import { StoreApi } from 'zustand';

/**
 * Copied from the zustand file 'react.d.ts' on line 2
 */
type ExtractState<S> = S extends {
    getState: () => infer T;
} ? T : never;
/**
 * Types a partial object based on the type of the original and the type of an array of keys.
 */
type PartObjFromArrOfKeys<Obj, KeyArray extends readonly (keyof Obj)[]> = {
    [Key in KeyArray[number]]: Obj[Key];
};
type ReadonlyStoreApi<T> = Pick<StoreApi<T>, 'getState' | 'getInitialState' | 'subscribe'>;

export { ExtractState, PartObjFromArrOfKeys, ReadonlyStoreApi };