refactor: snip and completion

lua/plugins/coding.lua

@@ -1,4 +1,73 @@
 return {
+
+    {
+        "L3MON4D3/LuaSnip",
+        build = (not jit.os:find("Windows"))
+        and "echo 'NOTE: jsregexp is optional, so not a big deal if it fails to build'; make install_jsregexp"
+        or nil,
+        dependencies = {
+            "rafamadriz/friendly-snippets",
+            config = function()
+                require("luasnip.loaders.from_vscode").lazy_load()
+            end,
+        },
+        opts = {
+            history = true,
+            delete_check_events = "TextChanged",
+        },
+        -- stylua: ignore
+        keys = {
+            {
+                "<tab>",
+                function()
+                    return require("luasnip").jumpable(1) and "<Plug>luasnip-jump-next" or "<tab>"
+                end,
+                expr = true, silent = true, mode = "i",
+            },
+            { "<tab>", function() require("luasnip").jump(1) end, mode = "s" },
+            { "<s-tab>", function() require("luasnip").jump(-1) end, mode = { "i", "s" } },
+        },
+    },
+
+    {
+        "hrsh7th/nvim-cmp",
+        event = "InsertEnter",
+        dependencies = {
+            "hrsh7th/cmp-nvim-lsp",
+            "hrsh7th/cmp-buffer",
+            "hrsh7th/cmp-path",
+            "saadparwaiz1/cmp_luasnip",
+        },
+        opts = function ()
+            vim.api.nvim_set_hl(0, "CmpGhostText", { link = "Comment", default = true })
+            local cmp = require("cmp")
+            return {
+                completion = {
+                    completeopt = "menu,menuone,noinsert"
+                },
+                snippet = {
+                    expand = function (args)
+                        require("luasnip").lsp_expand(args)
+                    end,
+                },
+                mapping = cmp.mapping.preset.insert({
+                    ["<C-j>"] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Insert }),
+                    ["<C-k>"] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Insert }),
+                    ["<C-Space>"] = cmp.mapping.complete(),
+                    ["<C-e>"] = cmp.mapping.abort(),
+                    ["<CR>"] = cmp.mapping.confirm({ behavior = cmp.SelectBehavior.Replace, select = true}),
+                }),
+                sources = cmp.config.sources({
+                    { name = "path" },
+                    { name = "nvim_lsp" },
+                    { name = "buffer", keyword_length = 5 },
+                    { name = "luasnip", keyword_length = 3 },
+                })
+            }
+        end
+    },
+
+
     {
            "echasnovski/mini.pairs",
         event = "VeryLazy",