import { ArrayIterable } from './array-iterable.js';
import { Option } from './option.js';
import { HashSet } from './hashset.js';
import { Collection } from './collection.js';
export declare type Tuple2<K, V> = [K, V];
export declare abstract class AbstractMap<K, V, S extends AbstractMap<K, V, any>> extends ArrayIterable<Tuple2<K, V>, S> {
    protected readonly map: Map<K, V>;
    protected constructor(map: Map<K, V>);
    get size(): number;
    get isEmpty(): boolean;
    get(key: K): Option<V>;
    getOrElse(key: K, defaultValue: () => V): V;
    getOrElseValue(key: K, defaultValue: V): V;
    get keySet(): HashSet<K>;
    get keyIterator(): IterableIterator<K>;
    get keys(): Collection<K>;
    get values(): Collection<V>;
    get valueIterator(): IterableIterator<V>;
    get entries(): Collection<Tuple2<K, V>>;
    get entriesIterator(): IterableIterator<Tuple2<K, V>>;
    containsKey(key: K): boolean;
    get toCollection(): Collection<Tuple2<K, V>>;
    get toMap(): Map<K, V>;
    get toArray(): Array<Tuple2<K, V>>;
}