/**
 * 日期类型
 * @type {string[]}
 */
export declare const dateTypes: string[];
/**
 * 创建日期
 * @param val
 * @returns {string}
 */
export declare function createDate(val: any): string;
/**
 * 当前日期
 * @param split
 */
export declare function currentDate(split?: string): string;
/**
 * 获取当月的开始和结束时间
 */
export declare function currentMonthRange(): {
    startDate?: undefined;
    starDateStr?: undefined;
    lastDate?: undefined;
    lastDateStr?: undefined;
} | {
    startDate: Date;
    starDateStr: string;
    lastDate: Date;
    lastDateStr: string;
};
export declare function monthRange(date: Date): {
    startDate?: undefined;
    starDateStr?: undefined;
    lastDate?: undefined;
    lastDateStr?: undefined;
} | {
    startDate: Date;
    starDateStr: string;
    lastDate: Date;
    lastDateStr: string;
};
/**
 * 将日期解析为字符串
 * @param date
 * @param needTime
 * @param split
 * @param needSecond
 */
export declare function dateParse(date: Date, needTime?: boolean, split?: string, needSecond?: boolean): string;
/**
 * 创建年月日时分秒
 * @param val
 * @param isDateTime
 * @param needSecond
 * @param split
 */
export declare function createDatetime(val: any, isDateTime?: boolean, needSecond?: boolean, split?: string): any;
export declare function parseDateByType(val: any, type: string, subType?: string, needSecond?: boolean, split?: string): any;
/**
 * 获取 el-date-picker 的默认 value-format（dayjs 格式）
 * value-format 决定了 v-model 绑定值的字符串格式
 */
export declare function getDateValueFormat(subType: string): string;
/**
 * 获取 el-date-picker 的默认显示 format（dayjs 格式）
 * format 决定了输入框中显示的文本格式
 */
export declare function getDateDisplayFormat(subType: string): string;
/**
 * 规范化日期/时间模型值，确保 el-date-picker / el-time-picker 能正确显示
 *
 * 处理场景：
 * - ISO 字符串 "2026-06-09T16:00:00.000Z"
 * - 已格式化字符串 "2026-06-09"、"2026/06/09"
 * - 纯月份数字 "06"
 * - 纯时间字符串 "17:24:43"
 * - Date 对象
 * - 范围数组 ["2026-06-09T16:00:00.000Z", "2026-07-08T16:00:00.000Z"]
 * - JSON 字符串数组 '[ "06", "11" ]'
 *
 * @param val     原始值
 * @param subType 日期子类型（year/month/date/datetime/daterange 等）
 * @param valueFormat 目标 value-format（不传则根据 subType 自动推断）
 */
export declare function normalizeDateModel(val: any, subType: string, valueFormat?: string): any;