The fs module provides APIs for interacting with the file system. Here's how to use it effectively.
Import Methods
Loading code block...
Reading Files
Loading code block...
Writing Files
Loading code block...
Directory Operations
Loading code block...
File Information
Loading code block...
Copy, Move, Rename
Loading code block...
Streams
Loading code block...
Watching Files
Loading code block...
Symbolic Links
Loading code block...
Temporary Files
Loading code block...
File Handles
Loading code block...
Recursive Operations
Loading code block...
Permissions
Loading code block...
Best Practices
API Choice:
✓ Use promises API (fs/promises)
✓ Use streams for large files
✓ Avoid sync methods in servers
✓ Use file handles for complex ops
Error Handling:
✓ Check error.code (ENOENT, etc.)
✓ Handle EACCES (permission denied)
✓ Use try/finally for cleanup
✓ Validate paths before operations
Performance:
✓ Stream large files
✓ Use recursive: true for dirs
✓ Batch operations when possible
✓ Close handles properly
Security:
✓ Validate user input paths
✓ Use path.join for paths
✓ Set appropriate permissions
✓ Avoid path traversal attacks
Conclusion
The fs module provides comprehensive file system operations. Use the promises API for modern async code, streams for large files, and file handles for precise control. Always handle errors appropriately and clean up resources. For security, validate paths and set proper permissions.