effect-io-ai

Package: effect
Module: Context

Context.add

Adds a service to a given Context.

Example

import * as assert from "node:assert"
import { Context, pipe } from "effect"

const Port = Context.GenericTag<{ PORT: number }>("Port")
const Timeout = Context.GenericTag<{ TIMEOUT: number }>("Timeout")

const someContext = Context.make(Port, { PORT: 8080 })

const Services = pipe(
  someContext,
  Context.add(Timeout, { TIMEOUT: 5000 })
)

assert.deepStrictEqual(Context.get(Services, Port), { PORT: 8080 })
assert.deepStrictEqual(Context.get(Services, Timeout), { TIMEOUT: 5000 })

Signature

declare const add: { <I, S>(tag: Tag<I, S>, service: Types.NoInfer<S>): <Services>(self: Context<Services>) => Context<Services | I>; <Services, I, S>(self: Context<Services>, tag: Tag<I, S>, service: Types.NoInfer<S>): Context<Services | I>; }

Source

Since v2.0.0