effect-facet-unstable-http-httpclient

name: effect-facet-unstable-http-httpclient description: Guidance for facet effect/unstable/http/HttpClient focused on APIs like get, make, and makeWith. Load after effect-skill-router when this facet is the primary owner.

Effect Facet unstable/http/HttpClient

Owned scope

• Owns only effect/unstable/http/HttpClient.
• Parent module: effect/unstable/http.
• Source anchor: packages/effect/src/unstable/http/HttpClient.ts.

What it is for

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

API quick reference

• get
• make
• makeWith
• mapRequest
• filterOrElse
• filterOrFail
• filterStatus
• filterStatusOk
• layerMergedServices
• mapRequestEffect
• mapRequestInput
• mapRequestInputEffect
• isHttpClient
• del
• put
• tap
• head
• post
• Full API list: references/api-reference.md

How to use it

• Start with constructor-style APIs to build values/services before composing operations.
• Prefer pipe-based composition to keep transformations explicit and testable.
• Treat stateful APIs as synchronization boundaries and keep updates atomic.
• Keep runtime/execute APIs at edges; compose pure transformations before execution.
• Assume unstable APIs can evolve quickly; isolate usage behind thin local adapters.

Starter example

import { HttpClient } from "effect/unstable/http/HttpClient";

const value = HttpClient.make();
const next = HttpClient.get(value);

Common pitfalls

• Scoped resources require deterministic lifecycle management to avoid leaks.
• Concurrency helpers can hide ordering/cancellation behavior; test interruption and race paths.
• 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-http-client-impl (effect/unstable/http#client-impl)
  • effect-facet-unstable-http-cookies (effect/unstable/http/Cookies)
  • effect-facet-unstable-http-core (effect/unstable/http#core)
  • effect-facet-unstable-http-etag (effect/unstable/http/Etag)
  • effect-facet-unstable-http-fetchhttpclient (effect/unstable/http/FetchHttpClient)
  • effect-facet-unstable-http-findmyway (effect/unstable/http/FindMyWay)
  • effect-facet-unstable-http-headers (effect/unstable/http/Headers)
  • effect-facet-unstable-http-httpbody (effect/unstable/http/HttpBody)
  • effect-facet-unstable-http-httpclienterror (effect/unstable/http/HttpClientError)
  • effect-facet-unstable-http-httpclientrequest (effect/unstable/http/HttpClientRequest)
  • effect-facet-unstable-http-httpclientresponse (effect/unstable/http/HttpClientResponse)
  • effect-facet-unstable-http-httpeffect (effect/unstable/http/HttpEffect)
  • effect-facet-unstable-http-httpincomingmessage (effect/unstable/http/HttpIncomingMessage)
  • effect-facet-unstable-http-httpmethod (effect/unstable/http/HttpMethod)
  • plus 16 additional sibling facets.
• Parent module ownership belongs to effect-module-unstable-http.

Escalate to

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

Reference anchors

• Facet source: packages/effect/src/unstable/http/HttpClient.ts
• Parent tests: packages/effect/test/HttpClient.test.ts
• Parent tests: packages/effect/test/unstable/http/Cookies.test.ts
• Parent tests: packages/effect/test/unstable/http/Headers.test.ts
• Parent tests: packages/effect/test/unstable/http/HttpClientRequest.test.ts
• Parent tests: packages/effect/test/unstable/http/HttpEffect.test.ts
• Parent tests: packages/effect/test/unstable/http/Multipart.test.ts
• API details: references/api-reference.md
• Usage notes: references/usage-reference.md
• Ownership mapping: references/owner.md