I built Rewind: A zero-dependency TIME-TRAVEL DEBUGGER with live in-browser hot-patching (Open for Contributions)
Debugging modern applications is still surprisingly painful. Whether you're building a Python data pipeline, a Node.js microservice, or a Go API, debugging usually boils down to two tedious options: Littering your codebase with console.log() / print() statements and re-running everything. Stepping forward line-by-line in a traditional debugger, accidentally skipping past the exact mutation that…
Rewind is an innovative, open-source universal time-travel debugger that enables developers to debug any codebase without dependencies. It provides sub-microsecond state diffing and an interactive in-browser hot-patching feature for live code adjustments. Designed with three key principles, Rewind offers universal multi-runtime tracing, enabling Python scripts to auto-trace without changes, or wrap any command, service, or server across languages.
Its sub-microsecond circular state diffing prevents memory bloat and circular reference issues, while the in-browser time scrubber and live hot-patching allow developers to directly edit source code and test fixes in memory. Built on standard library primitives, Rewind requires no external dependencies or daemon setups. To get started, simply clone the repository, install dependencies, and test on a multi-step pipeline bug.
Contributions to enhance Rewind are encouraged, and the project is open-source under the MIT license.
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