diff --git a/example/package-lock.json b/example/package-lock.json
index 8d69124..44f95cf 100644
--- a/example/package-lock.json
+++ b/example/package-lock.json
@@ -99,6 +99,33 @@
           "requires": {
             "symbol-observable": "1.0.1"
           }
+        },
+        "webpack": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.1.1.tgz",
+          "integrity": "sha512-PwxKH81yLjbPyBSZvPj/Ji9pT99XOGFA0t6zipoOKOMNRZ+09N39J5Uzcx3rYKnsHgKwDnfGkvzac4MF2Taknw==",
+          "dev": true,
+          "requires": {
+            "acorn": "5.5.3",
+            "acorn-dynamic-import": "3.0.0",
+            "ajv": "6.3.0",
+            "ajv-keywords": "3.1.0",
+            "chrome-trace-event": "0.1.2",
+            "enhanced-resolve": "4.0.0",
+            "eslint-scope": "3.7.1",
+            "loader-runner": "2.3.0",
+            "loader-utils": "1.1.0",
+            "memory-fs": "0.4.1",
+            "micromatch": "3.1.9",
+            "mkdirp": "0.5.1",
+            "neo-async": "2.5.0",
+            "node-libs-browser": "2.1.0",
+            "schema-utils": "0.4.5",
+            "tapable": "1.0.0",
+            "uglifyjs-webpack-plugin": "1.2.4",
+            "watchpack": "1.5.0",
+            "webpack-sources": "1.1.0"
+          }
         }
       }
     },
@@ -7824,9 +7851,9 @@
       "dev": true
     },
     "ngx-perfect-scrollbar": {
-      "version": "5.3.5",
-      "resolved": "https://registry.npmjs.org/ngx-perfect-scrollbar/-/ngx-perfect-scrollbar-5.3.5.tgz",
-      "integrity": "sha512-zY9fIOLIzqb2JB9CiJQIbWeoKGKvk0v0sq9nzogwMaeSdOtNJKaFKUnEdWJAQ70YslNHMOyEDyeYNikJYLHOhQ==",
+      "version": "6.0.0-0",
+      "resolved": "https://registry.npmjs.org/ngx-perfect-scrollbar/-/ngx-perfect-scrollbar-6.0.0-0.tgz",
+      "integrity": "sha512-MGhI8WPr4kNt/0p46VIeXA/81cI1hGPHVbl/7rNeMSuZ1yjxaobnre0gSYxSmOqS7QeshMnRVL72y2ZwCw2DDQ==",
       "requires": {
         "perfect-scrollbar": "1.3.0",
         "resize-observer-polyfill": "1.5.0"
@@ -12485,9 +12512,9 @@
       }
     },
     "webpack": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.1.1.tgz",
-      "integrity": "sha512-PwxKH81yLjbPyBSZvPj/Ji9pT99XOGFA0t6zipoOKOMNRZ+09N39J5Uzcx3rYKnsHgKwDnfGkvzac4MF2Taknw==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.2.0.tgz",
+      "integrity": "sha512-O/KmJ2MYoSfsZzq3//RyyYICYTb1gPAuYSIoD4XbxWFqkDrZCkF8BIAwPuFjA8SFqTcsIL3gTS7hiTZaUN2Tjw==",
       "dev": true,
       "requires": {
         "acorn": "5.5.3",