Fixed require

preview.html

@@ -56,6 +56,7 @@
                 "babylonjs-materials": "./node_modules/babylonjs-materials/babylonjs.materials.min.js",
                 "babylonjs-procedural-textures": "./node_modules/babylonjs-procedural-textures/babylonjs.proceduralTextures.js",
                 "babylonjs-post-process": "./node_modules/babylonjs-post-process/babylonjs.postProcess.js",
+                "babylonjs-loaders": "./node_modules/babylonjs-loaders/babylonjs.loaders.js",
                 "cannon": "./node_modules/cannon/build/cannon.min.js",
                 "spectorjs": "./node_modules/spectorjs/dist/spector.bundle.js",
                 "earcut": "./node_modules/earcut/dist/earcut.min.js",
@@ -197,6 +198,8 @@
             return System.import("babylonjs-materials");
         }).then(function () {
             return System.import("babylonjs-post-process");
+        }).then(function () {
+            return System.import("babylonjs-loaders");
         }).then(function () {
             return System.import('./build/src/editor/tools/tools.js').then(function (t) {
                 tools = t.default;

src/extensions/tools/require.ts

@@ -1,5 +1,8 @@
 import * as BABYLON from 'babylonjs';
 import * as POSTPROCESS from 'babylonjs-post-process';
+import * as MATERIALS from 'babylonjs-materials';
+import * as LOADERS from 'babylonjs-loaders';
+import * as PROCEDURALTEXTURES from 'babylonjs-procedural-textures';
 import * as GUI from 'babylonjs-gui';
 import * as CANNON from 'cannon';
 import * as EARCUT from 'earcut';
@@ -29,10 +32,13 @@ export const editorRequire = (moduleName: string) => {
     switch (moduleName) {
         // Babylon.js
         case 'babylonjs':
+            return BABYLON;
         case 'babylonjs-procedural-textures':
+            return PROCEDURALTEXTURES;
         case 'babylonjs-loaders':
+            return LOADERS;
         case 'babylonjs-materials':
-            return BABYLON;
+            return MATERIALS;
         case 'babylonjs-post-process':
             return POSTPROCESS;
         case 'babylonjs-gui':