debug
A modern debugger for Ruby (MRI) 2.7+ with remote debugging, VSCode/Chrome integration, and performance optimizations.
What is debug?
debug.rb is the official debugging library for Ruby (MRI) 2.7 and later, replacing the older standard library debugger. It provides a fast, feature-rich debugging environment with support for remote debugging, integration with tools like VSCode and Chrome DevTools, and modern capabilities like recording/replay.
Ruby developers who need a powerful, modern debugger for applications running locally, in containers, or as daemons, especially those transitioning from byebug or the legacy debug.rb.
Developers choose debug.rb for its performance (no overhead when not debugging), native remote debugging support, and seamless integration with popular IDEs and browsers, making it a versatile tool for both local and complex deployment scenarios.
Overview
Debugging functionality for Ruby
Use Cases
Best For
- Debugging Ruby applications running in Docker containers without a TTY
- Remote debugging of daemonized Ruby processes
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