neovim-config/luasnippets/all.lua

local ls = require("luasnip")
-- some shorthands...
local snip = ls.snippet
local node = ls.snippet_node
local text = ls.text_node
local insert = ls.insert_node
local func = ls.function_node
local choice = ls.choice_node
local dynamicn = ls.dynamic_node

local date = function()
	return { os.date("%Y-%m-%d") }
end

ls.add_snippets(nil, {
	all = {
		snip({
			trig = "date",
			namr = "Date",
			dscr = "Date in the form of YYYY-MM-DD",
		}, {
			func(date, {}),
		}),
	},
})