Variable Layer

Type Declaration

• effect: <S extends unknown, E extends unknown>(
      tag: Tag<S>,
      f: () => Promise<S>,
  ) => Layer<never, E, S>

  Creates a layer from an async function.

• empty: () => Layer<never, never, never>

  Creates an empty layer that provides nothing.

• fromContext: <R extends unknown>(context: Context<R>) => Layer<never, never, R>

  Creates a layer from a context.

• fromService: <Dep extends unknown, S extends unknown>(
      tag: Tag<S>,
      depTag: Tag<Dep>,
      f: (dep: Dep) => S,
  ) => Layer<Dep, never, S>

  Creates a layer that depends on another service.

• fromServiceEffect: <Dep extends unknown, E extends unknown, S extends unknown>(
      tag: Tag<S>,
      depTag: Tag<Dep>,
      f: (dep: Dep) => Promise<S>,
  ) => Layer<Dep, E, S>

  Creates a layer that depends on another service (async).

• mergeAll: <Layers extends Layer<unknown, unknown, unknown>[]>(
      ...layers: Layers,
  ) => Layer<
      Layers[number] extends Layer<RIn, unknown, unknown> ? RIn : never,
      Layers[number] extends Layer<unknown, E, unknown> ? E : never,
      Layers[number] extends Layer<unknown, unknown, ROut> ? ROut : never,
  >

  Merges multiple layers into one.

• succeed: <S extends unknown>(tag: Tag<S>, service: S) => Layer<never, never, S>

  Creates a layer that provides a service with a constant value.

• sync: <S extends unknown>(tag: Tag<S>, f: () => S) => Layer<never, never, S>

  Creates a layer from a sync function.