diff --git a/modules/capabilities/helix.nix b/modules/capabilities/helix.nix
index 202ca0c..c00168f 100644
--- a/modules/capabilities/helix.nix
+++ b/modules/capabilities/helix.nix
@@ -13,7 +13,7 @@
     { pkgs, ... }:
     let
       svelteLanguageServer = pkgs.svelte-language-server.overrideAttrs (
-        finalAttrs: _: {
+        finalAttrs: previousAttrs: {
           version = "0.18.3";
 
           src = pkgs.fetchFromGitHub {
@@ -34,6 +34,14 @@
             fetcherVersion = 3;
             hash = "sha256-fY3hrCkr/soJk1gp39/jec8lT2ZJI27xRBCZi006oWA=";
           };
+
+          postInstall = (previousAttrs.postInstall or "") + ''
+            substituteInPlace \
+              "$out/lib/node_modules/svelte-language-server/packages/language-server/node_modules/@vscode/emmet-helper/lib/cjs/emmetHelper.js" \
+              --replace-fail \
+              "'jsx.enabled': syntax === 'jsx'," \
+              "'jsx.enabled': syntax === 'jsx' || syntax === 'html',"
+          '';
         }
       );
     in
@@ -43,6 +51,7 @@
         defaultEditor = true;
         package = inputs.helix.packages.${pkgs.stdenv.hostPlatform.system}.default;
         extraPackages = with pkgs; [
+          vtsls
           svelteLanguageServer
           tailwindcss-language-server
 
@@ -99,6 +108,34 @@
           };
 
           language = [
+            {
+              name = "javascript";
+              language-servers = [
+                "vtsls"
+                "scls"
+              ];
+            }
+            {
+              name = "jsx";
+              language-servers = [
+                "vtsls"
+                "scls"
+              ];
+            }
+            {
+              name = "typescript";
+              language-servers = [
+                "vtsls"
+                "scls"
+              ];
+            }
+            {
+              name = "tsx";
+              language-servers = [
+                "vtsls"
+                "scls"
+              ];
+            }
             {
               name = "svelte";
               formatter = {