像老式视频游戏一样，打印React组件中的文本字母

import React, { Component } from 'react';

class Typewriter extends Component {
  constructor(props) {
    super(props);
    this.state = {
      text: "",
      currentIndex: 0
    };
  }

  componentDidMount() {
    const { letters } = this.props;
    this.typingInterval = setInterval(() => {
      if (this.state.currentIndex < letters.length) {
        this.setState(prevState => ({
          text: prevState.text + letters[prevState.currentIndex],
          currentIndex: prevState.currentIndex + 1
        }));
      } else {
        clearInterval(this.typingInterval);
      }
    }, 100); // 每100ms打印一个字母
  }

  componentWillUnmount() {
    clearInterval(this.typingInterval);
  }

  render() {
    return <div>{this.state.text}</div>;
  }
}

export default Typewriter;