diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
     "test": "test"
   },
   "dependencies": {
+    "@types/debug": "^4.1.7",
     "@webcomponents/shadycss": "^1.3.1",
     "@webcomponents/webcomponentsjs": "^1.2.0",
     "bower": "^1.8.4",
@@ -18,14 +19,15 @@
     "coffeelint": "^2.1.0",
     "coffeescript": "^2.3.0",
     "d3": "^5.1.0",
+    "debug": "^4.3.4",
     "esmify": "^2.1.1",
-    "lit-element": "^2.1.0",
-    "lit-html": "^1.1.0",
+    "lit": "^2.2.2",
     "mocha": "^2.5.3",
     "n3": "^1.0.0-alpha",
     "pixi.js": "^4.7.3",
     "significant-rounding": "^2.0.0",
-    "tinycolor2": "^1.4.1"
+    "tinycolor2": "^1.4.1",
+    "vite": "^2.9.1"
   },
   "devDependencies": {
     "mocha": "^2.5.3"