import type { Dayjs, OpUnitType, QUnitType } from "dayjs";
import type { XyDatePickerMode, XyDateValue, XyYearQuarterMonthGranularity } from "./types";
/** v-model / valueFormat 默认格式（周以周起始日的日期串存储）。 */
export declare const DATE_PICKER_FORMATS: Record<XyDatePickerMode, string>;
/** 输入框展示默认格式；未单独指定时周显示为「年-周序」。 */
export declare const DATE_PICKER_DISPLAY_FORMATS: Record<XyDatePickerMode, string>;
export declare function detectYearQuarterMonthGranularity(value: string): XyYearQuarterMonthGranularity | null;
export declare function parseYearQuarterMonthValue(value: string | null | undefined): Dayjs | null;
export declare function formatYearQuarterMonthValue(date: Dayjs, granularity: XyYearQuarterMonthGranularity): string;
export declare function getDatePickerFormat(picker: XyDatePickerMode, format?: string, kind?: "display" | "value"): string;
/**
 * 按当前 dayjs locale 的 firstDayOfWeek 排列星期标题。
 * weekdaysMin 始终以周日开头，需按 firstDayOfWeek 旋转。
 */
export declare function getWeekdayLabels(): string[];
export declare function rotateWeekdayLabels(labels: readonly string[], weekStart: number): string[];
export declare function startOfLocaleWeek(date: Dayjs, weekStart: number): Dayjs;
export declare function getQuarterLabel(date: Dayjs): string;
export declare function getMonthRows(viewDate: Dayjs): {
    label: string;
    quarter: number;
    months: Dayjs[];
}[];
export declare function parseDateValue(value: XyDateValue | null | undefined): Dayjs | null;
export declare function parseFormattedDateValue(value: string | null | undefined, format: string): Dayjs | null;
export declare function normalizeDateForPicker(date: Dayjs, picker: XyDatePickerMode): Dayjs;
export declare function getPickerUnit(picker: XyDatePickerMode): OpUnitType | QUnitType;
export declare function isSamePickerValue(left: Dayjs, right: Dayjs | null, picker: XyDatePickerMode): boolean;
export declare function isDateOutsideBounds(date: Dayjs, picker: XyDatePickerMode, minDate?: XyDateValue, maxDate?: XyDateValue): boolean;
export declare function clampDateToBounds(date: Dayjs, minDate?: XyDateValue, maxDate?: XyDateValue): Dayjs;