import { Box } from "./box";
import { DefaultOrFunc } from "./fn";
import { Option } from "./option";
import { MapKey, MutableMapLike, MapValue, MapLike } from "./types";
/** Extended Map */
export declare function MapEx<M extends MapLike<any, any>>(map: M): ExMap<M>;
/** Mutable Extended Map */
export declare function MutMapEx<M extends MutableMapLike<any, any>>(map: M): MutableExMap<M>;
/** Extended Map */
export declare class ExMap<M extends MapLike<any, any>> implements Box<M>, MapLike<MapKey<M>, MapValue<M>> {
    val: M;
    constructor(val: M);
    get(key: MapKey<M>): MapValue<M> | undefined;
    has(key: MapKey<M>): boolean;
    /** If it does not exist, return to the default value */
    getOrDefault(key: MapKey<M>, defv: DefaultOrFunc<MapValue<M>>): MapValue<M>;
    /** Get and pass to the callback */
    getAndThen(key: MapKey<M>, then: (val: MapValue<M>) => any): void;
    /** Get as Promise*/
    getAndThen(key: MapKey<M>): Promise<MapValue<M>>;
    /** Try to get
     * Option instead of Maybe to ensure that the value of None can be distinguished */
    tryGet(key: MapKey<M>): Option<MapValue<M>>;
}
/** Mutable Extended Map */
export declare class MutableExMap<M extends MutableMapLike<any, any>> extends ExMap<M> implements MutableMapLike<MapKey<M>, MapValue<M>> {
    constructor(val: M);
    set(key: MapKey<M>, value: MapValue<M>): this;
    delete(key: MapKey<M>): boolean;
    /** Get if has, add if not */
    getOrAdd(key: MapKey<M>, init: () => MapValue<M>): MapValue<M>;
}