export interface KeyedArray<K, V> {
    key(index: number): K;
    push(value: V): number;
    swap(a: number, b: number): void;
    insert(index: number, value: V): void;
    remove(index: number): V | undefined;
    splice(index: number, count?: number): V[];
    splice(index: number, count: number, ...items: V[]): V[];
}
/** @deprecated use `KeyedArray` */
export type KeyedArray2<K, V> = KeyedArray<K, V>;
export declare class SimpleKeyedArray<K, T> implements KeyedArray<K, T> {
    protected readonly array: T[];
    protected readonly nextKey: () => K;
    protected changesPropagator: number;
    protected keys: K[];
    constructor(array: T[], nextKey: () => K);
    key(index: number): K;
    push(value: T): number;
    swap(a: number, b: number): void;
    insert(index: number, value: T): void;
    remove(index: number): T | undefined;
    splice(start: number, count: number, ...items: T[]): T[];
}