26 lines
1.2 KiB
TypeScript
26 lines
1.2 KiB
TypeScript
import type { Draft } from 'immer';
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import type { StateCreator, StoreMutatorIdentifier } from '../vanilla.mjs';
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type Immer = <T, Mps extends [StoreMutatorIdentifier, unknown][] = [], Mcs extends [StoreMutatorIdentifier, unknown][] = []>(initializer: StateCreator<T, [...Mps, ['zustand/immer', never]], Mcs>) => StateCreator<T, Mps, [['zustand/immer', never], ...Mcs]>;
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declare module '../vanilla.mjs' {
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interface StoreMutators<S, A> {
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['zustand/immer']: WithImmer<S>;
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}
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}
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type Write<T, U> = Omit<T, keyof U> & U;
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type SkipTwo<T> = T extends {
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length: 0;
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} ? [] : T extends {
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length: 1;
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} ? [] : T extends {
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length: 0 | 1;
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} ? [] : T extends [unknown, unknown, ...infer A] ? A : T extends [unknown, unknown?, ...infer A] ? A : T extends [unknown?, unknown?, ...infer A] ? A : never;
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type WithImmer<S> = Write<S, StoreImmer<S>>;
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type StoreImmer<S> = S extends {
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getState: () => infer T;
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setState: infer SetState;
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} ? SetState extends (...a: infer A) => infer Sr ? {
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setState(nextStateOrUpdater: T | Partial<T> | ((state: Draft<T>) => void), shouldReplace?: boolean | undefined, ...a: SkipTwo<A>): Sr;
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} : never : never;
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export declare const immer: Immer;
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export {};
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