<S extends Chunk<any>, T extends Chunk<any>>(
f: (a: Chunk.Infer<S>, i: number) => T
): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>
<A, B>(
self: NonEmptyChunk<A>,
f: (a: A, i: number) => NonEmptyChunk<B>
): NonEmptyChunk<B>
<A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>Applies a function to each element in a chunk and returns a new chunk containing the concatenated mapped elements.
Example (Flat mapping chunks)
import { Chunk } from "effect"
const chunk = Chunk.make(1, 2, 3)
const duplicated = Chunk.flatMap(chunk, (n) => Chunk.make(n, n))
console.log(Chunk.toArray(duplicated)) // [1, 1, 2, 2, 3, 3]
// Flattening nested arrays
const words = Chunk.make("hello", "world")
const letters = Chunk.flatMap(
words,
(word) => Chunk.fromIterable(word.split(""))
)
console.log(Chunk.toArray(letters)) // ["h", "e", "l", "l", "o", "w", "o", "r", "l", "d"]
// With index parameter
const indexed = Chunk.flatMap(chunk, (n, i) => Chunk.make(n + i))
console.log(Chunk.toArray(indexed)) // [1, 3, 5]sequencing
Source effect/Chunk.ts:116817 lines
export const const flatMap: {
<S extends Chunk<any>, T extends Chunk<any>>(
f: (a: Chunk.Infer<S>, i: number) => T
): (
self: S
) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>
<A, B>(
self: NonEmptyChunk<A>,
f: (a: A, i: number) => NonEmptyChunk<B>
): NonEmptyChunk<B>
<A, B>(
self: Chunk<A>,
f: (a: A, i: number) => Chunk<B>
): Chunk<B>
}
Applies a function to each element in a chunk and returns a new chunk containing the concatenated mapped elements.
Example (Flat mapping chunks)
import { Chunk } from "effect"
const chunk = Chunk.make(1, 2, 3)
const duplicated = Chunk.flatMap(chunk, (n) => Chunk.make(n, n))
console.log(Chunk.toArray(duplicated)) // [1, 1, 2, 2, 3, 3]
// Flattening nested arrays
const words = Chunk.make("hello", "world")
const letters = Chunk.flatMap(
words,
(word) => Chunk.fromIterable(word.split(""))
)
console.log(Chunk.toArray(letters)) // ["h", "e", "l", "l", "o", "w", "o", "r", "l", "d"]
// With index parameter
const indexed = Chunk.flatMap(chunk, (n, i) => Chunk.make(n + i))
console.log(Chunk.toArray(indexed)) // [1, 3, 5]
flatMap: {
<function (type parameter) S in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>S extends interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<any>, function (type parameter) T in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>T extends interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<any>>(
f: (a: Chunk.Infer<S>, i: number) => Tf: (a: Chunk.Infer<S>a: Chunk.type Chunk<out A>.Infer<S extends Chunk<any>> = S extends Chunk<infer A> ? A : neverInfers the element type of a Chunk.
Example (Inferring element types)
import type { Chunk } from "effect"
declare const numberChunk: Chunk.Chunk<number>
declare const stringChunk: Chunk.Chunk<string>
type NumberType = Chunk.Chunk.Infer<typeof numberChunk> // number
type StringType = Chunk.Chunk.Infer<typeof stringChunk> // string
Infer<function (type parameter) S in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>S>, i: numberi: number) => function (type parameter) T in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>T
): (self: S extends Chunk<any>self: function (type parameter) S in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>S) => Chunk.type Chunk<out A>.AndNonEmpty<S extends Chunk<any>, T extends Chunk<any>, A> = S extends NonEmptyChunk<any> ? T extends NonEmptyChunk<any> ? NonEmptyChunk<A> : Chunk<A> : Chunk<A>Creates a non-empty Chunk only if both inputs are non-empty.
Example (Requiring non-emptiness from both inputs)
import type { Chunk } from "effect"
declare const emptyChunk: Chunk.Chunk<number>
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type Result1 = Chunk.Chunk.AndNonEmpty<
typeof emptyChunk,
typeof emptyChunk,
string
> // Chunk.Chunk<string>
type Result2 = Chunk.Chunk.AndNonEmpty<
typeof emptyChunk,
typeof nonEmptyChunk,
string
> // Chunk.Chunk<string>
type Result3 = Chunk.Chunk.AndNonEmpty<
typeof nonEmptyChunk,
typeof nonEmptyChunk,
string
> // Chunk.NonEmptyChunk<string>
AndNonEmpty<function (type parameter) S in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>S, function (type parameter) T in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>T, Chunk.type Chunk<out A>.Infer<S extends Chunk<any>> = S extends Chunk<infer A> ? A : neverInfers the element type of a Chunk.
Example (Inferring element types)
import type { Chunk } from "effect"
declare const numberChunk: Chunk.Chunk<number>
declare const stringChunk: Chunk.Chunk<string>
type NumberType = Chunk.Chunk.Infer<typeof numberChunk> // number
type StringType = Chunk.Chunk.Infer<typeof stringChunk> // string
Infer<function (type parameter) T in <S extends Chunk<any>, T extends Chunk<any>>(f: (a: Chunk.Infer<S>, i: number) => T): (self: S) => Chunk.AndNonEmpty<S, T, Chunk.Infer<T>>T>>
<function (type parameter) A in <A, B>(self: NonEmptyChunk<A>, f: (a: A, i: number) => NonEmptyChunk<B>): NonEmptyChunk<B>A, function (type parameter) B in <A, B>(self: NonEmptyChunk<A>, f: (a: A, i: number) => NonEmptyChunk<B>): NonEmptyChunk<B>B>(self: NonEmptyChunk<A>(parameter) self: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
interface NonEmptyChunk<out A>A non-empty Chunk guaranteed to contain at least one element.
Example (Working with non-empty chunks)
import { Chunk } from "effect"
const nonEmptyChunk: Chunk.NonEmptyChunk<number> = Chunk.make(1, 2, 3)
console.log(Chunk.headNonEmpty(nonEmptyChunk)) // 1
console.log(Chunk.lastNonEmpty(nonEmptyChunk)) // 3
NonEmptyChunk<function (type parameter) A in <A, B>(self: NonEmptyChunk<A>, f: (a: A, i: number) => NonEmptyChunk<B>): NonEmptyChunk<B>A>, f: (a: A, i: number) => NonEmptyChunk<B>f: (a: Aa: function (type parameter) A in <A, B>(self: NonEmptyChunk<A>, f: (a: A, i: number) => NonEmptyChunk<B>): NonEmptyChunk<B>A, i: numberi: number) => interface NonEmptyChunk<out A>A non-empty Chunk guaranteed to contain at least one element.
Example (Working with non-empty chunks)
import { Chunk } from "effect"
const nonEmptyChunk: Chunk.NonEmptyChunk<number> = Chunk.make(1, 2, 3)
console.log(Chunk.headNonEmpty(nonEmptyChunk)) // 1
console.log(Chunk.lastNonEmpty(nonEmptyChunk)) // 3
NonEmptyChunk<function (type parameter) B in <A, B>(self: NonEmptyChunk<A>, f: (a: A, i: number) => NonEmptyChunk<B>): NonEmptyChunk<B>B>): interface NonEmptyChunk<out A>A non-empty Chunk guaranteed to contain at least one element.
Example (Working with non-empty chunks)
import { Chunk } from "effect"
const nonEmptyChunk: Chunk.NonEmptyChunk<number> = Chunk.make(1, 2, 3)
console.log(Chunk.headNonEmpty(nonEmptyChunk)) // 1
console.log(Chunk.lastNonEmpty(nonEmptyChunk)) // 3
NonEmptyChunk<function (type parameter) B in <A, B>(self: NonEmptyChunk<A>, f: (a: A, i: number) => NonEmptyChunk<B>): NonEmptyChunk<B>B>
<function (type parameter) A in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>A, function (type parameter) B in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>B>(self: Chunk<A>(parameter) self: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<function (type parameter) A in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>A>, f: (a: A, i: number) => Chunk<B>f: (a: Aa: function (type parameter) A in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>A, i: numberi: number) => interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<function (type parameter) B in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>B>): interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<function (type parameter) B in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>B>
} = dual<(...args: Array<any>) => any, <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>) => Chunk<B>>(arity: 2, body: <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>) => Chunk<B>): ((...args: Array<any>) => any) & (<A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>) => Chunk<B>) (+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(2, <function (type parameter) A in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>A, function (type parameter) B in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>B>(self: Chunk<A>(parameter) self: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<function (type parameter) A in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>A>, f: (a: A, i: number) => Chunk<B>f: (a: Aa: function (type parameter) A in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>A, i: numberi: number) => interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<function (type parameter) B in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>B>) => {
if (self: Chunk<A>(parameter) self: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
Chunk<A>.backing: Backing<A>backing._tag: | "IArray"
| "IConcat"
| "ISingleton"
| "IEmpty"
| "ISlice"
f: (a: A, i: number) => Chunk<B>f(self: Chunk<A>(parameter) self: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
Chunk<A>.backing: ISingleton<A>(property) Chunk<A>.backing: {
_tag: "ISingleton";
a: A;
}
ISingleton<A>.a: Aa, 0)
}
let let out: Chunk<B>let out: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
interface Chunk<out A>A Chunk is an immutable, ordered collection optimized for efficient concatenation and access patterns.
Example (Inspecting chunk values)
import { Chunk } from "effect"
const chunk: Chunk.Chunk<number> = Chunk.make(1, 2, 3)
console.log(chunk.length) // 3
console.log(Chunk.toArray(chunk)) // [1, 2, 3]
A namespace containing utility types for Chunk operations.
Example (Working with Chunk utility types)
import type { Chunk } from "effect"
// Extract the element type from a Chunk
declare const chunk: Chunk.Chunk<string>
type ElementType = Chunk.Chunk.Infer<typeof chunk> // string
// Create a preserving non-emptiness
declare const nonEmptyChunk: Chunk.NonEmptyChunk<number>
type WithString = Chunk.Chunk.With<typeof nonEmptyChunk, string> // Chunk.NonEmptyChunk<string>
Chunk<function (type parameter) B in <A, B>(self: Chunk<A>, f: (a: A, i: number) => Chunk<B>): Chunk<B>B> = const _empty: Chunk<never>const _empty: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
let i: numberi = 0
for (const const k: Ak of self: Chunk<A>(parameter) self: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
let out: Chunk<B>let out: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
const appendAll: {
<S extends Chunk<any>, T extends Chunk<any>>(
that: T
): (
self: S
) => Chunk.OrNonEmpty<
S,
T,
Chunk.Infer<S> | Chunk.Infer<T>
>
<A, B>(
self: Chunk<A>,
that: NonEmptyChunk<B>
): NonEmptyChunk<A | B>
<A, B>(
self: NonEmptyChunk<A>,
that: Chunk<B>
): NonEmptyChunk<A | B>
<A, B>(self: Chunk<A>, that: Chunk<B>): Chunk<
A | B
>
}
let out: Chunk<B>let out: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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: A, i: number) => Chunk<B>f(const k: Ak, let i: numberi++))
}
return let out: Chunk<B>let out: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
Referenced by 2 symbols