feat: diagnostics virtual text and icons

lua/dot/init.lua

@@ -53,3 +53,31 @@ vim.o.completeopt = "menuone,noselect"
 -- Confirm on exit
 vim.o.confirm = true
 
+-- Diagnostics
+vim.diagnostic.config({
+	severity_sort = true,
+	float = { border = "rounded", source = "if_many" },
+	underline = { severity = vim.diagnostic.severity.ERROR },
+	signs = vim.g.have_nerd_font and {
+		text = {
+			[vim.diagnostic.severity.ERROR] = "󰅚 ",
+			[vim.diagnostic.severity.WARN] = "󰀪 ",
+			[vim.diagnostic.severity.INFO] = "󰋽 ",
+			[vim.diagnostic.severity.HINT] = "󰌶 ",
+		},
+	} or {},
+	virtual_text = {
+		source = "if_many",
+		spacing = 2,
+		format = function(diagnostic)
+			local diagnostic_message = {
+				[vim.diagnostic.severity.ERROR] = diagnostic.message,
+				[vim.diagnostic.severity.WARN] = diagnostic.message,
+				[vim.diagnostic.severity.INFO] = diagnostic.message,
+				[vim.diagnostic.severity.HINT] = diagnostic.message,
+			}
+			return diagnostic_message[diagnostic.severity]
+		end,
+	},
+})
+