Function readFileHeadBytes

packages/parser/src/utils.ts:18–24

(filePath: string, size: number)

 * 读取文件头部指定字节数
 */
export function readFileHeadBytes(filePath: string, size: number): string {
  const fd = fs.openSync(filePath, 'r')
  const buffer = Buffer.alloc(size)
  const bytesRead = fs.readSync(fd, buffer, 0, size, 0)
  fs.closeSync(fd)
  return buffer.slice(0, bytesRead).toString('utf-8')
}

/**
 * 创建进度对象