Cache busting and HtmlWebpackPlugin

- Configured webpack to use contentHash in bundle file name
- This caused a problem with out script tag in index.html
- We installed HtmlWebpackPlugin to help us generate a new index.html
- It automatically includes the correct script tag at the bottom
- We created a template file that we passed in called template.html
- We deleted the original index.html because we don't need it anymore
- Make sure you are opening dist/index.html now to view the app

package-lock.json

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@@ -715,6 +721,16 @@
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+      "resolved": "https://registry.npmjs.org/camel-case/-/camel-case-3.0.0.tgz",
+      "integrity": "sha1-yjw2iKTpzzpM2nd9xNy8cTJJz3M=",
+      "dev": true,
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       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.2.0.tgz",
@@ -824,6 +840,23 @@
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+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.1.tgz",
+      "integrity": "sha512-4ZxI6dy4lrY6FHzfiy1aEOXgu4LIsW2MhwG0VBKdcoGoH/XLFgaHSdLTGr4O8Be6A8r3MOphEiI8Gc1n0ecf3g==",
+      "dev": true,
+      "requires": {
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+        }
+      }
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@@ -1057,6 +1090,24 @@
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       }
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+      "resolved": "https://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
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+      "dev": true,
+      "requires": {
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+        "css-what": "2.1",
+        "domutils": "1.5.1",
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+    "css-what": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/css-what/-/css-what-2.1.3.tgz",
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+    },
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@@ -1114,6 +1165,15 @@
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       "dev": true
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+    "define-properties": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
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+      "dev": true,
+      "requires": {
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@@ -1194,12 +1254,56 @@
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+      "resolved": "https://registry.npmjs.org/dom-converter/-/dom-converter-0.2.0.tgz",
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+      "dev": true,
+      "requires": {
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+      }
+    },
+    "dom-serializer": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.1.tgz",
+      "integrity": "sha512-l0IU0pPzLWSHBcieZbpOKgkIn3ts3vAh7ZuFyXNwJxJXk/c4Gwj9xaTJwIDVQCXawWD0qb3IzMGH5rglQaO0XA==",
+      "dev": true,
+      "requires": {
+        "domelementtype": "^1.3.0",
+        "entities": "^1.1.1"
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     "domain-browser": {
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       "resolved": "https://registry.npmjs.org/domain-browser/-/domain-browser-1.2.0.tgz",
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       "dev": true
     },
+    "domelementtype": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.1.tgz",
+      "integrity": "sha512-BSKB+TSpMpFI/HOxCNr1O8aMOTZ8hT3pM3GQ0w/mWRmkhEDSFJkkyzz4XQsBV44BChwGkrDfMyjVD0eA2aFV3w==",
+      "dev": true
+    },
+    "domhandler": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.4.2.tgz",
+      "integrity": "sha512-JiK04h0Ht5u/80fdLMCEmV4zkNh2BcoMFBmZ/91WtYZ8qVXSKjiw7fXMgFPnHcSZgOo3XdinHvmnDUeMf5R4wA==",
+      "dev": true,
+      "requires": {
+        "domelementtype": "1"
+      }
+    },
+    "domutils": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-1.5.1.tgz",
+      "integrity": "sha1-3NhIiib1Y9YQeeSMn3t+Mjc2gs8=",
+      "dev": true,
+      "requires": {
+        "dom-serializer": "0",
+        "domelementtype": "1"
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+    },
     "duplexify": {
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       "resolved": "https://registry.npmjs.org/duplexify/-/duplexify-3.7.1.tgz",
@@ -1263,6 +1367,12 @@
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       }
     },
+    "entities": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.2.tgz",
+      "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
+      "dev": true
+    },
     "errno": {
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@@ -1281,6 +1391,31 @@
         "is-arrayish": "^0.2.1"
       }
     },
+    "es-abstract": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.13.0.tgz",
+      "integrity": "sha512-vDZfg/ykNxQVwup/8E1BZhVzFfBxs9NqMzGcvIJrqg5k2/5Za2bWo40dK2J1pgLngZ7c+Shh8lwYtLGyrwPutg==",
+      "dev": true,
+      "requires": {
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+        "function-bind": "^1.1.1",
+        "has": "^1.0.3",
+        "is-callable": "^1.1.4",
+        "is-regex": "^1.0.4",
+        "object-keys": "^1.0.12"
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+    "es-to-primitive": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.0.tgz",
+      "integrity": "sha512-qZryBOJjV//LaxLTV6UC//WewneB3LcXOL9NP++ozKVXsIIIpm/2c13UDiD9Jp2eThsecw9m3jPqDwTyobcdbg==",
+      "dev": true,
+      "requires": {
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+        "is-date-object": "^1.0.1",
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@@ -2189,6 +2324,12 @@
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+      "dev": true
+    },
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@@ -2379,6 +2520,15 @@
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+      "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
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+      "dev": true,
+      "requires": {
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@@ -2402,6 +2552,12 @@
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       "dev": true
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+    "has-symbols": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.0.tgz",
+      "integrity": "sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=",
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@@ -2460,6 +2616,12 @@
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+    "he": {
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+      "resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
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+      "dev": true
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       "dev": true
     },
+    "html-minifier": {
+      "version": "3.5.21",
+      "resolved": "https://registry.npmjs.org/html-minifier/-/html-minifier-3.5.21.tgz",
+      "integrity": "sha512-LKUKwuJDhxNa3uf/LPR/KVjm/l3rBqtYeCOAekvG8F1vItxMUpueGd94i/asDDr8/1u7InxzFA5EeGjhhG5mMA==",
+      "dev": true,
+      "requires": {
+        "camel-case": "3.0.x",
+        "clean-css": "4.2.x",
+        "commander": "2.17.x",
+        "he": "1.2.x",
+        "param-case": "2.1.x",
+        "relateurl": "0.2.x",
+        "uglify-js": "3.4.x"
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+    },
+    "html-webpack-plugin": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/html-webpack-plugin/-/html-webpack-plugin-3.2.0.tgz",
+      "integrity": "sha1-sBq71yOsqqeze2r0SS69oD2d03s=",
+      "dev": true,
+      "requires": {
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+        "loader-utils": "^0.2.16",
+        "lodash": "^4.17.3",
+        "pretty-error": "^2.0.2",
+        "tapable": "^1.0.0",
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+          "dev": true
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+        "json5": {
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+          "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+          "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
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+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-0.2.17.tgz",
+          "integrity": "sha1-+G5jdNQyBabmxg6RlvF8Apm/s0g=",
+          "dev": true,
+          "requires": {
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+            "emojis-list": "^2.0.0",
+            "json5": "^0.5.0",
+            "object-assign": "^4.0.1"
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+      }
+    },
+    "htmlparser2": {
+      "version": "3.10.1",
+      "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.10.1.tgz",
+      "integrity": "sha512-IgieNijUMbkDovyoKObU1DUhm1iwNYE/fuifEoEHfd1oZKZDaONBSkal7Y01shxsM49R4XaMdGez3WnF9UfiCQ==",
+      "dev": true,
+      "requires": {
+        "domelementtype": "^1.3.1",
+        "domhandler": "^2.3.0",
+        "domutils": "^1.5.1",
+        "entities": "^1.1.1",
+        "inherits": "^2.0.1",
+        "readable-stream": "^3.1.1"
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+      "dependencies": {
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+            "string_decoder": "^1.1.1",
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     },
+    "is-callable": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.4.tgz",
+      "integrity": "sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==",
+      "dev": true
+    },
     "is-data-descriptor": {
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       "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
@@ -2668,6 +2919,12 @@
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       }
     },
+    "is-date-object": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/is-date-object/-/is-date-object-1.0.1.tgz",
+      "integrity": "sha1-mqIOtq7rv/d/vTPnTKAbM1gdOhY=",
+      "dev": true
+    },
     "is-descriptor": {
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       "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-0.1.6.tgz",
@@ -2752,12 +3009,30 @@
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+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.4.tgz",
+      "integrity": "sha1-VRdIm1RwkbCTDglWVM7SXul+lJE=",
+      "dev": true,
+      "requires": {
+        "has": "^1.0.1"
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     "is-stream": {
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       "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
       "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
       "dev": true
     },
+    "is-symbol": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.2.tgz",
+      "integrity": "sha512-HS8bZ9ox60yCJLH9snBpIwv9pYUAkcuLhSA1oero1UB5y9aiQpRA8y2ex945AOtCZL1lJDeIk3G5LthswI46Lw==",
+      "dev": true,
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@@ -2960,6 +3235,12 @@
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+      "resolved": "https://registry.npmjs.org/lower-case/-/lower-case-1.1.4.tgz",
+      "integrity": "sha1-miyr0bno4K6ZOkv31YdcOcQujqw=",
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+    "no-case": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/no-case/-/no-case-2.3.2.tgz",
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+      "dev": true,
+      "requires": {
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@@ -3484,6 +3774,15 @@
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+      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-1.0.2.tgz",
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+      "dev": true,
+      "requires": {
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@@ -3533,6 +3832,12 @@
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+    "object-keys": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.0.tgz",
+      "integrity": "sha512-6OO5X1+2tYkNyNEx6TsCxEqFfRWaqx6EtMiSbGrw8Ob8v9Ne+Hl8rBAgLBZn5wjEz3s/s6U1WXFUFOcxxAwUpg==",
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       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/object-visit/-/object-visit-1.0.1.tgz",
@@ -3542,6 +3847,16 @@
         "isobject": "^3.0.0"
       }
     },
+    "object.getownpropertydescriptors": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz",
+      "integrity": "sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "es-abstract": "^1.5.1"
+      }
+    },
     "object.pick": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/object.pick/-/object.pick-1.3.0.tgz",
@@ -3658,6 +3973,15 @@
         "readable-stream": "^2.1.5"
       }
     },
+    "param-case": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/param-case/-/param-case-2.1.1.tgz",
+      "integrity": "sha1-35T9jPZTHs915r75oIWPvHK+Ikc=",
+      "dev": true,
+      "requires": {
+        "no-case": "^2.2.0"
+      }
+    },
     "parse-asn1": {
       "version": "5.1.4",
       "resolved": "https://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.4.tgz",
@@ -3888,6 +4212,16 @@
       "integrity": "sha512-pISE66AbVkp4fDQ7VHBwRNXzAAKJjw4Vw7nWI/+Q3vuly7SNfgYXvm6i5IgFylHGK5sP/xHAbB7N49OS4gWNyQ==",
       "dev": true
     },
+    "pretty-error": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/pretty-error/-/pretty-error-2.1.1.tgz",
+      "integrity": "sha1-X0+HyPkeWuPzuoerTPXgOxoX8aM=",
+      "dev": true,
+      "requires": {
+        "renderkid": "^2.0.1",
+        "utila": "~0.4"
+      }
+    },
     "process": {
       "version": "0.11.10",
       "resolved": "https://registry.npmjs.org/process/-/process-0.11.10.tgz",
@@ -4102,12 +4436,48 @@
         "safe-regex": "^1.1.0"
       }
     },
+    "relateurl": {
+      "version": "0.2.7",
+      "resolved": "https://registry.npmjs.org/relateurl/-/relateurl-0.2.7.tgz",
+      "integrity": "sha1-VNvzd+UUQKypCkzSdGANP/LYiKk=",
+      "dev": true
+    },
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
       "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8=",
       "dev": true
     },
+    "renderkid": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/renderkid/-/renderkid-2.0.3.tgz",
+      "integrity": "sha512-z8CLQp7EZBPCwCnncgf9C4XAi3WR0dv+uWu/PjIyhhAb5d6IJ/QZqlHFprHeKT+59//V6BNUsLbvN8+2LarxGA==",
+      "dev": true,
+      "requires": {
+        "css-select": "^1.1.0",
+        "dom-converter": "^0.2",
+        "htmlparser2": "^3.3.0",
+        "strip-ansi": "^3.0.0",
+        "utila": "^0.4.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        }
+      }
+    },
     "repeat-element": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/repeat-element/-/repeat-element-1.1.3.tgz",
@@ -5029,6 +5399,12 @@
         "repeat-string": "^1.6.1"
       }
     },
+    "toposort": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/toposort/-/toposort-1.0.7.tgz",
+      "integrity": "sha1-LmhELZ9k7HILjMieZEOsbKqVACk=",
+      "dev": true
+    },
     "tough-cookie": {
       "version": "2.4.3",
       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
@@ -5095,6 +5471,24 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
       "dev": true
     },
+    "uglify-js": {
+      "version": "3.4.9",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.9.tgz",
+      "integrity": "sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==",
+      "dev": true,
+      "requires": {
+        "commander": "~2.17.1",
+        "source-map": "~0.6.1"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
+      }
+    },
     "union-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
@@ -5200,6 +5594,12 @@
       "integrity": "sha512-bzpH/oBhoS/QI/YtbkqCg6VEiPYjSZtrHQM6/QnJS6OL9pKUFLqb3aFh4Scvwm45+7iAgiMkLhSbaZxUqmrprw==",
       "dev": true
     },
+    "upper-case": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/upper-case/-/upper-case-1.1.3.tgz",
+      "integrity": "sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=",
+      "dev": true
+    },
     "uri-js": {
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
@@ -5254,6 +5654,22 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
       "dev": true
     },
+    "util.promisify": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/util.promisify/-/util.promisify-1.0.0.tgz",
+      "integrity": "sha512-i+6qA2MPhvoKLuxnJNpXAGhg7HphQOSUq2LKMZD0m15EiskXUkMvKdF4Uui0WYeCUGea+o2cw/ZuwehtfsrNkA==",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "object.getownpropertydescriptors": "^2.0.3"
+      }
+    },
+    "utila": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/utila/-/utila-0.4.0.tgz",
+      "integrity": "sha1-ihagXURWV6Oupe7MWxKk+lN5dyw=",
+      "dev": true
+    },
     "uuid": {
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",

package.json

@@ -13,6 +13,7 @@
   "devDependencies": {
     "bootstrap": "^4.3.1",
     "css-loader": "^2.1.0",
+    "html-webpack-plugin": "^3.2.0",
     "node-sass": "^4.11.0",
     "sass-loader": "^7.1.0",
     "style-loader": "^0.23.1",

src/template.html

@@ -2,10 +2,6 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <meta
-      name="viewport"
-      content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"
-    />
     <meta http-equiv="X-UA-Compatible" content="ie=edge" />
     <title>Webpack Demo</title>
   </head>
@@ -33,5 +29,4 @@
     </div>
     <img src="./assets/webpack.svg" />
   </body>
-  <script src="./dist/main.js"></script>
 </html>

webpack.config.js

@@ -1,11 +1,18 @@
 const path = require("path");
+var HtmlWebpackPlugin = require("html-webpack-plugin");
+
 module.exports = {
   mode: "development",
   entry: "./src/index.js",
   output: {
-    filename: "main.js",
+    filename: "main.[contentHash].js",
     path: path.resolve(__dirname, "dist")
   },
+  plugins: [
+    new HtmlWebpackPlugin({
+      template: "./src/template.html"
+    })
+  ],
   module: {
     rules: [
       {