skerrick VS truss

Hey man, I was working on a NodeJS REPL as well https://github.com/anonimitoraf/skerrick but am struggling to deal with imports/exports. Does your REPL solution allow imports/exports?

I have looked at swank-js, indium, and skerrick, but none works out of the box (1~2 hours of investment didn't result in anything). Are there people getting this workflow working in Emacs?

When type checking is needed, I find the Truss library* does the trick quite well.

As for the syntax, there is very little, which can make it a harder lift but once you have the hang of it you won't deal with the issues identified in the parent comment.

* https://github.com/taoensso/truss

I use truss extensively throughout my code to prevent those types of errors.

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 assertions for all data requirements inside functions - I use a modified version of https://github.com/ptaoussanis/truss to ensure that I never get NullReference exceptions, and this also helps make functions more self-documenting. Also use this to assert return data.