js 验证路径是否存在

const fs = require('fs');

function checkPathExists(path) {
  return new Promise((resolve, reject) => {
    fs.access(path, fs.constants.F_OK, (err) => {
      if (err) {
        resolve(false); // 路径不存在
      } else {
        resolve(true); // 路径存在
      }
    });
  });
}

// 使用示例
checkPathExists('/path/to/check')
  .then(exists => {
    console.log(`Path exists: ${exists}`);
  })
  .catch(err => {
    console.error('Error checking path:', err);
  });

const path = require('path');
const correctPath = path.resolve('/base/path', 'relative/path');

async function checkPathExistsAsync(path) {
  try {
    await fs.promises.access(path, fs.constants.F_OK);
    return true;
  } catch (err) {
    return false;
  }
}

// 使用示例
checkPathExistsAsync('/path/to/check')
  .then(exists => console.log(`Path exists: ${exists}`))
  .catch(err => console.error('Error checking path:', err));