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/**
* @since 2.0.0
*/
import type { Chunk } from "./Chunk.js"
import type { Context } from "./Context.js"
import type { Either } from "./Either.js"
import type { Equal } from "./Equal.js"
import * as Dual from "./Function.js"
import type { HashMap } from "./HashMap.js"
import type { HashSet } from "./HashSet.js"
import * as internal from "./internal/differ.js"
import * as ChunkPatch from "./internal/differ/chunkPatch.js"
import * as ContextPatch from "./internal/differ/contextPatch.js"
import * as HashMapPatch from "./internal/differ/hashMapPatch.js"
import * as HashSetPatch from "./internal/differ/hashSetPatch.js"
import * as OrPatch from "./internal/differ/orPatch.js"
import * as ReadonlyArrayPatch from "./internal/differ/readonlyArrayPatch.js"
import type { Pipeable } from "./Pipeable.js"
import type * as Types from "./Types.js"
/**
* @since 2.0.0
* @category symbol
*/
export const TypeId: unique symbol = internal.DifferTypeId as TypeId
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof TypeId
/**
* A `Differ<Value, Patch>` knows how to compare an old value and new value of
* type `Value` to produce a patch of type `Patch` that describes the
* differences between those values. A `Differ` also knows how to apply a patch
* to an old value to produce a new value that represents the old value updated
* with the changes described by the patch.
*
* A `Differ` can be used to construct a `FiberRef` supporting compositional
* updates using the `FiberRef.makePatch` constructor.
*
* The `Differ` companion object contains constructors for `Differ` values for
* common data types such as `Chunk`, `HashMap`, and `HashSet``. In addition,
* `Differ`values can be transformed using the `transform` operator and combined
* using the `orElseEither` and `zip` operators. This allows creating `Differ`
* values for arbitrarily complex data types compositionally.
*
* @since 2.0.0
* @category models
*/
export interface Differ<in out Value, in out Patch> extends Pipeable {
readonly [TypeId]: {
readonly _V: Types.Invariant<Value>
readonly _P: Types.Invariant<Patch>
}
readonly empty: Patch
diff(oldValue: Value, newValue: Value): Patch
combine(first: Patch, second: Patch): Patch
patch(patch: Patch, oldValue: Value): Value
}
const ChunkPatchTypeId: unique symbol = ChunkPatch.ChunkPatchTypeId as Differ.Chunk.TypeId
const ContextPatchTypeId: unique symbol = ContextPatch.ContextPatchTypeId as Differ.Context.TypeId
const HashMapPatchTypeId: unique symbol = HashMapPatch.HashMapPatchTypeId as Differ.HashMap.TypeId
const HashSetPatchTypeId: unique symbol = HashSetPatch.HashSetPatchTypeId as Differ.HashSet.TypeId
const OrPatchTypeId: unique symbol = OrPatch.OrPatchTypeId as Differ.Or.TypeId
const ReadonlyArrayPatchTypeId: unique symbol = ReadonlyArrayPatch
.ReadonlyArrayPatchTypeId as Differ.ReadonlyArray.TypeId
/**
* @since 2.0.0
*/
export declare namespace Differ {
/**
* @since 2.0.0
*/
export namespace Context {
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof ContextPatchTypeId
/**
* A `Patch<Input, Output>` describes an update that transforms a `Env<Input>`
* to a `Env<Output>` as a data structure. This allows combining updates to
* different services in the environment in a compositional way.
*
* @since 2.0.0
* @category models
*/
export interface Patch<in Input, out Output> extends Equal {
readonly [ContextPatchTypeId]: {
readonly _Input: Types.Contravariant<Input>
readonly _Output: Types.Covariant<Output>
}
}
}
/**
* @since 2.0.0
*/
export namespace Chunk {
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof ChunkPatchTypeId
/**
* A patch which describes updates to a chunk of values.
*
* @since 2.0.0
* @category models
*/
export interface Patch<in out Value, in out Patch> extends Equal {
readonly [ChunkPatchTypeId]: {
readonly _Value: Types.Invariant<Value>
readonly _Patch: Types.Invariant<Patch>
}
}
}
/**
* @since 2.0.0
*/
export namespace HashMap {
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof HashMapPatchTypeId
/**
* A patch which describes updates to a map of keys and values.
*
* @since 2.0.0
* @category models
*/
export interface Patch<in out Key, in out Value, in out Patch> extends Equal {
readonly [HashMapPatchTypeId]: {
readonly _Key: Types.Invariant<Key>
readonly _Value: Types.Invariant<Value>
readonly _Patch: Types.Invariant<Patch>
}
}
}
/**
* @since 2.0.0
*/
export namespace HashSet {
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof HashSetPatchTypeId
/**
* A patch which describes updates to a set of values.
*
* @since 2.0.0
* @category models
*/
export interface Patch<in out Value> extends Equal {
readonly [HashSetPatchTypeId]: {
readonly _Value: Types.Invariant<Value>
}
}
}
/**
* @since 2.0.0
*/
export namespace Or {
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof OrPatchTypeId
/**
* A patch which describes updates to either one value or another.
*
* @since 2.0.0
* @category models
*/
export interface Patch<in out Value, in out Value2, in out Patch, in out Patch2> extends Equal {
readonly [OrPatchTypeId]: {
readonly _Value: Types.Invariant<Value>
readonly _Value2: Types.Invariant<Value2>
readonly _Patch: Types.Invariant<Patch>
readonly _Patch2: Types.Invariant<Patch2>
}
}
}
/**
* @since 2.0.0
*/
export namespace ReadonlyArray {
/**
* @since 2.0.0
* @category symbol
*/
export type TypeId = typeof ReadonlyArrayPatchTypeId
/**
* A patch which describes updates to a ReadonlyArray of values.
*
* @since 2.0.0
* @category models
*/
export interface Patch<in out Value, in out Patch> extends Equal {
readonly [ReadonlyArrayPatchTypeId]: {
readonly _Value: Types.Invariant<Value>
readonly _Patch: Types.Invariant<Patch>
}
}
}
}
/**
* An empty patch that describes no changes.
*
* @since 2.0.0
* @category patch
*/
export const empty: <Value, Patch>(self: Differ<Value, Patch>) => Patch = (
self
) => self.empty
/**
* @since 2.0.0
* @category patch
*/
export const diff: {
/**
* @since 2.0.0
* @category patch
*/
<Value>(oldValue: Value, newValue: Value): <Patch>(
self: Differ<Value, Patch>
) => Patch
/**
* @since 2.0.0
* @category patch
*/
<Value, Patch>(self: Differ<Value, Patch>, oldValue: Value, newValue: Value): Patch
} = Dual.dual(
3,
<Value, Patch>(
self: Differ<Value, Patch>,
oldValue: Value,
newValue: Value
): Patch => self.diff(oldValue, newValue)
)
/**
* Combines two patches to produce a new patch that describes the updates of
* the first patch and then the updates of the second patch. The combine
* operation should be associative. In addition, if the combine operation is
* commutative then joining multiple fibers concurrently will result in
* deterministic `FiberRef` values.
*
* @since 2.0.0
* @category patch
*/
export const combine: {
/**
* Combines two patches to produce a new patch that describes the updates of
* the first patch and then the updates of the second patch. The combine
* operation should be associative. In addition, if the combine operation is
* commutative then joining multiple fibers concurrently will result in
* deterministic `FiberRef` values.
*
* @since 2.0.0
* @category patch
*/
<Patch>(first: Patch, second: Patch): <Value>(
self: Differ<Value, Patch>
) => Patch
/**
* Combines two patches to produce a new patch that describes the updates of
* the first patch and then the updates of the second patch. The combine
* operation should be associative. In addition, if the combine operation is
* commutative then joining multiple fibers concurrently will result in
* deterministic `FiberRef` values.
*
* @since 2.0.0
* @category patch
*/
<Value, Patch>(self: Differ<Value, Patch>, first: Patch, second: Patch): Patch
} = Dual.dual(
3,
<Value, Patch>(
self: Differ<Value, Patch>,
first: Patch,
second: Patch
): Patch => self.combine(first, second)
)
/**
* Applies a patch to an old value to produce a new value that is equal to the
* old value with the updates described by the patch.
*
* @since 2.0.0
* @category patch
*/
export const patch: {
/**
* Applies a patch to an old value to produce a new value that is equal to the
* old value with the updates described by the patch.
*
* @since 2.0.0
* @category patch
*/
<Patch, Value>(patch: Patch, oldValue: Value): (
self: Differ<Value, Patch>
) => Value
/**
* Applies a patch to an old value to produce a new value that is equal to the
* old value with the updates described by the patch.
*
* @since 2.0.0
* @category patch
*/
<Patch, Value>(self: Differ<Value, Patch>, patch: Patch, oldValue: Value): Value
} = Dual.dual(
3,
<Patch, Value>(
self: Differ<Value, Patch>,
patch: Patch,
oldValue: Value
): Value => self.patch(patch, oldValue)
)
/**
* Constructs a new `Differ`.
*
* @since 2.0.0
* @category constructors
*/
export const make: <Value, Patch>(params: {
readonly empty: Patch
readonly diff: (oldValue: Value, newValue: Value) => Patch
readonly combine: (first: Patch, second: Patch) => Patch
readonly patch: (patch: Patch, oldValue: Value) => Value
}) => Differ<Value, Patch> = internal.make
/**
* Constructs a differ that knows how to diff `Env` values.
*
* @since 2.0.0
* @category constructors
*/
export const environment: <A>() => Differ<
Context<A>,
Differ.Context.Patch<A, A>
> = internal.environment
/**
* Constructs a differ that knows how to diff a `Chunk` of values given a
* differ that knows how to diff the values.
*
* @since 2.0.0
* @category constructors
*/
export const chunk: <Value, Patch>(
differ: Differ<Value, Patch>
) => Differ<Chunk<Value>, Differ.Chunk.Patch<Value, Patch>> = internal.chunk
/**
* Constructs a differ that knows how to diff a `HashMap` of keys and values given
* a differ that knows how to diff the values.
*
* @since 2.0.0
* @category constructors
*/
export const hashMap: <Key, Value, Patch>(
differ: Differ<Value, Patch>
) => Differ<HashMap<Key, Value>, Differ.HashMap.Patch<Key, Value, Patch>> = internal.hashMap
/**
* Constructs a differ that knows how to diff a `HashSet` of values.
*
* @since 2.0.0
* @category constructors
*/
export const hashSet: <Value>() => Differ<
HashSet<Value>,
Differ.HashSet.Patch<Value>
> = internal.hashSet
/**
* Combines this differ and the specified differ to produce a differ that
* knows how to diff the sum of their values.
*
* @since 2.0.0
*/
export const orElseEither: {
/**
* Combines this differ and the specified differ to produce a differ that
* knows how to diff the sum of their values.
*
* @since 2.0.0
*/
<Value2, Patch2>(that: Differ<Value2, Patch2>): <Value, Patch>(
self: Differ<Value, Patch>
) => Differ<
Either<Value2, Value>,
Differ.Or.Patch<Value, Value2, Patch, Patch2>
>
/**
* Combines this differ and the specified differ to produce a differ that
* knows how to diff the sum of their values.
*
* @since 2.0.0
*/
<Value, Patch, Value2, Patch2>(self: Differ<Value, Patch>, that: Differ<Value2, Patch2>): Differ<
Either<Value2, Value>,
Differ.Or.Patch<Value, Value2, Patch, Patch2>
>
} = internal.orElseEither
/**
* Constructs a differ that knows how to diff a `ReadonlyArray` of values.
*
* @since 2.0.0
* @category constructors
*/
export const readonlyArray: <Value, Patch>(
differ: Differ<Value, Patch>
) => Differ<ReadonlyArray<Value>, Differ.ReadonlyArray.Patch<Value, Patch>> = internal.readonlyArray
/**
* Transforms the type of values that this differ knows how to differ using
* the specified functions that map the new and old value types to each other.
*
* @since 2.0.0
*/
export const transform: {
/**
* Transforms the type of values that this differ knows how to differ using
* the specified functions that map the new and old value types to each other.
*
* @since 2.0.0
*/
<Value, Value2>(
options: {
readonly toNew: (value: Value) => Value2
readonly toOld: (value: Value2) => Value
}
): <Patch>(self: Differ<Value, Patch>) => Differ<Value2, Patch>
/**
* Transforms the type of values that this differ knows how to differ using
* the specified functions that map the new and old value types to each other.
*
* @since 2.0.0
*/
<Value, Patch, Value2>(
self: Differ<Value, Patch>,
options: {
readonly toNew: (value: Value) => Value2
readonly toOld: (value: Value2) => Value
}
): Differ<Value2, Patch>
} = internal.transform
/**
* Constructs a differ that just diffs two values by returning a function that
* sets the value to the new value. This differ does not support combining
* multiple updates to the value compositionally and should only be used when
* there is no compositional way to update them.
*
* @since 2.0.0
*/
export const update: <A>() => Differ<A, (a: A) => A> = internal.update
/**
* A variant of `update` that allows specifying the function that will be used
* to combine old values with new values.
*
* @since 2.0.0
*/
export const updateWith: <A>(f: (x: A, y: A) => A) => Differ<A, (a: A) => A> = internal.updateWith
/**
* Combines this differ and the specified differ to produce a new differ that
* knows how to diff the product of their values.
*
* @since 2.0.0
*/
export const zip: {
/**
* Combines this differ and the specified differ to produce a new differ that
* knows how to diff the product of their values.
*
* @since 2.0.0
*/
<Value2, Patch2>(that: Differ<Value2, Patch2>): <Value, Patch>(
self: Differ<Value, Patch>
) => Differ<
readonly [Value, Value2], // readonly because invariant
readonly [Patch, Patch2] // readonly because invariant
>
/**
* Combines this differ and the specified differ to produce a new differ that
* knows how to diff the product of their values.
*
* @since 2.0.0
*/
<Value, Patch, Value2, Patch2>(self: Differ<Value, Patch>, that: Differ<Value2, Patch2>): Differ<
readonly [Value, Value2], // readonly because invariant
readonly [Patch, Patch2] // readonly because invariant
>
} = internal.zip