export declare class SparseMap<T> {
    private keyToIndex;
    private indexToKey;
    private indexToValue;
    get [Symbol.toStringTag](): string;
    get size(): number;
    get internalArray(): T[];
    entries(): IterableIterator<[key: number, value: T]>;
    keys(): IterableIterator<number>;
    values(): IterableIterator<T>;
    getInternalIndexOfKey(key: number): number | undefined;
    has(key: number): boolean;
    get(key: number): T | undefined;
    set(key: number, value: T): void;
    delete(key: number): void;
    clear(): void;
}