<I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <
A1,
E1,
R1
>(
layer: Layer<A1, E1, R1>
) => Layer<A1, E1, I | R1>
<A1, E1, R1, I, A>(
layer: Layer<A1, E1, R1>,
service: Context.Key<I, A>,
f: (a: Types.NoInfer<A>) => A
): Layer<A1, E1, I | R1>Updates a service in the context with a new implementation.
When to use
Use to adapt or extend a service's behavior during the creation of a layer.
Details
This function modifies the existing implementation of a service in the
context. It retrieves the current service, applies the provided
transformation function f, and replaces the old service with the
transformed one.
export const const updateService: {
<I, A>(
service: Context.Key<I, A>,
f: (a: Types.NoInfer<A>) => A
): <A1, E1, R1>(
layer: Layer<A1, E1, R1>
) => Layer<A1, E1, I | R1>
<A1, E1, R1, I, A>(
layer: Layer<A1, E1, R1>,
service: Context.Key<I, A>,
f: (a: Types.NoInfer<A>) => A
): Layer<A1, E1, I | R1>
}
Updates a service in the context with a new implementation.
When to use
Use to adapt or extend a service's behavior during the creation of a
layer.
Details
This function modifies the existing implementation of a service in the
context. It retrieves the current service, applies the provided
transformation function f, and replaces the old service with the
transformed one.
updateService: {
<function (type parameter) I in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>I, function (type parameter) A in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>A>(
service: Context.Key<I, A>(parameter) service: {
Identifier: Identifier;
Service: Shape;
key: string;
stack: string | undefined;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import ContextContext.interface Key<out Identifier, out Shape>Typed identifier for a service stored in a Context.
When to use
Use as the typed handle for storing, retrieving, and requiring a specific
service in a Context.
Details
Identifier tracks the requirement in Effect types, while Shape is the
service implementation retrieved by the key. A key is also an Effect value,
so yielding it inside Effect.gen retrieves the service from the current
fiber context.
Key<function (type parameter) I in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>I, function (type parameter) A in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>A>,
f: (a: Types.NoInfer<A>) => Af: (a: Types.NoInfer<A>a: import TypesTypes.type NoInfer<A> = [A][A extends any
? 0
: never]
Prevents TypeScript from inferring a type parameter from a specific
position.
When to use
Use when a function parameter must match an inferred type without becoming
an inference source.
Details
The parameter using NoInfer must still match the inferred type.
Example (Controlling inference)
import type { Types } from "effect"
declare function withDefault<T>(value: T, fallback: Types.NoInfer<T>): T
// T is inferred as "a" | "b" from the first argument only
const result = withDefault<"a" | "b">("a", "b")
NoInfer<function (type parameter) A in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>A>) => function (type parameter) A in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>A
): <function (type parameter) A1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>E1, function (type parameter) R1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>R1>(layer: Layer<A1, E1, R1>(parameter) layer: {
build: (memoMap: MemoMap, scope: Scope.Scope) => Effect<Context.Context<A1>, E1, R1>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<function (type parameter) A1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>E1, function (type parameter) R1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>R1>) => interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<function (type parameter) A1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>E1, function (type parameter) I in <I, A>(service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): <A1, E1, R1>(layer: Layer<A1, E1, R1>) => Layer<A1, E1, I | R1>I | function (type parameter) R1 in <A1, E1, R1>(layer: Layer<A1, E1, R1>): Layer<A1, E1, I | R1>R1>
<function (type parameter) A1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>E1, function (type parameter) R1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>R1, function (type parameter) I in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>I, function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A>(
layer: Layer<A1, E1, R1>(parameter) layer: {
build: (memoMap: MemoMap, scope: Scope.Scope) => Effect<Context.Context<A1>, E1, R1>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<function (type parameter) A1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>E1, function (type parameter) R1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>R1>,
service: Context.Key<I, A>(parameter) service: {
Identifier: Identifier;
Service: Shape;
key: string;
stack: string | undefined;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import ContextContext.interface Key<out Identifier, out Shape>Typed identifier for a service stored in a Context.
When to use
Use as the typed handle for storing, retrieving, and requiring a specific
service in a Context.
Details
Identifier tracks the requirement in Effect types, while Shape is the
service implementation retrieved by the key. A key is also an Effect value,
so yielding it inside Effect.gen retrieves the service from the current
fiber context.
Key<function (type parameter) I in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>I, function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A>,
f: (a: Types.NoInfer<A>) => Af: (a: Types.NoInfer<A>a: import TypesTypes.type NoInfer<A> = [A][A extends any
? 0
: never]
Prevents TypeScript from inferring a type parameter from a specific
position.
When to use
Use when a function parameter must match an inferred type without becoming
an inference source.
Details
The parameter using NoInfer must still match the inferred type.
Example (Controlling inference)
import type { Types } from "effect"
declare function withDefault<T>(value: T, fallback: Types.NoInfer<T>): T
// T is inferred as "a" | "b" from the first argument only
const result = withDefault<"a" | "b">("a", "b")
NoInfer<function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A>) => function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A
): interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<function (type parameter) A1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>E1, function (type parameter) I in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>I | function (type parameter) R1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>R1>
} = dual<(...args: Array<any>) => any, <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A) => Layer<A1, E1, I | R1>>(arity: 3, body: <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A) => Layer<A1, E1, I | R1>): ((...args: Array<any>) => any) & (<A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A) => Layer<A1, E1, I | R1>) (+1 overload)Creates a function that can be called in data-first style or data-last
(pipe-friendly) style.
When to use
Use to expose one implementation through both direct and pipe-friendly
call styles.
Details
Pass either the arity of the uncurried function or a predicate that decides
whether the current call is data-first. Arity is the common case. Use a
predicate when optional arguments make arity ambiguous.
Example (Selecting data-first or data-last style by arity)
import { Function, pipe } from "effect"
const sum = Function.dual<
(that: number) => (self: number) => number,
(self: number, that: number) => number
>(2, (self, that) => self + that)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
Example (Defining overloads with call signatures)
import { Function, pipe } from "effect"
const sum: {
(that: number): (self: number) => number
(self: number, that: number): number
} = Function.dual(2, (self: number, that: number): number => self + that)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
Example (Selecting data-first or data-last style with a predicate)
import { Function, pipe } from "effect"
const sum = Function.dual<
(that: number) => (self: number) => number,
(self: number, that: number) => number
>(
(args) => args.length === 2,
(self, that) => self + that
)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
dual(
3,
<function (type parameter) A1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>E1, function (type parameter) R1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>R1, function (type parameter) I in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>I, function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A>(
layer: Layer<A1, E1, R1>(parameter) layer: {
build: (memoMap: MemoMap, scope: Scope.Scope) => Effect<Context.Context<A1>, E1, R1>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<function (type parameter) A1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>E1, function (type parameter) R1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>R1>,
service: Context.Key<I, A>(parameter) service: {
Identifier: Identifier;
Service: Shape;
key: string;
stack: string | undefined;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import ContextContext.interface Key<out Identifier, out Shape>Typed identifier for a service stored in a Context.
When to use
Use as the typed handle for storing, retrieving, and requiring a specific
service in a Context.
Details
Identifier tracks the requirement in Effect types, while Shape is the
service implementation retrieved by the key. A key is also an Effect value,
so yielding it inside Effect.gen retrieves the service from the current
fiber context.
Key<function (type parameter) I in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>I, function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A>,
f: (a: Types.NoInfer<A>) => Af: (a: Types.NoInfer<A>a: import TypesTypes.type NoInfer<A> = [A][A extends any
? 0
: never]
Prevents TypeScript from inferring a type parameter from a specific
position.
When to use
Use when a function parameter must match an inferred type without becoming
an inference source.
Details
The parameter using NoInfer must still match the inferred type.
Example (Controlling inference)
import type { Types } from "effect"
declare function withDefault<T>(value: T, fallback: Types.NoInfer<T>): T
// T is inferred as "a" | "b" from the first argument only
const result = withDefault<"a" | "b">("a", "b")
NoInfer<function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A>) => function (type parameter) A in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A
): interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<function (type parameter) A1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>A1, function (type parameter) E1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>E1, function (type parameter) I in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>I | function (type parameter) R1 in <A1, E1, R1, I, A>(layer: Layer<A1, E1, R1>, service: Context.Key<I, A>, f: (a: Types.NoInfer<A>) => A): Layer<A1, E1, I | R1>R1> => const provide: {
<RIn, E, ROut>(that: Layer<ROut, E, RIn>): <
RIn2,
E2,
ROut2
>(
self: Layer<ROut2, E2, RIn2>
) => Layer<
ROut2,
E | E2,
RIn | Exclude<RIn2, ROut>
>
<Layers extends [Any, ...Array<Any>]>(
that: Layers
): <A, E, R>(
self: Layer<A, E, R>
) => Layer<
A,
E | Error<Layers[number]>,
| Services<Layers[number]>
| Exclude<R, Success<Layers[number]>>
>
<RIn2, E2, ROut2, RIn, E, ROut>(
self: Layer<ROut2, E2, RIn2>,
that: Layer<ROut, E, RIn>
): Layer<
ROut2,
E | E2,
RIn | Exclude<RIn2, ROut>
>
<A, E, R, Layers extends [Any, ...Array<Any>]>(
self: Layer<A, E, R>,
that: Layers
): Layer<
A,
E | Error<Layers[number]>,
| Services<Layers[number]>
| Exclude<R, Success<Layers[number]>>
>
}
layer: Layer<A1, E1, R1>(parameter) layer: {
build: (memoMap: MemoMap, scope: Scope.Scope) => Effect<Context.Context<A1>, E1, R1>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
const effect: {
<I, S>(service: Context.Key<I, S>): <E, R>(
effect: Effect<S, E, R>
) => Layer<I, E, Exclude<R, Scope.Scope>>
<I, S, E, R>(
service: Context.Key<I, S>,
effect: Effect<Types.NoInfer<S>, E, R>
): Layer<I, E, Exclude<R, Scope.Scope>>
}
service: Context.Key<I, A>(parameter) service: {
Identifier: Identifier;
Service: Shape;
key: string;
stack: string | undefined;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import internalEffectinternalEffect.const map: {
<A, B>(f: (a: A) => B): <E, R>(
self: Effect.Effect<A, E, R>
) => Effect.Effect<B, E, R>
<A, E, R, B>(
self: Effect.Effect<A, E, R>,
f: (a: A) => B
): Effect.Effect<B, E, R>
}
service: Context.Key<I, A>(parameter) service: {
Identifier: Identifier;
Service: Shape;
key: string;
stack: string | undefined;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
f: (a: Types.NoInfer<A>) => Af)))
)