3 → v4 migration guides

Packaging

Package v3 skill:

cd skills/effect-ts
zip -r ../../dist/effect-ts.skill SKILL.md references
cd ../..

Package v4 skill:

cd skills/effect-v4
zip -r ../../dist/effect-v4.skill SKILL.md references
cd ../..

Both skills can be installed and used independently. Recommend v3 for production, v4 for beta testing and migration planning.