Add first loaders to handle css

- Installed style-loader and css-loader
- Configured webpack.config to use both loaders on css files
- Remember the order we use them in webpack.config matters

package-lock.json

@@ -897,6 +897,30 @@
         "randomfill": "^1.0.3"
       }
     },
+    "css-loader": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/css-loader/-/css-loader-2.1.0.tgz",
+      "integrity": "sha512-MoOu+CStsGrSt5K2OeZ89q3Snf+IkxRfAIt9aAKg4piioTrhtP1iEFPu+OVn3Ohz24FO6L+rw9UJxBILiSBw5Q==",
+      "dev": true,
+      "requires": {
+        "icss-utils": "^4.0.0",
+        "loader-utils": "^1.2.1",
+        "lodash": "^4.17.11",
+        "postcss": "^7.0.6",
+        "postcss-modules-extract-imports": "^2.0.0",
+        "postcss-modules-local-by-default": "^2.0.3",
+        "postcss-modules-scope": "^2.0.0",
+        "postcss-modules-values": "^2.0.0",
+        "postcss-value-parser": "^3.3.0",
+        "schema-utils": "^1.0.0"
+      }
+    },
+    "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": "0.2.2",
       "resolved": "https://registry.npmjs.org/cyclist/-/cyclist-0.2.2.tgz",
@@ -2094,6 +2118,21 @@
       "integrity": "sha1-7AbBDgo0wPL68Zn3/X/Hj//QPHM=",
       "dev": true
     },
+    "icss-replace-symbols": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/icss-replace-symbols/-/icss-replace-symbols-1.1.0.tgz",
+      "integrity": "sha1-Bupvg2ead0njhs/h/oEq5dsiPe0=",
+      "dev": true
+    },
+    "icss-utils": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/icss-utils/-/icss-utils-4.1.0.tgz",
+      "integrity": "sha512-3DEun4VOeMvSczifM3F2cKQrDQ5Pj6WKhkOq6HD4QTnDUAq8MQRxy5TX6Sy1iY6WPBe4gQ3p5vTECjbIkglkkQ==",
+      "dev": true,
+      "requires": {
+        "postcss": "^7.0.14"
+      }
+    },
     "ieee754": {
       "version": "1.1.12",
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.12.tgz",
@@ -2122,6 +2161,12 @@
       "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
+    },
     "indexof": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/indexof/-/indexof-0.0.1.tgz",
@@ -2385,6 +2430,12 @@
         "path-exists": "^3.0.0"
       }
     },
+    "lodash": {
+      "version": "4.17.11",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
+      "dev": true
+    },
     "lru-cache": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz",
@@ -2927,6 +2978,91 @@
       "integrity": "sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=",
       "dev": true
     },
+    "postcss": {
+      "version": "7.0.14",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.14.tgz",
+      "integrity": "sha512-NsbD6XUUMZvBxtQAJuWDJeeC4QFsmWsfozWxCJPWf3M55K9iu2iMDaKqyoOdTJ1R4usBXuxlVFAIo8rZPQD4Bg==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.4.2",
+        "source-map": "^0.6.1",
+        "supports-color": "^6.1.0"
+      },
+      "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
+        },
+        "supports-color": {
+          "version": "6.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
+          "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
+      }
+    },
+    "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": "2.0.6",
+      "resolved": "https://registry.npmjs.org/postcss-modules-local-by-default/-/postcss-modules-local-by-default-2.0.6.tgz",
+      "integrity": "sha512-oLUV5YNkeIBa0yQl7EYnxMgy4N6noxmiwZStaEJUSe2xPMcdNc8WmBQuQCx18H5psYbVxz8zoHk0RAAYZXP9gA==",
+      "dev": true,
+      "requires": {
+        "postcss": "^7.0.6",
+        "postcss-selector-parser": "^6.0.0",
+        "postcss-value-parser": "^3.3.1"
+      }
+    },
+    "postcss-modules-scope": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/postcss-modules-scope/-/postcss-modules-scope-2.1.0.tgz",
+      "integrity": "sha512-91Rjps0JnmtUB0cujlc8KIKCsJXWjzuxGeT/+Q2i2HXKZ7nBUeF9YQTZZTNvHVoNYj1AthsjnGLtqDUE0Op79A==",
+      "dev": true,
+      "requires": {
+        "postcss": "^7.0.6",
+        "postcss-selector-parser": "^6.0.0"
+      }
+    },
+    "postcss-modules-values": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/postcss-modules-values/-/postcss-modules-values-2.0.0.tgz",
+      "integrity": "sha512-Ki7JZa7ff1N3EIMlPnGTZfUMe69FFwiQPnVSXC9mnn3jozCRBYIxiZd44yJOV2AmabOo4qFf8s0dC/+lweG7+w==",
+      "dev": true,
+      "requires": {
+        "icss-replace-symbols": "^1.1.0",
+        "postcss": "^7.0.6"
+      }
+    },
+    "postcss-selector-parser": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.1.tgz",
+      "integrity": "sha512-bg46FvHx2lSHput5J4xCiCHrRxjza73jceSW8JcOVNzCEnlhuZF7pLa7K0KpNt8whL7C8V5wdb0bSrCRg0w13g==",
+      "dev": true,
+      "requires": {
+        "cssesc": "^3.0.0",
+        "indexes-of": "^1.0.1",
+        "uniq": "^1.0.1"
+      }
+    },
+    "postcss-value-parser": {
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-3.3.1.tgz",
+      "integrity": "sha512-pISE66AbVkp4fDQ7VHBwRNXzAAKJjw4Vw7nWI/+Q3vuly7SNfgYXvm6i5IgFylHGK5sP/xHAbB7N49OS4gWNyQ==",
+      "dev": true
+    },
     "process": {
       "version": "0.11.10",
       "resolved": "https://registry.npmjs.org/process/-/process-0.11.10.tgz",
@@ -3538,6 +3674,16 @@
       "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
       "dev": true
     },
+    "style-loader": {
+      "version": "0.23.1",
+      "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-0.23.1.tgz",
+      "integrity": "sha512-XK+uv9kWwhZMZ1y7mysB+zoihsEj4wneFWAS5qoiLwzW0WzSqMrrsIy+a3zkQJq0ipFtBpX5W3MqyRIBF/WFGg==",
+      "dev": true,
+      "requires": {
+        "loader-utils": "^1.1.0",
+        "schema-utils": "^1.0.0"
+      }
+    },
     "supports-color": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
@@ -3716,6 +3862,12 @@
         }
       }
     },
+    "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",

package.json

@@ -11,6 +11,8 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
+    "css-loader": "^2.1.0",
+    "style-loader": "^0.23.1",
     "webpack": "^4.29.6",
     "webpack-cli": "^3.2.3"
   }

src/index.js

@@ -1,4 +1,5 @@
 import { run } from "./app/app";
+import "./main.css";
 import { AlertService } from "./app/alert.service";
 import { ComponentService } from "./app/component.service";
 const alertService = new AlertService();

src/main.css

@@ -0,0 +1,3 @@
+body {
+  background: purple;
+}

webpack.config.js

@@ -5,5 +5,13 @@ module.exports = {
   output: {
     filename: "main.js",
     path: path.resolve(__dirname, "dist")
+  },
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: ["style-loader", "css-loader"]
+      }
+    ]
   }
 };