The article details the architecture of domharvest-playwright, a web scraping tool designed for production environments. The core architecture is built around three main components: the DOMHarvester class as the main orchestrator, browser management for Playwright lifecycle handling, and a data extraction pipeline for selector-based harvesting. Key design principles include simplicity first, fail-fast error handling, and composability with small, focused methods.

The tool implements explicit browser lifecycle management through init() and close() methods, ensuring proper resource cleanup. The harvesting pipeline uses a straightforward flow: page navigation with 'networkidle' wait state, sequential element processing to prevent race conditions, and guaranteed cleanup via finally blocks. Error handling wraps Playwright errors with context-specific messages for better debugging.

Custom extraction support allows arbitrary page evaluation for complex scenarios. The architecture prioritizes reliability over micro-optimizations, with explicit initialization preventing confusing bugs and clean shutdown preventing memory leaks. Future improvements include plugin systems, retry logic, and streaming results.