diff --git a/demo-vue/package-lock.json b/demo-vue/package-lock.json
index b538411..c1e668e 100644
--- a/demo-vue/package-lock.json
+++ b/demo-vue/package-lock.json
@@ -1017,9 +1017,9 @@
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+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "dev": true,
+      "optional": true,
+      "requires": {
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+      }
+    },
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       "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
@@ -1795,9 +1805,9 @@
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-      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.3.tgz",
-      "integrity": "sha512-i70fVHhmV3DtTl6nqvZOnIjbY0Pe4kAUjwHj8z0zAdgBtYrJyYwLKCCuRBQ5ppkyL0AkN7HKRnETdmdp1zqNXw==",
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+      "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==",
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@@ -2673,9 +2683,9 @@
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-      "resolved": "https://registry.npmjs.org/events/-/events-3.0.0.tgz",
-      "integrity": "sha512-Dc381HFWJzEOhQ+d8pkNon++bk9h6cdAoAj4iE6Q4y6xgTzySWXlKn05/TVNpjnfRqi/X0EpJEJohPjNI3zpVA==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/events/-/events-3.1.0.tgz",
+      "integrity": "sha512-Rv+u8MLHNOdMjTAFeT3nCjHn2aGlx435FP/sDHNaRhDEMwyI/aB22Kj2qIN8R0cw3z28psEQLYwxVKLsKrMgWg==",
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@@ -2947,6 +2957,13 @@
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       "dev": true
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+    "file-uri-to-path": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
+      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==",
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+      "optional": true
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@@ -3144,14 +3161,15 @@
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-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.9.tgz",
-      "integrity": "sha512-oeyj2H3EjjonWcFjD5NvZNE9Rqe4UW+nQBU2HNeKw0koVLEFIhtyETyAakeAM3de7Z/SW5kcA+fZUait9EApnw==",
+      "version": "1.2.11",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.2.11.tgz",
+      "integrity": "sha512-+ux3lx6peh0BpvY0JebGyZoiR4D+oYzdPZMKJwkZ+sFkNJzpL7tXc/wehS49gUAxg3tmMHPHZkA8JU2rhhgDHw==",
       "dev": true,
       "optional": true,
       "requires": {
+        "bindings": "^1.5.0",
         "nan": "^2.12.1",
-        "node-pre-gyp": "^0.12.0"
+        "node-pre-gyp": "*"
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@@ -3163,7 +3181,8 @@
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           "version": "2.1.1",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3184,19 +3203,21 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
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           }
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-          "version": "1.1.1",
+          "version": "1.1.3",
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@@ -3204,17 +3225,20 @@
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           "version": "1.1.0",
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+          "dev": true,
+          "optional": true
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3223,7 +3247,7 @@
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-          "version": "4.1.1",
+          "version": "3.2.6",
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@@ -3250,12 +3274,12 @@
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-          "version": "1.2.5",
+          "version": "1.2.7",
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           "dev": true,
           "optional": true,
           "requires": {
-            "minipass": "^2.2.1"
+            "minipass": "^2.6.0"
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@@ -3281,7 +3305,7 @@
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-          "version": "7.1.3",
+          "version": "7.1.6",
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@@ -3310,7 +3334,7 @@
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-          "version": "3.0.1",
+          "version": "3.0.3",
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@@ -3329,9 +3353,10 @@
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         "inherits": {
-          "version": "2.0.3",
+          "version": "2.0.4",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3343,6 +3368,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -3357,6 +3383,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -3364,53 +3391,56 @@
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           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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-          "version": "2.3.5",
+          "version": "2.9.0",
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             "yallist": "^3.0.0"
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         "minizlib": {
-          "version": "1.2.1",
+          "version": "1.3.3",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "minipass": "^2.2.1"
+            "minipass": "^2.9.0"
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         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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-          "version": "2.1.1",
+          "version": "2.1.2",
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-          "version": "2.3.0",
+          "version": "2.4.0",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "debug": "^4.1.0",
+            "debug": "^3.2.6",
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             "sax": "^1.2.4"
           }
         },
         "node-pre-gyp": {
-          "version": "0.12.0",
+          "version": "0.14.0",
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@@ -3424,7 +3454,7 @@
             "rc": "^1.2.7",
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             "semver": "^5.3.0",
-            "tar": "^4"
+            "tar": "^4.4.2"
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@@ -3438,13 +3468,22 @@
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-          "version": "1.0.6",
+          "version": "1.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "npm-normalize-package-bin": "^1.0.1"
+          }
+        },
+        "npm-normalize-package-bin": {
+          "version": "1.0.1",
           "bundled": true,
           "dev": true,
           "optional": true
         },
         "npm-packlist": {
-          "version": "1.4.1",
+          "version": "1.4.7",
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@@ -3468,7 +3507,8 @@
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           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -3480,6 +3520,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -3513,7 +3554,7 @@
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         "process-nextick-args": {
-          "version": "2.0.0",
+          "version": "2.0.1",
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@@ -3554,7 +3595,7 @@
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-          "version": "2.6.3",
+          "version": "2.7.1",
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@@ -3565,7 +3606,8 @@
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@@ -3580,7 +3622,7 @@
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+          "version": "5.7.1",
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@@ -3601,6 +3643,7 @@
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@@ -3620,6 +3663,7 @@
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@@ -3631,18 +3675,18 @@
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-            "minipass": "^2.3.4",
-            "minizlib": "^1.1.1",
+            "minipass": "^2.8.6",
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@@ -3663,12 +3707,14 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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+          "version": "3.1.1",
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+      "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
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+      "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.3.tgz",
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@@ -4944,9 +4990,9 @@
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+      "version": "1.5.0-next-2020-02-05-100352-01",
+      "resolved": "https://registry.npmjs.org/nativescript-dev-webpack/-/nativescript-dev-webpack-1.5.0-next-2020-02-05-100352-01.tgz",
+      "integrity": "sha512-Al9c98VRLkrNL0Qqz9v0QZsWuF4cGjtJjrK08uU2U32XlqrME3eCBdF8hZh1b/60iVDVmIc/EAwxinVsWktIUA==",
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@@ -5066,9 +5112,9 @@
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-      "integrity": "sha512-dKy4t2/Lra9u4FRbwWICYAD4rKVCcyH7gViJD/F9NkQoIrGPyE/pr8AJi4TSGAVbVsGe9p4DE7/KipupceviZg==",
+      "version": "0.11.1-next-2020-02-20-102900-01",
+      "resolved": "https://registry.npmjs.org/nativescript-worker-loader/-/nativescript-worker-loader-0.11.1-next-2020-02-20-102900-01.tgz",
+      "integrity": "sha512-5Gc5pxzAcNSh+ltZ7u45rViCqUHYZRs7VfXmN8w+7TqpD4gtqLDcwkl/8XuhvUJuk80MPd+bvBKHMhH7byoNEg==",
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@@ -5567,9 +5613,9 @@
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+      "resolved": "https://registry.npmjs.org/pako/-/pako-1.0.11.tgz",
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@@ -5855,13 +5901,13 @@
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+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.6.tgz",
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       "requires": {
         "forwarded": "~0.1.2",
-        "ipaddr.js": "1.9.0"
+        "ipaddr.js": "1.9.1"
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@@ -6862,12 +6908,12 @@
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+          "version": "0.5.3",
+          "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.3.tgz",
+          "integrity": "sha512-Htz+RnsXWk5+P2slx5Jh3Q66vhQj1Cllm0zvnaY98+NFx+Dv2CF/f5O/t8x+KaNdrdIAsruNzoh/KpialbqAnw==",
           "dev": true,
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-            "atob": "^2.1.1",
+            "atob": "^2.1.2",
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@@ -7002,9 +7048,9 @@
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-      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
+      "version": "1.4.8",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.8.tgz",
+      "integrity": "sha512-9NykojV5Uih4lgo5So5dtw+f0JgJX30KCNI8gwhz2J9A15wD0Ml6tjHKwf6fTSa6fAdVBdZeNOs9eJ71qCk8vA==",
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@@ -7144,9 +7190,9 @@
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