create-next-flask/dist/templates/default/frontend/node_modules/dayjs/plugin/weekday.d.ts

Create a Next + Flask app

import { PluginFunc } from 'dayjs'

declare const plugin: PluginFunc
export = plugin

declare module 'dayjs' {
  interface Dayjs {
    weekday(): number

    weekday(value: number): Dayjs
  }
}