node-formidable/formidable

Features

• Multipart Form Parsing - Provides a streaming parser for extracting files and text fields from multipart/form-data requests.
• Cloud File Uploaders - Provides utilities for streaming uploaded files directly to remote cloud storage like AWS S3, Azure, or GCP.
• Cloud Storage Integrations - Streams incoming file data directly to remote cloud platforms to avoid local disk storage.
• Filename Sanitizers - Sanitizes incoming file metadata and restricts write paths to prevent directory traversal attacks.
• Resource Constraints - Enforces maximum file counts and size limits during streaming to prevent server resource exhaustion.
• Server-Side Upload Constraints - Enforces server-side limits on upload sizes and file counts to protect against resource abuse.
• Server-Side Volume Restrictions - Enforces maximum file counts and size limits during the stream process to prevent server memory or disk exhaustion.
• File Upload Handlers - Provides a server-side utility for managing file size limits, filename sanitization, and upload progress tracking.
• Streamed Parsing - Processes incoming request bodies as a continuous stream to handle large uploads without memory exhaustion.
• URL Data Parsing - Converts standard URL-encoded query strings from non-multipart form submissions into structured data objects.
• Upload Progress Tracking - Emits events after each parsed chunk to monitor upload bytes and completion status in real-time.
• Writable Stream Integration - Redirects file data to custom writable streams for direct uploads to cloud providers or disks.
• Cloud Storage Upload Bridges - Provides a bridge to pipe multipart request streams directly to AWS S3, Azure, or GCP buckets.
• Custom File Storage Logic - Defines how uploaded files are named, where they are stored, and how they are written to disk.
• Real-time Stream Uploads - Redirects uploaded file data to a writable stream for direct, real-time cloud or private storage uploads.
• Incoming File Filters - Intercepts and filters specific fields or files from a multipart stream based on custom business logic.
• Upload File Filtering - Evaluates incoming files against custom predicate functions to selectively accept or reject specific uploads.
• Incoming Request Field Filters - Provides custom logic to filter specific fields or files during the multipart parsing process.
• Stream Interception - Allows overriding default part handlers to manually process and validate specific segments of a multipart stream.

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