import { LRUParam, UnregFn } from "./lru-map-set.js";
export interface KeyedIf<ITEM, V, K = string, CTX = unknown> {
    onSet(fn: (value: ITEM) => void): UnregFn;
    onDelete(fn: (value: ITEM) => void): UnregFn;
    setParam(params: Partial<KeyedNgOptions<K, ITEM, CTX>>): void;
    asyncGet(key: () => Promise<K>): Promise<V>;
    get(key: K | (() => K)): V;
    getItem(key: K, ctx?: unknown): ITEM;
    has(key: K | (() => K)): boolean;
    delete(key: K): void;
    values(): ITEM[];
    keys(): K[];
    forEach(fn: (v: ITEM, idx: number) => void): void;
    entries(): Iterable<[ITEM, number]>;
}
export type WritableValue<T> = Omit<T, "value"> & {
    value: T extends {
        value: infer V;
    } ? V : unknown;
};
export interface KeyedNgOptions<K, V, CTX> {
    readonly createValue: (keyItem: KeyedNgItem<K, V, CTX>) => V;
    readonly key2string?: (key: K) => string;
    readonly ctx?: CTX;
    readonly resetAfter?: number;
    readonly lru?: Partial<LRUParam<unknown, string>>;
}
export interface KeyedNgItem<K, V, CTX> {
    readonly refKey: string;
    readonly givenKey: K;
    readonly value: V;
    readonly ctx: CTX;
}
export type KeyedNgItemWithoutValue<K, CTX> = Omit<KeyedNgItem<K, never, CTX>, "value">;
export declare class KeyedNg<K, V, CTX> implements KeyedIf<KeyedNgItem<K, V, CTX>, V, K, CTX> {
    #private;
    readonly opts: Required<Omit<KeyedNgOptions<K, V, CTX>, "lru">>;
    constructor(opts: KeyedNgOptions<K, V, CTX>);
    onSet(fn: (value: KeyedNgItem<K, V, CTX>) => void): UnregFn;
    onDelete(fn: (value: KeyedNgItem<K, V, CTX>) => void): UnregFn;
    setParam(params: Partial<KeyedNgOptions<K, KeyedNgItem<K, V, CTX>, CTX>>): void;
    asyncGet(key: () => Promise<K>): Promise<V>;
    has(keyOfFnKey: K | (() => K)): boolean;
    delete(key: K): void;
    keys(): K[];
    forEach(fn: (v: KeyedNgItem<K, V, CTX>, idx: number) => void): void;
    entries(): Iterable<[KeyedNgItem<K, V, CTX>, number]>;
    getItem(key: K, ctx?: CTX): KeyedNgItem<K, V, CTX>;
    get(key: K | (() => K), ctx?: CTX): V;
    values(): KeyedNgItem<K, V, CTX>[];
}
//# sourceMappingURL=keyed-ng.d.ts.map