在React中，如何根据父组件的子组件计算父组件的宽度？

import React, { Component } from 'react';

class ParentComponent extends Component {
  constructor(props) {
    super(props);
    this.childRef = React.createRef();
    this.state = {
      parentWidth: 0
    };
  }

  componentDidMount() {
    const childWidth = this.childRef.current.offsetWidth;
    const parentWidth = // 根据子组件的宽度进行计算父组件的宽度
    this.setState({ parentWidth });
  }

  render() {
    return (
      <div style={{ width: this.state.parentWidth }}>
        <ChildComponent ref={this.childRef} />
      </div>
    );
  }
}

class ChildComponent extends Component {
  render() {
    return <div>子组件内容</div>;
  }
}

export default ParentComponent;