import { Entity, KeyOf, Listable } from '../base.dto';
import { IBaseRequest, ISort } from '../base.request';
export type CursorDirection = 'asc' | 'desc';
export type CursorValueType = 'boolean' | 'date' | 'null' | 'number' | 'objectId' | 'string';
export interface ICursorValue {
    type: CursorValueType;
    value: boolean | number | string | null;
}
export interface ICursorPayload {
    version: 1;
    keys: string[];
    directions: CursorDirection[];
    values: ICursorValue[];
}
export interface ICursorDefinition {
    keys: string[];
    directions: CursorDirection[];
    values?: unknown[];
}
export interface ICursorDefinitionOptions<T extends Entity> {
    defaultKeys: string[];
    tieBreakerKeys?: string[];
    defaultDirection?: CursorDirection;
    cursorKey?: Listable<KeyOf<T>>;
    cursor?: string;
    sort?: ISort<T>;
}
export declare class CursorPagination {
    private static readonly FIELD_PATTERN;
    static isCursorRequest<T extends Entity>(query: IBaseRequest<T>): boolean;
    static getLimit(limit?: number, fallback?: number): number;
    static resolve<T extends Entity>(options: ICursorDefinitionOptions<T>): ICursorDefinition;
    static toSort<T extends Entity>(keys: string[], directions: CursorDirection[]): ISort<T>;
    static slice<T extends Entity>(items: T[], limit: number, keys: string[], directions: CursorDirection[]): {
        hasNextPage: boolean;
        items: T[];
        nextCursor: string | null;
    };
    private static resolveKeys;
    private static toKeys;
    private static getDirection;
    private static flattenSort;
    private static assertSafeKey;
    private static encode;
    private static decode;
    private static serializeValue;
    private static deserializeValue;
}
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