feat: use lua-dev instead of custom sumneko config

nvim/lua/plugins.lua

@@ -119,6 +119,9 @@ return require('packer').startup(function(use)
 
             -- highlight current symbol
             "RRethy/vim-illuminate",
+
+            -- lua plugin development
+            "folke/lua-dev.nvim",
         },
         config = function() require('plugins.nvim-lsp-setup') end,
     }

nvim/lua/plugins/nvim-lsp-setup.lua

@@ -1,9 +1,3 @@
-local utils = require("nvim-lsp-setup.utils")
-
-local nvim_runtime_path = vim.split(package.path, ";")
-table.insert(nvim_runtime_path, "lua/?.lua")
-table.insert(nvim_runtime_path, "lua/?/init.lua")
-
 require("nvim-lsp-setup").setup({
     default_mappings = false,
     mappings = {
@@ -23,7 +17,7 @@ require("nvim-lsp-setup").setup({
         ["<C-n>"] = "lua vim.diagnostic.goto_next()",
     },
     on_attach = function(client)
-        utils.format_on_save(client)
+        require("nvim-lsp-setup.utils").format_on_save(client)
         require("illuminate").on_attach(client)
     end,
     servers = {
@@ -48,16 +42,7 @@ require("nvim-lsp-setup").setup({
                 },
             },
         }),
-        sumneko_lua = {
-            settings = {
-                Lua = {
-                    runtime = { version = "LuaJIT", path = nvim_runtime_path },
-                    diagnostics = { globals = { "vim" } },
-                    workspace = { library = vim.api.nvim_get_runtime_file("", true) },
-                    telemetry = { enable = false }
-                }
-            }
-        },
+        sumneko_lua = require('lua-dev').setup({}),
         terraformls = {},
         volar = {},
     },