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import MockDate from 'mockdate'import dayjs from '../../src'import isMoment from '../../src/plugin/isMoment'
dayjs.extend(isMoment)
beforeEach(() => {  MockDate.set(new Date())})
afterEach(() => {  MockDate.reset()})
it('IsLeapYear', () => {  expect(dayjs.isMoment(dayjs())).toBe(true)  expect(dayjs.isMoment(new Date())).toBe(false)})