no need for optional modules

Author: linev

package.json

@@ -83,11 +83,7 @@
     "@babel/runtime": "^7.14.0",
     "atob": "^2.1.2",
     "btoa": "^1.2.1",
-    "fflate": "^0.4.8",
-    "canvg": "^3.0.6",
-    "html2canvas": "^1.0.0-rc.5",
-    "core-js": "^3.6.0",
-    "dompurify": "^2.2.0"
+    "fflate": "^0.4.8"
   },
   "scripts": {
     "build": "rollup -c build/rollup.config.js",