Node js不使用fast-csv库解析csv文件

const fs = require('fs');

function parseCSV(filePath) {
  return new Promise((resolve, reject) => {
    const data = [];
    const stream = fs.createReadStream(filePath, 'utf8');
    let remaining = '';

    stream.on('data', (chunk) => {
      remaining += chunk;
      let index = remaining.indexOf('\n');
      while (index > -1) {
        const line = remaining.substring(0, index);
        remaining = remaining.substring(index + 1);
        data.push(line.split(','));
        index = remaining.indexOf('\n');
      }
    });

    stream.on('end', () => {
      if (remaining.length > 0) {
        data.push(remaining.split(','));
      }
      resolve(data);
    });

    stream.on('error', (error) => {
      reject(error);
    });
  });
}

// 使用示例
parseCSV('path/to/file.csv')
  .then((data) => {
    console.log(data);
  })
  .catch((error) => {
    console.error(error);
  });