|                          |  | import { PluginFunc, ConfigType, QUnitType, OpUnitType } from 'dayjs'
declare const plugin: PluginFuncexport = plugin
declare module 'dayjs' {  interface Dayjs {    quarter(): number
    quarter(quarter: number): Dayjs
    add(value: number, unit: QUnitType): Dayjs
    subtract(value: number, unit: QUnitType): Dayjs
    startOf(unit: QUnitType | OpUnitType): Dayjs
    endOf(unit: QUnitType | OpUnitType): Dayjs
    isSame(date?: ConfigType, unit?: QUnitType): boolean
    isBefore(date?: ConfigType, unit?: QUnitType): boolean
    isAfter(date?: ConfigType, unit?: QUnitType): boolean  }}
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