node.js实现歌词滚动

以下是使用Node.js实现歌词滚动的示例代码：

const readline = require('readline');
const fs = require('fs');

// 读取歌词文件
const readLyricFile = (filePath) => {
  return new Promise((resolve, reject) => {
    const readInterface = readline.createInterface({
      input: fs.createReadStream(filePath),
      output: process.stdout,
      console: false
    });
    const lyricArr = [];
    readInterface.on('line', (line) => {
      lyricArr.push(line);
    });
    readInterface.on('close', () => {
      resolve(lyricArr);
    });
  });
};

// 滚动歌词
const scrollLyric = async (filePath) => {
  const lyricArr = await readLyricFile(filePath);
  let index = 0;
  const intervalId = setInterval(() => {
    if (index === lyricArr.length) {
      clearInterval(intervalId);
      return;
    }
    console.log(lyricArr[index]);
    index++;
  }, 1000);
};

// 示例：滚动歌词文件 example.lrc
scrollLyric('example.lrc');

该示例代码使用了Node.js内置的readline和fs模块，通过readline逐行读取歌词文件，然后使用setInterval函数每隔一秒输出一行歌词，实现了歌词滚动的效果。