Add extension content

Author: hugetim

lib/index.js

@@ -1,3 +1,6 @@
+
+import './stata'
+
 module.exports = [
   {
     id: 'jupyterlab_stata_highlight2',
@@ -7,6 +10,16 @@ module.exports = [
         'JupyterLab extension jupyterlab_stata_highlight2 is activated!'
       );
       console.log(app.commands);
+      registerStataFileType(app);
     }
   }
 ];
+
+function registerStataFileType(app) {
+  app.docRegistry.addFileType({
+    name: 'stata',
+    displayName: 'Stata',
+    extensions: ['do', 'ado'],
+    mimeTypes: ['text/x-stata'],
+  });
+}