volar and diangnostic severity level check

lua/navigator/diagnostics.lua

@@ -226,14 +226,16 @@ local diag_hdlr = function(err, result, ctx, config)
       item.uri = uri
       -- trace(item)
       local head = _NgConfigValues.icons.diagnostic_head
-      if v.severity == 1 then
+      if v.severity then
-        head = _NgConfigValues.icons.diagnostic_head_severity_1
+        if v.severity == 1 then
-      end
+          head = _NgConfigValues.icons.diagnostic_head_severity_1
-      if v.severity == 2 then
+        end
-        head = _NgConfigValues.icons.diagnostic_head_severity_2
+        if v.severity == 2 then
-      end
+          head = _NgConfigValues.icons.diagnostic_head_severity_2
-      if v.severity > 2 then
+        end
-        head = _NgConfigValues.icons.diagnostic_head_severity_3
+        if v.severity > 2 then
+          head = _NgConfigValues.icons.diagnostic_head_severity_3
+        end
       end
       if v.relatedInformation and v.relatedInformation[1] then
         local info = v.relatedInformation[1]

lua/navigator/lspclient/servers.lua

@@ -28,6 +28,7 @@ return {
   'nimls',
   'intelephense',
   'vuels',
+  'volar',
   'phpactor',
   'omnisharp',
   'r_language_server',