Does any library of utility/helpers for luasnip exist?

[danielo515]

Luasnip is awesome, impressive, mind-blowing. The best snippet engine I used so far.
But with everything this powerful comes big complexity, and Luanip is quite complex.
Everything that is cool and unique to luansip requires big amounts of code you mostly copy paste without understanding much and from one file to another.
I think it will be cool to have a set of utility functions that make certain complex tasks simpler. Lodash style, not sure if you are familiar.

Regards

[atticus-sullivan]

Hm, I think what comes closest is the stuff in luasnip.extras (at least that I know of).
Some effort also was made in the wiki here on github (but these snippets are pretty specialized).
But having some popular reoccuring building blocks in extras might be a nice thing (maybe also making it easier for new users). Maybe we'll just collect some ideas and decide then if we've found things that really are commonly used (otherwise it doesn't make sense to incorporate them in this repo, just write some sort of function and use it for yourself) and can be integrated in a nice way into this repo.

[danielo515]

Integrating them here will make it easier,but having a separate library will also work fine IMO

[L3MON4D3]

+1 for extras, that's where I'd like to put useful extensions that don't have to be in the core of Luasnip, ie. stuff one might write for their own config. I'm also pretty relaxed on what is in scope there, imo it won't hurt to put in stuff that's well written (so it won't need much maintenance), even if it's only slightly useful

[L3MON4D3]

I also like the idea of a more opinionated luasnip-config repo which makes use of some newer stuff which is not explicitly implemented in here, and provides some more defaults

[L3MON4D3]

What are the big amounts of code you're referring to? Boilerplate for dynamicNode/functionNode?

[danielo515]

for capitalizing functions what about giving them the name they are after? The ones I'm interested are Pascal case, kebab-case, CamelCase and snake_case we may put them all under a case utility ? case.pascal, case.kebab case.camel case.snake ? and make it take a node reference like the repeat node does? or add them as options to the repeat node? rep(1,"pascal"), rep(1,"camel")

Something similar could be added for substring, extend the existing rep node?

[danielo515]

Do you mean that 2 and 4 are already possible using the existing on_leave event, or that such event will be needed to support it?.
What do you think about my previous proposal?

[L3MON4D3]

Oh srry, missed your previous message.
Yes, on_leave already exists, see here. #732 has some more hints, the comment I linked a good implementation.
I like the ideas 👍 Should be possible to adapt the current rep we provide to have this transformation+substring (maybe matching) built-in.
We could also implement this by relying on the transformation-syntax provided by LSP-snippets, which we already implement anyway.

[danielo515]

You linked global events, which I don't think are useful for my use case. Maybe you meant snippet specific events? https://github.com/L3MON4D3/LuaSnip/blob/master/DOC.md#snippet-data:~:text=callbacks%3A%20Contains%20functions%20that%20are%20called%20upon%20entering/leaving%20a%20node%20of%20this%20snippet.

[L3MON4D3]

Oh, yes, that's probably the better link :D
The one I shared mentions the snippet-specific callbacks only tangentially, and there's no example for it 😅