skills/effect-ts/SKILL.md
Effect — production-grade TypeScript framework for type-safe error handling, dependency injection, concurrency, streams, schema validation, and platform abstractions. MANDATORY TRIGGERS: effect-ts, Effect, Effect.gen, Effect.runPromise, @effect/platform, @effect/schema, @effect/vitest, Effect.Service, Layer, Context.Tag. Also trigger when user wants type-safe error handling in TypeScript, typed errors, functional effect system, structured concurrency with fibers, schema decode/encode, dependency injection with layers, or building robust TypeScript backends. When in doubt about whether to use this skill for Effect-related tasks, use it.
npx skillsauth add abhisheksharma-17/skills-graph effect-tsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Type-safe, composable, production-grade TypeScript framework for building robust applications.
Source: effect.website/docs | Package: effect v3.21.x | License: MIT
| Reference | File | Read When |
|-----------|------|-----------|
| Overview & Setup | references/00-overview.md | Getting started, installation, what Effect is, when to use it, core types |
| The Effect Type | references/01-effect-type.md | Creating effects, Effect.gen, running effects, pipe/flow, combinators |
| Error Handling | references/02-error-handling.md | Typed errors, tagged errors, catching, retrying, defects vs failures |
| Context & Services | references/03-context-services.md | Dependency injection, Context.Tag, Effect.Service, service patterns |
| Layers | references/04-layers.md | Layer composition, providing services, Layer.provide, merging layers |
| Schema | references/05-schema.md | Schema validation, decode/encode, branded types, Schema.Class, transforms |
| Concurrency | references/06-concurrency.md | Fibers, fork/join, structured concurrency, interruption, racing |
| Concurrency Patterns | references/07-concurrency-patterns.md | Semaphore, Queue, Deferred, PubSub, rate limiting, backpressure |
| Streams | references/08-streams.md | Stream creation, transformation, consumption, Sink, Channel |
| Resource Management | references/09-resource-management.md | Scope, acquireRelease, Scoped effects, finalizers, safe cleanup |
| Configuration | references/10-configuration.md | Config module, ConfigProvider, environment variables, secrets, nested config |
| Testing | references/11-testing.md | @effect/vitest, TestClock, TestContext, layer testing, property testing |
| Platform | references/12-platform.md | HTTP client/server, HttpApi, filesystem, @effect/platform abstractions |
# Install core package
npm install effect
# Common companion packages
npm install @effect/platform @effect/platform-node
npm install @effect/schema # included in effect since v3
npm install @effect/vitest # testing integration
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