nodePackages.tsun: add typescript to NODE_PATH

This package has typescript as dependency, but it is specified as peer
dependency which is not reflected via the nodePackages generation script
which is using node2nix which is requiring `--include-peer-dependencies`
to include such dependencies.

In order to be able to run this package stand alone, it needs to add the
typescript module to the NODE_PATH.

Fix #88046

pkgs/development/node-packages/default.nix

@@ -131,6 +131,14 @@ let
       '';
     };
 
+    tsun = super.tsun.overrideAttrs (oldAttrs: {
+      buildInputs = oldAttrs.buildInputs ++ [ pkgs.makeWrapper ];
+      postInstall = ''
+        wrapProgram "$out/bin/tsun" \
+        --prefix NODE_PATH : ${self.typescript}/lib/node_modules
+      '';
+    });
+
     stf = super.stf.override {
       meta.broken = since "10";
     };