Ariana – A time travel debugger for PY/JS right in VSCode
Hello HN! I've recently released and open-sourced a time travel debugging VSCode extension for Python, Javascript & Typescript. https://github.com/dedale-dev/ariana It's born from the pain of spending hours reproducing bugs, struggling to read parallel streams of logging across client/server, and managing print/console.log statements. You can see a short video here: https://www.youtube.com/watch?v=M2gZv7IOo7s Basically its two parts: One part CLI called `ariana` that you install with npm/pip and run alongside your code's run command. For…
Ariana – A time travel debugger for PY/JS right in VSCode launched on March 6, 2025 with 25 votes, #729 of 7,215 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Ariana is a time travel debugging extension for VSCode that works with Python, JavaScript, and TypeScript. It consists of a CLI tool that runs alongside code execution to instrument and trace program behavior, and a VSCode extension that displays the results. Developers use it to investigate bugs by examining code state at any point during execution, avoiding the need to reproduce issues or manage scattered logging statements.
written from the facts on this page · September 2026
From the sources
Observability and runtime visualization for JS/TS/Python code with zero code change - ariana-dot-dev/ariana-debugger
Ariana is a CLI to automatically add observability to your code and an IDE extension to consume it & provide context-aware debugging capabilities to coding agents. You don't have to change any code in your codebase or specify breakpoints. Currently supports JS/TS & Python. Follow the Getting started instructions in the Ariana extension panel for the most up-to-date guidance. Below is a summary: The Ariana VS Code extension will guide you through installing the ariana CLI if it's not already present on your system. It will detect available package managers (like npm or pip) and provide commands to run directly from the extension. To collect runtime information, run your usual build/execution…from github.com
In the maker’s words, at launch
Hello HN! I've recently released and open-sourced a time travel debugging VSCode extension for Python, Javascript & Typescript. https://github.com/dedale-dev/ariana It's born from the pain of spending hours reproducing bugs, struggling to read parallel streams of logging across client/server…
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