fix lag with dart lsp

lua/plugins/flutter.lua

@@ -40,6 +40,9 @@ return {
 				},
 				lsp = {
 					capabilities = require("cmp_nvim_lsp").default_capabilities(),
+					on_attach = function(client, bufnr)
+						client.server_capabilities.semanticTokensProvider = nil
+					end,
 					settings = {
 						showTodos = true,
 						completeFunctionCalls = true,

lua/plugins/lsp.lua

@@ -107,7 +107,16 @@ return {
 				},
 				mapping = cmp.mapping.preset.insert({
 					["<C-Space>"] = cmp.mapping.complete(),
-					["<CR>"] = cmp.mapping.confirm({ select = true }),
+					["<CR>"] = cmp.mapping({
+						i = function(fallback)
+							if cmp.visible() and cmp.get_active_entry() then
+								cmp.confirm({ behavior = cmp.ConfirmBehavior.Replace, select = false })
+							else
+								fallback()
+							end
+							fallback()
+						end,
+					}),
 					["<Tab>"] = cmp.mapping(function(fallback)
 						if cmp.visible() then
 							cmp.confirm({ select = true })
@@ -117,10 +126,18 @@ return {
 					end, { "i", "s" }),
 				}),
 				sources = cmp.config.sources({
-					{ name = "nvim_lsp" },
-					{ name = "luasnip" },
-				}, {
-					{ name = "buffer" },
+					{ name = "nvim_lsp", keyword_length = 1 },
+					{ name = "luasnip",  keyword_length = 1 },
+					{
+						name = "buffer",
+						keyword_length = 2,
+						-- Limit indexing to only the active visible buffer to stop lag on Enter
+						option = {
+							get_bufnrs = function()
+								return { vim.api.nvim_get_current_buf() }
+							end
+						}
+					}, -- Triggers after typing 2 characters of a local word
 					{ name = "path" },
 				}),
 			})

lua/plugins/oneliners.lua

@@ -14,7 +14,21 @@ return {
 	{
 		'windwp/nvim-autopairs',
 		event = "InsertEnter",
-		config = true
+		config = function()
+			local autopairs = require("nvim-autopairs")
+			autopairs.setup({
+				check_ts = true,
+				ts_config = {
+					lua = { "string" },
+					dart = { "string_literal" }
+				}
+			})
+			local cmp_autopairs = require("nvim-autopairs.completion.cmp")
+			local pcall_cmp, cmp = pcall(require, "cmp")
+			if pcall_cmp then
+				cmp.event:on("confirm_done", cmp_autopairs.on_confirm_done())
+			end
+		end
 	},
 
 }

lua/plugins/treesitter.lua

@@ -13,6 +13,13 @@ return {
 		ts.setup({
 			install_dir = vim.fn.stdpath("data") .. "/site",
 			auto_install = true,
+			highlight = {
+				enable = true,
+			},
+			indent = {
+				enable = true,
+				disable = { "dart" },
+			},
 		})
 		-- 2. Bulk Install Parsers (Asynchronous)
 		ts.install(supported_languages)