dayjs week plugin (fr, en-gb)

const dayjs = require("dayjs") require('dayjs/locale/fr') require('dayjs/locale/en-gb') const weekOfYear = require('dayjs/plugin/weekOfYear') dayjs.extend(weekOfYear) console.log(dayjs('2020-12-31').locale('fr').week()) console.log(dayjs('2020-12-31').locale('en-gb').week())