Merge pull request #13764 from vector-im/t3chguy/toasts3

Fix EventEmitter typescript signature in node typings

package.json

@@ -89,6 +89,7 @@
     "@babel/register": "^7.7.4",
     "@babel/runtime": "^7.7.6",
     "@types/modernizr": "^3.5.3",
+    "@types/node": "^12.12.41",
     "@types/react": "16.9",
     "@types/react-dom": "^16.9.4",
     "autoprefixer": "^9.7.3",