diff --git a/blast_en.html b/blast_en.html
index 484098c..8e840ce 100644
--- a/blast_en.html
+++ b/blast_en.html
@@ -39,8 +39,7 @@
           "adapted-from-phet"
         ],
         "simulation": true,
-        "readmeCreatedManually": true,
-        "typescript": true
+        "readmeCreatedManually": true
       },
       "eslintConfig": {
         "extends": "../chipper/eslint/sim_eslintrc.js"
@@ -124,7 +123,7 @@
 
   // Module loading in compilation-free (development) mode will be kicked off once strings are loaded.
   // This is done in load-unbuilt-strings.js
-  window.phet.chipper.loadModules = () => loadURL( '../chipper/dist/blast/js/blast-main.js', 'module' );
+  window.phet.chipper.loadModules = () => loadURL( 'js/blast-main.js', 'module' );
 </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/js/blast/model/BlastModel.ts b/js/blast/model/BlastModel.js
similarity index 92%
rename from js/blast/model/BlastModel.ts
rename to js/blast/model/BlastModel.js
index be81563..83f664c 100644
--- a/js/blast/model/BlastModel.ts
+++ b/js/blast/model/BlastModel.js
@@ -8,9 +8,6 @@
 import blast from '../../blast.js';
 import Particle from './Particle.js';
 
-const x: number = 'hello';
-console.log( x );
-
 class BlastModel {
 
   /**
diff --git a/package.json b/package.json
index cc4d186..017c04a 100644
--- a/package.json
+++ b/package.json
@@ -17,8 +17,7 @@
       "adapted-from-phet"
     ],
     "simulation": true,
-    "readmeCreatedManually": true,
-    "typescript": true
+    "readmeCreatedManually": true
   },
   "eslintConfig": {
     "extends": "../chipper/eslint/sim_eslintrc.js"