example given for "opt" incorrect in documentation

[MrMugwump]

I've been attempting to learn luasnips for the past few days, and the example given under Optional Noderef in the documentation, seen below, was not working for me.

ls.snip_expand(s("trig", {
    d(1, function(args)
        if not args[1] then
            -- the arg does not exist -> provide a default.
            return sn(nil, {i(1, "asdf", {key = "ins"})})
        else
            -- This branch is only take after the dynamicNode was updated once.
            -- Now we can perform the actual "task" of this dynamicNode:
            -- replacing all occurences of "a" with "e".
            return sn(nil, {i(1, args[1][1]:gsub("a", "e"), {key = "ins"})})
        end
    end, {opt(k("ins"))})
}))

The error being thrown said I was attempting to call a table.

The culprit was the fact that I had placed the line local opt = require("luasnip.nodes.optional_arg") into my file earlier, which is what the documentation claims opt is set to in all code snippets. I believe it is actually set to local opt = require("luasnip.nodes.optional_arg").new_opt since that fixed the issue (also, deleting the line altogether worked, so clearly there is a disconnect between the documentation and what is actually occurring).

Not sure if this is something to i should place under the issues tab, so apologies if I'm mistaken.

[ameeho67k]

The error you're encountering ("attempting to call a table") likely stems from using opt incorrectly; it's important to note that the documentation is misleading here. You should use local opt = require("luasnip.nodes.optional_arg").new_opt instead of just local opt = require("luasnip.nodes.optional_arg") to properly reference the function needed for creating optional arguments.