diff --git a/example-04-css-autoprefixer-usage/package-lock.json b/example-04-css-autoprefixer-usage/package-lock.json
index 26585d9..f2a1ac2 100644
--- a/example-04-css-autoprefixer-usage/package-lock.json
+++ b/example-04-css-autoprefixer-usage/package-lock.json
@@ -4,6 +4,12 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@types/json-schema": {
+      "version": "7.0.5",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.5.tgz",
+      "integrity": "sha512-7+2BITlgjgDhH0vvwZU/HZJVyk+2XUlvxXe8dFMedNX/aMkaOq++rMAFXc0tM7ij15QaWlbdQASBR9dihi+bDQ==",
+      "dev": true
+    },
     "@webassemblyjs/ast": {
       "version": "1.8.5",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.8.5.tgz",
@@ -979,44 +985,6 @@
         "randomfill": "^1.0.3"
       }
     },
-    "css-loader": {
-      "version": "3.4.2",
-      "resolved": "https://registry.npmjs.org/css-loader/-/css-loader-3.4.2.tgz",
-      "integrity": "sha512-jYq4zdZT0oS0Iykt+fqnzVLRIeiPWhka+7BqPn+oSIpWJAHak5tmB/WZrJ2a21JhCeFyNnnlroSl8c+MtVndzA==",
-      "dev": true,
-      "requires": {
-        "camelcase": "^5.3.1",
-        "cssesc": "^3.0.0",
-        "icss-utils": "^4.1.1",
-        "loader-utils": "^1.2.3",
-        "normalize-path": "^3.0.0",
-        "postcss": "^7.0.23",
-        "postcss-modules-extract-imports": "^2.0.0",
-        "postcss-modules-local-by-default": "^3.0.2",
-        "postcss-modules-scope": "^2.1.1",
-        "postcss-modules-values": "^3.0.0",
-        "postcss-value-parser": "^4.0.2",
-        "schema-utils": "^2.6.0"
-      },
-      "dependencies": {
-        "schema-utils": {
-          "version": "2.6.4",
-          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-2.6.4.tgz",
-          "integrity": "sha512-VNjcaUxVnEeun6B2fiiUDjXXBtD4ZSH7pdbfIu1pOFwgptDPLMo/z9jr4sUfsjFVPqDCEin/F7IYlq7/E6yDbQ==",
-          "dev": true,
-          "requires": {
-            "ajv": "^6.10.2",
-            "ajv-keywords": "^3.4.1"
-          }
-        }
-      }
-    },
-    "cssesc": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
-      "integrity": "sha512-/Tb/JcjK111nNScGob5MNtsntNM1aCNUDipB/TkwZFhyDrrE47SOx/18wF2bbjgc3ZzCSKW1T5nt5EbFoAz/Vg==",
-      "dev": true
-    },
     "cyclist": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/cyclist/-/cyclist-1.0.1.tgz",
@@ -1137,9 +1105,9 @@
       "dev": true
     },
     "elliptic": {
-      "version": "6.5.2",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
-      "integrity": "sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==",
+      "version": "6.5.3",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+      "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
       "dev": true,
       "requires": {
         "bn.js": "^4.4.0",
@@ -2283,15 +2251,6 @@
       "integrity": "sha1-7AbBDgo0wPL68Zn3/X/Hj//QPHM=",
       "dev": true
     },
-    "icss-utils": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/icss-utils/-/icss-utils-4.1.1.tgz",
-      "integrity": "sha512-4aFq7wvWyMHKgxsH8QQtGpvbASCf+eM3wPRLI6R+MgAnTCZ6STYsRvttLvRWK0Nfif5piF394St3HeJDaljGPA==",
-      "dev": true,
-      "requires": {
-        "postcss": "^7.0.14"
-      }
-    },
     "ieee754": {
       "version": "1.1.13",
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.13.tgz",
@@ -2348,12 +2307,6 @@
       "integrity": "sha1-khi5srkoojixPcT7a21XbyMUU+o=",
       "dev": true
     },
-    "indexes-of": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/indexes-of/-/indexes-of-1.0.1.tgz",
-      "integrity": "sha1-8w9xbI4r00bHtn0985FVZqfAVgc=",
-      "dev": true
-    },
     "infer-owner": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/infer-owner/-/infer-owner-1.0.4.tgz",
@@ -3271,58 +3224,6 @@
         "schema-utils": "^1.0.0"
       }
     },
-    "postcss-modules-extract-imports": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/postcss-modules-extract-imports/-/postcss-modules-extract-imports-2.0.0.tgz",
-      "integrity": "sha512-LaYLDNS4SG8Q5WAWqIJgdHPJrDDr/Lv775rMBFUbgjTz6j34lUznACHcdRWroPvXANP2Vj7yNK57vp9eFqzLWQ==",
-      "dev": true,
-      "requires": {
-        "postcss": "^7.0.5"
-      }
-    },
-    "postcss-modules-local-by-default": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/postcss-modules-local-by-default/-/postcss-modules-local-by-default-3.0.2.tgz",
-      "integrity": "sha512-jM/V8eqM4oJ/22j0gx4jrp63GSvDH6v86OqyTHHUvk4/k1vceipZsaymiZ5PvocqZOl5SFHiFJqjs3la0wnfIQ==",
-      "dev": true,
-      "requires": {
-        "icss-utils": "^4.1.1",
-        "postcss": "^7.0.16",
-        "postcss-selector-parser": "^6.0.2",
-        "postcss-value-parser": "^4.0.0"
-      }
-    },
-    "postcss-modules-scope": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/postcss-modules-scope/-/postcss-modules-scope-2.1.1.tgz",
-      "integrity": "sha512-OXRUPecnHCg8b9xWvldG/jUpRIGPNRka0r4D4j0ESUU2/5IOnpsjfPPmDprM3Ih8CgZ8FXjWqaniK5v4rWt3oQ==",
-      "dev": true,
-      "requires": {
-        "postcss": "^7.0.6",
-        "postcss-selector-parser": "^6.0.0"
-      }
-    },
-    "postcss-modules-values": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/postcss-modules-values/-/postcss-modules-values-3.0.0.tgz",
-      "integrity": "sha512-1//E5jCBrZ9DmRX+zCtmQtRSV6PV42Ix7Bzj9GbwJceduuf7IqP8MgeTXuRDHOWj2m0VzZD5+roFWDuU8RQjcg==",
-      "dev": true,
-      "requires": {
-        "icss-utils": "^4.0.0",
-        "postcss": "^7.0.6"
-      }
-    },
-    "postcss-selector-parser": {
-      "version": "6.0.2",
-      "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.2.tgz",
-      "integrity": "sha512-36P2QR59jDTOAiIkqEprfJDsoNrvwFei3eCqKd1Y0tUsBimsq39BLp7RD+JWny3WgB1zGhJX8XVePwm9k4wdBg==",
-      "dev": true,
-      "requires": {
-        "cssesc": "^3.0.0",
-        "indexes-of": "^1.0.1",
-        "uniq": "^1.0.1"
-      }
-    },
     "postcss-value-parser": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.0.2.tgz",
@@ -3958,6 +3859,73 @@
       "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
       "dev": true
     },
+    "style-loader": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-1.2.1.tgz",
+      "integrity": "sha512-ByHSTQvHLkWE9Ir5+lGbVOXhxX10fbprhLvdg96wedFZb4NDekDPxVKv5Fwmio+QcMlkkNfuK+5W1peQ5CUhZg==",
+      "dev": true,
+      "requires": {
+        "loader-utils": "^2.0.0",
+        "schema-utils": "^2.6.6"
+      },
+      "dependencies": {
+        "ajv": {
+          "version": "6.12.3",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.3.tgz",
+          "integrity": "sha512-4K0cK3L1hsqk9xIb2z9vs/XU+PGJZ9PNpJRDS9YLzmNdX6jmVPfamLvTJr0aDAusnHyCHO6MjzlkAsgtqp9teA==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^3.1.1",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.4.1",
+            "uri-js": "^4.2.2"
+          }
+        },
+        "emojis-list": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/emojis-list/-/emojis-list-3.0.0.tgz",
+          "integrity": "sha512-/kyM18EfinwXZbno9FyUGeFh87KC8HRQBQGildHZbEuRyWFOmv1U10o9BBp8XVZDVNNuQKyIGIu5ZYAAXJ0V2Q==",
+          "dev": true
+        },
+        "json5": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/json5/-/json5-2.1.3.tgz",
+          "integrity": "sha512-KXPvOm8K9IJKFM0bmdn8QXh7udDh1g/giieX0NLCaMnb4hEiVFqnop2ImTXCc5e0/oHz3LTqmHGtExn5hfMkOA==",
+          "dev": true,
+          "requires": {
+            "minimist": "^1.2.5"
+          }
+        },
+        "loader-utils": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.0.tgz",
+          "integrity": "sha512-rP4F0h2RaWSvPEkD7BLDFQnvSf+nK+wr3ESUjNTyAGobqrijmW92zc+SO6d4p4B1wh7+B/Jg1mkQe5NYUEHtHQ==",
+          "dev": true,
+          "requires": {
+            "big.js": "^5.2.2",
+            "emojis-list": "^3.0.0",
+            "json5": "^2.1.2"
+          }
+        },
+        "minimist": {
+          "version": "1.2.5",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
+          "dev": true
+        },
+        "schema-utils": {
+          "version": "2.7.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-2.7.0.tgz",
+          "integrity": "sha512-0ilKFI6QQF5nxDZLFn2dMjvc4hjg/Wkg7rHd3jK6/A4a1Hl9VFdQWvgB1UMGoU94pad1P/8N7fMcEnLnSiju8A==",
+          "dev": true,
+          "requires": {
+            "@types/json-schema": "^7.0.4",
+            "ajv": "^6.12.2",
+            "ajv-keywords": "^3.4.1"
+          }
+        }
+      }
+    },
     "supports-color": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
@@ -4098,12 +4066,6 @@
         "set-value": "^2.0.1"
       }
     },
-    "uniq": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/uniq/-/uniq-1.0.1.tgz",
-      "integrity": "sha1-sxxa6CVIRKOoKBVBzisEuGWnNP8=",
-      "dev": true
-    },
     "unique-filename": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/unique-filename/-/unique-filename-1.1.1.tgz",
diff --git a/example-04-css-autoprefixer-usage/yarn.lock b/example-04-css-autoprefixer-usage/yarn.lock
index 0dce6a9..6ecb767 100644
--- a/example-04-css-autoprefixer-usage/yarn.lock
+++ b/example-04-css-autoprefixer-usage/yarn.lock
@@ -326,9 +326,9 @@ bluebird@^3.5.5:
   integrity sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==
 
 bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
-  version "4.11.8"
-  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
-  integrity sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==
+  version "4.11.9"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.9.tgz#26d556829458f9d1e81fc48952493d0ba3507828"
+  integrity sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==
 
 brace-expansion@^1.1.7:
   version "1.1.11"
@@ -821,9 +821,9 @@ electron-to-chromium@^1.3.338:
   integrity sha512-hRFBAglhcj5iVYH+o8QU0+XId1WGoc0VGowJB1cuJAt3exHGrivZvWeAO5BRgBZqwZtwxjm8a5MQeGoT/Su3ww==
 
 elliptic@^6.0.0:
-  version "6.5.2"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.2.tgz#05c5678d7173c049d8ca433552224a495d0e3762"
-  integrity sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.3.tgz#cb59eb2efdaf73a0bd78ccd7015a62ad6e0f93d6"
+  integrity sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==
   dependencies:
     bn.js "^4.4.0"
     brorand "^1.0.1"