import dayjs, { type Dayjs } from "dayjs"; import type { GGanttChartConfig } from "../components/GGanttChart.vue"; import type { GanttBarObject } from "../types"; export declare const DEFAULT_DATE_FORMAT = "YYYY-MM-DD HH:mm"; export default function useDayjsHelper(config?: GGanttChartConfig): { chartStartDayjs: import("vue").ComputedRef; chartEndDayjs: import("vue").ComputedRef; toDayjs: (input: string | Date | GanttBarObject, startOrEnd?: "start" | "end") => dayjs.Dayjs; format: (input: string | Date | Dayjs, pattern?: string | false) => string | Date; };