diff --git a/courses/guru/js/package-lock.json b/courses/guru/js/package-lock.json
index 9f767e0..a717afa 100644
--- a/courses/guru/js/package-lock.json
+++ b/courses/guru/js/package-lock.json
@@ -346,100 +346,6 @@
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-            "@babel/generator": "7.4.4",
-            "@babel/helper-function-name": "7.1.0",
-            "@babel/helper-split-export-declaration": "7.4.4",
-            "@babel/parser": "7.4.4",
-            "@babel/types": "7.4.4",
-            "debug": "4.1.1",
-            "globals": "11.11.0",
-            "lodash": "4.17.11"
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-          "dev": true,
-          "requires": {
-            "esutils": "2.0.2",
-            "lodash": "4.17.11",
-            "to-fast-properties": "2.0.0"
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     "@babel/plugin-proposal-unicode-property-regex": {
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       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.4.0.tgz",
@@ -1532,7 +1438,7 @@
     "decode-uri-component": {
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       "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
-      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
+      "integrity": "sha512-hjf+xovcEn31w/EUYdTXQh/8smFL/dzYjohQGEIgjyNavaJfBY2p5F527Bo1VPATxv0VYTUC2bOcXvqFwk78Og==",
       "dev": true
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     "deep-extend": {
@@ -2279,7 +2185,8 @@
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           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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@@ -2300,12 +2207,14 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
@@ -2320,17 +2229,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
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@@ -2447,7 +2359,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
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@@ -2459,6 +2372,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -2473,6 +2387,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.11"
           }
@@ -2480,12 +2395,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "yallist": "3.0.3"
@@ -2504,6 +2421,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -2584,7 +2502,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -2596,6 +2515,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -2681,7 +2601,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -2717,6 +2638,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "is-fullwidth-code-point": "1.0.0",
@@ -2736,6 +2658,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -2779,12 +2702,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },