如何在react-day-picker的DayPickerInput组件中自动添加分隔符

import React from 'react';
import { DayPickerInput } from 'react-day-picker';

class MyDatePicker extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      selectedDate: null
    };
  }

  handleInputChange = (event) => {
    const input = event.target;
    const value = input.value;

    // 在这里添加分隔符
    const formattedValue = value.replace(/(\d{4})(\d{2})(\d{2})/, '$1-$2-$3');

    this.setState({
      selectedDate: formattedValue
    });
  }

  render() {
    return (
      <DayPickerInput
        value={this.state.selectedDate}
        onDayChange={this.handleInputChange}
      />
    );
  }
}

export default MyDatePicker;