diff --git a/experiments/rollup.config.cjs b/experiments/rollup.config.cjs
index 050169c..ea17f2b 100644
--- a/experiments/rollup.config.cjs
+++ b/experiments/rollup.config.cjs
@@ -1,36 +1,34 @@
-const copy = require('rollup-plugin-copy');
-const { globSync } = require('glob');
+const copy = require("rollup-plugin-copy");
+const { globSync } = require("glob");
 
 module.exports = {
-  input: globSync('src/js/*.js'),
+  input: globSync("src/js/*.js"),
   output: {
-    dir: 'dist/js',
-    format: 'iife',
+    dir: "dist/js",
+    format: "es",
   },
   plugins: [
     copy({
-      targets: [
-        { src: 'src/**/*.html', dest: 'dist/' },
-      ],
+      targets: [{ src: "src/**/*.html", dest: "dist/" }],
     }),
     // Static dependencies
     copy({
       targets: [
-        { src: '../t3dtools.js/t3dworker.js', dest: 'dist/static' },
-        { src: '../t3dtools.js/t3dworker.wasm', dest: 'dist/static' },
-        { src: '../node_modules/w2ui/w2ui-1.4.3.min.js', dest: 'dist/static' },
-        { src: '../node_modules/w2ui/w2ui-1.4.3.min.css', dest: 'dist/static' },
-        { src: '../node_modules/three/build/three.js', dest: 'dist/static' },
-        { src: '../node_modules/three/examples/js/controls/FlyControls.js', dest: 'dist/static' },
-        { src: '../node_modules/three/examples/js/controls/PointerLockControls.js', dest: 'dist/static' },
-        { src: '../node_modules/three/examples/js/controls/OrbitControls.js', dest: 'dist/static' },
-        { src: '../node_modules/three/examples/js/exporters/OBJExporter.js', dest: 'dist/static' },
-        { src: '../node_modules/three/examples/js/exporters/GLTFExporter.js', dest: 'dist/static' },
-        { src: '../node_modules/jquery/dist/jquery.js', dest: 'dist/static' },
-        { src: '../library/build/T3D.js', dest: 'dist/static' },
-        { src: '../library/build/T3D.js.map', dest: 'dist/static' },
-        { src: '../parser/build/t3d-parser.js', dest: 'dist/static' },
-        { src: '../parser/build/t3d-parser.js.map', dest: 'dist/static' },
+        { src: "../t3dtools.js/t3dworker.js", dest: "dist/static" },
+        { src: "../t3dtools.js/t3dworker.wasm", dest: "dist/static" },
+        { src: "../node_modules/w2ui/w2ui-1.4.3.min.js", dest: "dist/static" },
+        { src: "../node_modules/w2ui/w2ui-1.4.3.min.css", dest: "dist/static" },
+        { src: "../node_modules/three/build/three.js", dest: "dist/static" },
+        { src: "../node_modules/three/examples/js/controls/FlyControls.js", dest: "dist/static" },
+        { src: "../node_modules/three/examples/js/controls/PointerLockControls.js", dest: "dist/static" },
+        { src: "../node_modules/three/examples/js/controls/OrbitControls.js", dest: "dist/static" },
+        { src: "../node_modules/three/examples/js/exporters/OBJExporter.js", dest: "dist/static" },
+        { src: "../node_modules/three/examples/js/exporters/GLTFExporter.js", dest: "dist/static" },
+        { src: "../node_modules/jquery/dist/jquery.js", dest: "dist/static" },
+        { src: "../library/build/T3D.js", dest: "dist/static" },
+        { src: "../library/build/T3D.js.map", dest: "dist/static" },
+        { src: "../parser/build/t3d-parser.js", dest: "dist/static" },
+        { src: "../parser/build/t3d-parser.js.map", dest: "dist/static" },
       ],
     }),
   ],
diff --git a/library/src/LocalReader/LocalReader.ts b/library/src/LocalReader/LocalReader.ts
index fd54738..67b5324 100644
--- a/library/src/LocalReader/LocalReader.ts
+++ b/library/src/LocalReader/LocalReader.ts
@@ -285,6 +285,7 @@ class LocalReader {
           name: map.baseId.toString(),
           category: "Uncategorized",
           baseId: map.baseId,
+          categoryIndex: 99999,
         });
       }
     }
diff --git a/library/tsconfig.json b/library/tsconfig.json
index af445e4..9a94c02 100644
--- a/library/tsconfig.json
+++ b/library/tsconfig.json
@@ -9,6 +9,7 @@
       "esModuleInterop": true,
       "skipLibCheck": true,
       "forceConsistentCasingInFileNames": true,
+      "strictPropertyInitialization": false,
       "sourceMap": true
     },
     "include": [
diff --git a/utils/package.json b/utils/package.json
index 574e336..3c3968b 100644
--- a/utils/package.json
+++ b/utils/package.json
@@ -20,7 +20,8 @@
     "format:check": "prettier --check ./lib && prettier --check ./bin",
     "lint:check": "eslint ./lib && eslint ./bin",
     "lint:fix": "eslint ./lib --fix && eslint ./bin --fix",
-    "test": "exit 0"
+    "test": "exit 0",
+    "build": "exit 0"
   },
   "dependencies": {
     "@types/node": "12.12.17",