import { Event } from './event.js';
export interface ISplice<T> {
    readonly start: number;
    readonly deleteCount: number;
    readonly toInsert: readonly T[];
}
export interface ISpliceable<T> {
    splice(start: number, deleteCount: number, toInsert: readonly T[]): void;
}
export interface ISequence<T> {
    readonly elements: T[];
    readonly onDidSplice: Event<ISplice<T>>;
}
export declare class Sequence<T> implements ISequence<T>, ISpliceable<T> {
    readonly elements: T[];
    private readonly _onDidSplice;
    readonly onDidSplice: Event<ISplice<T>>;
    splice(start: number, deleteCount: number, toInsert?: readonly T[]): void;
}