Control priv access via # (#286)

package.json

@@ -10,7 +10,7 @@
   ],
   "resolutions": {
     "babel-core": "^7.0.0-bridge.0",
-    "typescript": "^3.7.5"
+    "typescript": "^3.8.2"
   },
   "scripts": {
     "build": "polkadot-dev-build-ts",
@@ -31,7 +31,7 @@
   "devDependencies": {
     "@babel/core": "^7.8.4",
     "@babel/runtime": "^7.8.4",
-    "@polkadot/dev": "^0.40.18",
+    "@polkadot/dev": "^0.41.3",
     "@polkadot/ts": "^0.2.3",
     "babel-plugin-transform-vue-template": "^0.4.2",
     "empty": "^0.10.1",