import { ReadonlySignal } from "@preact-signals/unified-signals";
import type { IfNever, Opaque, ReadonlyKeysOf, SetReadonly } from "type-fest";
import { AnyRecord } from "../hooks";
import { FlatStoreSetter } from "./setter";
export type FlatStore<T extends Record<any, any>> = Opaque<T, "@preact-signals/utils;flatStore">;
export type ReadonlyFlatStore<T extends Record<any, any>> = Readonly<FlatStore<T>>;
/**
 *
 * @param initialState this value will be **mutated** and proxied
 * @returns
 */
export declare const flatStore: <T extends Record<any, any>>(initialState: T) => FlatStore<T>;
type FlatStoreOfSignals = <T extends Record<any, any>>(initialState: T) => FlatStore<FlatStoreOfSignalsBody<T>>;
export type FlatStoreOfSignalsBody<T extends Record<any, any>> = SetReadonly<{
    [TKey in keyof T]: T[TKey] extends ReadonlySignal<infer TValue> ? TValue : T[TKey];
}, ReadonlySignalsKeys<T>>;
export type ReadonlySignalsKeys<T extends AnyRecord> = keyof {
    [TKey in keyof T as IfNever<ReadonlyKeysOf<T[TKey]>, never, T[TKey] extends ReadonlySignal<unknown> ? TKey : never>]: T[TKey];
};
/**
 *
 * @param initialState this value will be **mutated** and proxied
 * @returns
 */
export declare const flatStoreOfSignals: FlatStoreOfSignals;
export declare const createFlatStore: <T extends Record<any, any>>(initialState: T) => readonly [FlatStore<T>, FlatStoreSetter<T>];
export declare const createFlatStoreOfSignals: <T extends Record<any, any>>(initialState: T) => readonly [
    FlatStore<FlatStoreOfSignalsBody<T>>,
    FlatStoreSetter<FlatStoreOfSignalsBody<T>>
];
export {};