...

src/lsp/server.zig

@@ -164,7 +164,7 @@ pub const Server = struct {
         const doc = self.documents.get(file_path) orelse {
             return try self.sendResponse(id_json, "null");
         };
-        const sema = doc.sema orelse {
+        const sema = doc.sema orelse doc.last_good_sema orelse {
             return try self.sendResponse(id_json, "null");
         };
 
@@ -420,7 +420,9 @@ pub const Server = struct {
         }
 
         // Regular completion: all in-scope symbols + keywords
-        const sema = doc.sema orelse {
+        // Fall back to last successful analysis when current parse/analysis fails
+        // (common while user is mid-typing)
+        const sema = doc.sema orelse doc.last_good_sema orelse {
             return try self.sendResponse(id_json, "[]");
         };
 
@@ -490,7 +492,7 @@ pub const Server = struct {
         var items = std.ArrayList(lsp.CompletionItem).empty;
 
         if (extractDotPrefix(doc.source, cursor_offset)) |prefix| {
-            if (doc.sema) |sema| {
+            if (doc.sema orelse doc.last_good_sema) |sema| {
                 // Check if prefix is a namespace — offer imported doc's declarations
                 if (self.findImportByNs(doc, prefix)) |imp| {
                     if (self.documents.get(imp.path)) |imp_doc| {