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import moment from 'moment'import MockDate from 'mockdate'import dayjs from '../../src'import weekYear from '../../src/plugin/weekYear'import weekOfYear from '../../src/plugin/weekOfYear'import '../../src/locale/en-gb'
dayjs.extend(weekYear)dayjs.extend(weekOfYear)
beforeEach(() => {  MockDate.set(new Date())})
afterEach(() => {  MockDate.reset()})
it('Week Year', () => {  const daySet = [    ['2018-12-01', 2018],    ['2018-12-30', 2019],    ['2018-12-31', 2019],    ['2019-01-01', 2019]  ]  daySet.forEach((d) => {    const [day, result] = d    const dResult = dayjs(day).weekYear()    expect(dResult).toBe(result)    expect(dResult).toBe(moment(day).weekYear())  })})
it('yearStart: 4', () => {  const daySet = [    ['2020-12-31', 2020],    ['2021-01-01', 2020],    ['2021-01-02', 2020],    ['2021-01-03', 2020],    ['2021-01-04', 2021],    ['2021-01-05', 2021]  ]  daySet.forEach((d) => {    const [day, result] = d    const dResult = dayjs(day).locale('en-gb').weekYear()    expect(dResult).toBe(result)    expect(dResult).toBe(moment(day).locale('en-gb').weekYear())  })})