Provides a collection of generic Perl utility functions (trim, ltrim, rtrim, replace, array_flatten, string_contains, etc.) that are self-contained and can be reused in any Perl project for string manipulation, array operations, and data formatting. These functions are isolated from Webmin-specific dependencies and demonstrate clean, reusable code.

Implements a security layer for file operations with path validation functions (fm_path_is_allowed, fm_checked_cwd_path, fm_normalize_path_name) that prevent directory traversal and enforce access controls. Also includes a file-based caching system for search results with TTL (cache_search, cache_search_delete) and server-side pagination for large directories. These patterns can be extracted for any file management system requiring secure path handling and performance optimization.

A JavaScript module for real-time system monitoring using WebSocket connections, uPlot charts, and custom data processing. Features include a toggle limiter to prevent rapid reconnections, retry with exponential backoff, binary search-based data trimming for efficient time-windowing, threshold splitting for area charts, and synchronized zoom/pan across multiple charts. Demonstrates advanced JavaScript patterns for real-time data visualization and state management.

Provides system statistics collection with safe concurrent file access using flock for locking, and state caching to avoid redundant expensive checks. The pattern of using file-based locking and caching is reusable for any data collection script that needs to handle concurrent writes and minimize resource usage. Includes JSON encoding with fallback from JSON::XS to JSON::PP for broader compatibility.