scope-capture VS debug-repl

Awesome tools.

Personally I can't imagine coding in clojure without scope capture

https://github.com/vvvvalvalval/scope-capture

I haven't tried it myself. I generally just use truss for runtime constraint checking. I use a modified version that integrates scope-capture. And malli validation for more complex cases, but I try to limit that. For me it is better to validate individual attributes as needed, vs validating an entire "type"/collection of attributes. So each function only cares about the attributes that it needs, and validates only as needed.

Use scope-capture to observe the actual data flowing through the system

Scope capture library https://github.com/vvvvalvalval/scope-capture automates this approach.

Is anyone aware of any prior art along the lines of this? I've seen scope-capture but it's more about instrumenting existing programs than writing new ones interactively.

I am not advocating against the use of a compiler. I am going to illustrate how to reproduce the scope of a program and replay it in the REPL as it is done for instance in Clojure with scope-capture. In some use cases, I find this approach is simpler than using a debugger. This approach is possible only because the data is immutable.

Cursive's debugger doesn't, but as one of the other posters mentioned there's a library called debug-repl which gives you this: https://github.com/gfredericks/debug-repl.

However, as I mentioned in the article, I've found it's usually better to use scope-capture than a debugger that pauses execution. The main reason is that I mainly work with Kafka Streams atm, and when the debugger pauses one thread other threads start timing out and throwing exceptions.

I think gary already did this with debug repl.