/**
 * This file is part of the NocoBase (R) project.
 * Copyright (c) 2020-2024 NocoBase Co., Ltd.
 * Authors: NocoBase Team.
 *
 * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
 * For more information, please refer to: https://www.nocobase.com/agreement.
 */
declare const PRESET_KEY_LIST: readonly ["today", "now", "yesterday", "tomorrow", "thisWeek", "lastWeek", "nextWeek", "thisMonth", "lastMonth", "nextMonth", "thisQuarter", "lastQuarter", "nextQuarter", "thisYear", "lastYear", "nextYear"];
export type CtxDatePreset = (typeof PRESET_KEY_LIST)[number];
export type CtxDateRelativeDirection = 'next' | 'past';
export type CtxDateRelativeUnit = 'day' | 'week' | 'month' | 'year';
export type CtxDateExpressionConfig = {
    kind: 'exact';
    value: string | [string, string];
    format?: string;
} | {
    kind: 'relative';
    direction: CtxDateRelativeDirection;
    amount: number;
    unit: CtxDateRelativeUnit;
    format?: string;
} | {
    kind: 'preset';
    preset: CtxDatePreset;
    format?: string;
};
export declare function isCtxDatePathPrefix(pathSegments: string[]): boolean;
export declare function encodeBase64Url(input: string): string;
export declare function decodeBase64Url(input: string): string | undefined;
export declare function isCtxDateExpression(value: unknown): value is string;
export declare function isCompleteCtxDatePath(pathSegments: string[]): boolean;
export declare function parseCtxDateExpression(value: unknown): any;
export declare function parseCtxDateExpressionConfig(value: unknown): CtxDateExpressionConfig | undefined;
export declare function serializeCtxDateExpressionConfig(config: CtxDateExpressionConfig): string | undefined;
export declare function serializeCtxDateValue(value: unknown): string | undefined;
export declare function resolveCtxDatePath(pathSegments: string[]): any;
export {};