three/examples/jsm -> three/addons

src/app.js

···
-import WebGL from 'three/examples/jsm/capabilities/WebGL.js';
+import WebGL from 'three/addons/capabilities/WebGL.js';
 import { Viewer } from './viewer.js';
 import { SimpleDropzone } from 'simple-dropzone';
 import { Validator } from './validator.js';

src/viewer.js

···
 	LinearToneMapping,
 	ACESFilmicToneMapping,
 } from 'three';
-import Stats from 'three/examples/jsm/libs/stats.module.js';
-import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
-import { KTX2Loader } from 'three/examples/jsm/loaders/KTX2Loader.js';
-import { DRACOLoader } from 'three/examples/jsm/loaders/DRACOLoader.js';
-import { MeshoptDecoder } from 'three/examples/jsm/libs/meshopt_decoder.module.js';
-import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
-import { EXRLoader } from 'three/examples/jsm/loaders/EXRLoader.js';
-import { RoomEnvironment } from 'three/examples/jsm/environments/RoomEnvironment.js';
+import Stats from 'three/addons/libs/stats.module.js';
+import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
+import { KTX2Loader } from 'three/addons/loaders/KTX2Loader.js';
+import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
+import { MeshoptDecoder } from 'three/addons/libs/meshopt_decoder.module.js';
+import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
+import { EXRLoader } from 'three/addons/loaders/EXRLoader.js';
+import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
 
 import { GUI } from 'dat.gui';