mirror of
https://github.com/idanoo/GoScrobble.git
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114 lines
4.3 KiB
Plaintext
114 lines
4.3 KiB
Plaintext
// @flow
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export interface Patch {
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op: "replace" | "remove" | "add";
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path: (string | number)[];
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value?: any;
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}
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export type PatchListener = (patches: Patch[], inversePatches: Patch[]) => void
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type Base = {...} | Array<any>
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interface IProduce {
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/**
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* Immer takes a state, and runs a function against it.
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* That function can freely mutate the state, as it will create copies-on-write.
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* This means that the original state will stay unchanged, and once the function finishes, the modified state is returned.
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*
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* If the first argument is a function, this is interpreted as the recipe, and will create a curried function that will execute the recipe
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* any time it is called with the current state.
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*
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* @param currentState - the state to start with
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* @param recipe - function that receives a proxy of the current state as first argument and which can be freely modified
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* @param initialState - if a curried function is created and this argument was given, it will be used as fallback if the curried function is called with a state of undefined
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* @returns The next state: a new state, or the current state if nothing was modified
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*/
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<S: Base>(
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currentState: S,
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recipe: (draftState: S) => S | void,
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patchListener?: PatchListener
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): S;
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// curried invocations with initial state
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<S: Base, A = void, B = void, C = void>(
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recipe: (draftState: S, a: A, b: B, c: C, ...extraArgs: any[]) => S | void,
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initialState: S
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): (currentState: S | void, a: A, b: B, c: C, ...extraArgs: any[]) => S;
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// curried invocations without initial state
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<S: Base, A = void, B = void, C = void>(
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recipe: (draftState: S, a: A, b: B, c: C, ...extraArgs: any[]) => S | void
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): (currentState: S, a: A, b: B, c: C, ...extraArgs: any[]) => S;
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}
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interface IProduceWithPatches {
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/**
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* Like `produce`, but instead of just returning the new state,
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* a tuple is returned with [nextState, patches, inversePatches]
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*
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* Like produce, this function supports currying
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*/
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<S: Base>(
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currentState: S,
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recipe: (draftState: S) => S | void
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): [S, Patch[], Patch[]];
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// curried invocations with initial state
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<S: Base, A = void, B = void, C = void>(
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recipe: (draftState: S, a: A, b: B, c: C, ...extraArgs: any[]) => S | void,
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initialState: S
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): (currentState: S | void, a: A, b: B, c: C, ...extraArgs: any[]) => [S, Patch[], Patch[]];
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// curried invocations without initial state
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<S: Base, A = void, B = void, C = void>(
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recipe: (draftState: S, a: A, b: B, c: C, ...extraArgs: any[]) => S | void
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): (currentState: S, a: A, b: B, c: C, ...extraArgs: any[]) => [S, Patch[], Patch[]];
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}
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declare export var produce: IProduce
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declare export default IProduce
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declare export var produceWithPatches: IProduceWithPatches
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declare export var nothing: typeof undefined
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declare export var immerable: Symbol
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/**
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* Automatically freezes any state trees generated by immer.
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* This protects against accidental modifications of the state tree outside of an immer function.
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* This comes with a performance impact, so it is recommended to disable this option in production.
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* By default it is turned on during local development, and turned off in production.
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*/
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declare export function setAutoFreeze(autoFreeze: boolean): void
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/**
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* Manually override whether proxies should be used.
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* By default done by using feature detection
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*/
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declare export function setUseProxies(useProxies: boolean): void
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declare export function applyPatches<S>(state: S, patches: Patch[]): S
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declare export function original<S>(value: S): S
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declare export function current<S>(value: S): S
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declare export function isDraft(value: any): boolean
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/**
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* Creates a mutable draft from an (immutable) object / array.
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* The draft can be modified until `finishDraft` is called
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*/
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declare export function createDraft<T>(base: T): T
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/**
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* Given a draft that was created using `createDraft`,
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* finalizes the draft into a new immutable object.
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* Optionally a patch-listener can be provided to gather the patches that are needed to construct the object.
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*/
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declare export function finishDraft<T>(base: T, listener?: PatchListener): T
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declare export function enableES5(): void
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declare export function enableMapSet(): void
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declare export function enablePatches(): void
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declare export function enableAllPlugins(): void
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declare export function freeze<T>(obj: T, freeze?: boolean): T
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