import { RMapBase } from '@rimbu/collection-types/map-custom';
import type { HashMap } from '@rimbu/hashed/map';
import type { DistanceFunction } from '@rimbu/proximity/common';
import type { ProximityMap } from '@rimbu/proximity/map';
/**
 * Default concrete implementation of {@link ProximityMap.Context}.<br/>
 * <br/>
 * It wires the configured {@link DistanceFunction} and `HashMap` context together and
 * is used by the `ProximityMap` factory methods to create new instances.
 *
 * @typeparam UK - the upper key type bound for which the context can be used
 */
export declare class ProximityMapContext<UK> extends RMapBase.ContextBase<UK, ProximityMap.Types> implements ProximityMap.Context<UK> {
    readonly distanceFunction: DistanceFunction<UK>;
    readonly hashMapContext: HashMap.Context<UK>;
    readonly _empty: ProximityMap<any, any>;
    constructor(distanceFunction: DistanceFunction<UK>, hashMapContext: HashMap.Context<UK>);
    readonly typeTag = "ProximityMap";
    isValidKey(key: any): key is UK;
    isNonEmptyInstance(source: any): source is any;
    readonly builder: <K extends UK, V>() => ProximityMap.Builder<K, V>;
    createBuilder<K extends UK, V>(source?: ProximityMap.NonEmpty<K, V>): ProximityMap.Builder<K, V>;
}