diff --git a/package-lock.json b/package-lock.json
index 099faa0..662c705 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,12 +4,42 @@
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   "requires": true,
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+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
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+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
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+      "dev": true
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+      "resolved": "https://registry.npmjs.org/acorn-dynamic-import/-/acorn-dynamic-import-3.0.0.tgz",
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+      "dev": true,
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@@ -85,10 +115,24 @@
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+      "dev": true,
+      "requires": {
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+        "magic-string": "^0.25.1",
+        "minimist": "^1.2.0",
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+        "regexpu-core": "^4.2.0",
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+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.0.0.tgz",
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@@ -123,6 +167,12 @@
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+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.13.0.tgz",
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@@ -135,6 +185,15 @@
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+      "resolved": "https://registry.npmjs.org/date-time/-/date-time-2.1.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -360,6 +419,23 @@
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+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.0.tgz",
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+      "dev": true,
+      "requires": {
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+          "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.38.tgz",
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@@ -375,6 +451,12 @@
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+      "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+      "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
+      "dev": true
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@@ -390,6 +472,12 @@
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+      "resolved": "https://registry.npmjs.org/locate-character/-/locate-character-2.0.5.tgz",
+      "integrity": "sha512-n2GmejDXtOPBAZdIiEFy5dJ5N38xBCXLNOtw2WpB9kGh6pnrEuKlwYI+Tkpofc4wDtVXHtoAOJaMRlYG/oYaxg==",
+      "dev": true
+    },
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@@ -411,6 +499,15 @@
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+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.25.1.tgz",
+      "integrity": "sha512-sCuTz6pYom8Rlt4ISPFn6wuFodbKMIHUMv4Qko9P17dpxb7s52KJTmRuZZqHdGmLCK9AOcDare039nRIcfdkEg==",
+      "dev": true,
+      "requires": {
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@@ -487,6 +584,12 @@
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+      "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
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@@ -499,6 +602,12 @@
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+      "integrity": "sha1-VjRtR0nXjyNDDKDHE4UK75GqNh0=",
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@@ -506,9 +615,9 @@
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-      "integrity": "sha1-PBrfhx6pzWyUMbbqK9dKD/BVxME=",
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
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@@ -523,6 +632,15 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/pretty-ms/-/pretty-ms-3.2.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -566,6 +684,21 @@
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+      "resolved": "https://registry.npmjs.org/regenerate/-/regenerate-1.4.0.tgz",
+      "integrity": "sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==",
+      "dev": true
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+    "regenerate-unicode-properties": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/regenerate-unicode-properties/-/regenerate-unicode-properties-7.0.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -575,6 +708,20 @@
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+      "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-4.4.0.tgz",
+      "integrity": "sha512-eDDWElbwwI3K0Lo6CqbQbA6FwgtCz4kYTarrri1okfkRLZAqstU+B3voZBCjg8Fl6iq0gXrJG6MvRgLthfvgOA==",
+      "dev": true,
+      "requires": {
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+        "regenerate-unicode-properties": "^7.0.0",
+        "regjsgen": "^0.5.0",
+        "regjsparser": "^0.6.0",
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@@ -594,6 +741,21 @@
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+      "resolved": "https://registry.npmjs.org/regjsparser/-/regjsparser-0.6.0.tgz",
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       "dev": true,
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-        "path-parse": "1.0.5"
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+      "resolved": "http://registry.npmjs.org/rollup/-/rollup-0.57.1.tgz",
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+        "acorn": "^5.5.3",
+        "acorn-dynamic-import": "^3.0.0",
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+        "signal-exit": "^3.0.2",
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+            "micromatch": "^2.3.11"
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+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-9.2.0.tgz",
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+        "magic-string": "^0.25.1",
+        "resolve": "^1.8.1",
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-        "is-module": "1.0.0",
-        "resolve": "1.8.1"
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     "rollup-plugin-svelte": {
@@ -649,6 +876,15 @@
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+      "resolved": "https://registry.npmjs.org/rollup-plugin-uglify/-/rollup-plugin-uglify-3.0.0.tgz",
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@@ -695,6 +931,18 @@
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@@ -731,6 +985,44 @@
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+      "dev": true,
+      "requires": {
+        "commander": "~2.13.0",
+        "source-map": "~0.6.1"
+      }
+    },
+    "unicode-canonical-property-names-ecmascript": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz",
+      "integrity": "sha512-jDrNnXWHd4oHiTZnx/ZG7gtUTVp+gCcTTKr8L0HjlwphROEW3+Him+IpvC+xcJEFegapiMZyZe02CyuOnRmbnQ==",
+      "dev": true
+    },
+    "unicode-match-property-ecmascript": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.4.tgz",
+      "integrity": "sha512-L4Qoh15vTfntsn4P1zqnHulG0LdXgjSO035fEpdtp6YxXhMT51Q6vgM5lYdG/5X3MjS+k/Y9Xw4SFCY9IkR0rg==",
+      "dev": true,
+      "requires": {
+        "unicode-canonical-property-names-ecmascript": "^1.0.4",
+        "unicode-property-aliases-ecmascript": "^1.0.4"
+      }
+    },
+    "unicode-match-property-value-ecmascript": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.0.2.tgz",
+      "integrity": "sha512-Rx7yODZC1L/T8XKo/2kNzVAQaRE88AaMvI1EF/Xnj3GW2wzN6fop9DDWuFAKUVFH7vozkz26DzP0qyWLKLIVPQ==",
+      "dev": true
+    },
+    "unicode-property-aliases-ecmascript": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.4.tgz",
+      "integrity": "sha512-2WSLa6OdYd2ng8oqiGIWnJqyFArvhn+5vgx5GTxMbUYjCYKUcuKS62YLFF0R/BDGlB1yzXjQOLtPAfHsgirEpg==",
+      "dev": true
+    },
     "update-check": {
       "version": "1.5.2",
       "resolved": "https://registry.npmjs.org/update-check/-/update-check-1.5.2.tgz",
@@ -749,6 +1041,12 @@
       "requires": {
         "punycode": "2.1.1"
       }
+    },
+    "vlq": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/vlq/-/vlq-1.0.0.tgz",
+      "integrity": "sha512-o3WmXySo+oI5thgqr7Qy8uBkT/v9Zr+sRyrh1lr8aWPUkgDWdWt4Nae2WKBrLsocgE8BuWWD0jLc+VW8LeU+2g==",
+      "dev": true
     }
   }
 }
diff --git a/package.json b/package.json
index 7e1e08d..2963c09 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
     "rollup": "^0.57.1",
     "rollup-plugin-buble": "^0.19.2",
     "rollup-plugin-commonjs": "^9.1.0",
-    "rollup-plugin-node-resolve": "^3.3.0",
+    "rollup-plugin-node-resolve": "^4.0.0",
     "rollup-plugin-svelte": "^4.2.1",
     "rollup-plugin-uglify": "^3.0.0",
     "serve": "^7.2.0",