t0kio2

import React from 'react';
import { connect } from 'react-redux';

export const withBehavior = Component => connect()(
  class extends React.Component {
    
    func = () => console.log('this is hoc')

    render() {
      return (

t0kio2

const calculateAge = (birthdayStr: string) => {
  if (!birthdayStr) return
  const birthday = new Date(birthdayStr)
  const today = new Date()
  let age = today.getFullYear() - birthday.getFullYear()
  const monthDiff = today.getMonth() - birthday.getMonth()

  // 誕生日が来ていない場合、年齢から1引く
  if (monthDiff < 0 || (monthDiff === 0 && today.getDate() < birthday.getDate())) {
    age--

t0kio2

const getDayOfWeek = (dayNumber) => {
  const dayOfWeek = ['日', '月', '火', '水', '木', '金', '土']
  if (dayNumber < 0 || dayNumber > 6) {
    throw new Error('Invalid day number. Must be between 0 and 6')
  }
  return dayOfWeek[dayNumber]
}