upgrade webpack-cli to v4

added dev dep source-map-loader

package.json

@@ -46,6 +46,7 @@
     "node-sass": "^5.0.0",
     "postcss-loader": "^3.0.0",
     "postcss-preset-env": "^6.7.0",
+    "source-map-loader": "^1.1.1",
     "style-loader": "^2.0.0",
     "stylelint": "^13.7.2",
     "stylelint-config-rational-order": "^0.1.2",
@@ -120,7 +121,7 @@
   ],
   "scripts": {
     "start": "yarn serve",
-    "serve": "webpack-dev-server --config webpack.dev.js --open",
+    "serve": "webpack serve --config webpack.dev.js",
     "prepare": "webpack --config webpack.prod.js",
     "build:development": "webpack --config webpack.dev.js",
     "build:production": "webpack --config webpack.prod.js",

webpack.dev.js

@@ -19,12 +19,17 @@ module.exports = merge(common, {
             {
                 test: /\.js$/,
                 exclude: /node_modules[\\/](?!date-fns|epubjs|query-string|split-on-first)/,
-                use: {
+                use: [{
                     loader: 'babel-loader',
                     options: {
                         presets: packageConfig.babel.presets
                     }
-                }
+                }]
+            },
+            {
+                test: /\.js$/,
+                enforce: 'pre',
+                use: ['source-map-loader']
             },
             {
                 test: /\.css$/i,

yarn.lock

@@ -1261,6 +1261,11 @@
   resolved "https://registry.yarnpkg.com/@xtuc/long/-/long-4.2.2.tgz#d291c6a4e97989b5c61d9acf396ae4fe133a718d"
   integrity sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ==
 
+abab@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.5.tgz#c0b678fb32d60fc1219c784d6a826fe385aeb79a"
+  integrity sha512-9IK9EadsbHo6jLWIpxpR6pL0sazTXV6+SQv25ZB+F7Bj9mJNaOc4nCRabwd5M/JwmUa8idz6Eci6eKfJryPs6Q==
+
 abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
@@ -5903,6 +5908,13 @@ iconv-lite@0.4.24:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
+iconv-lite@^0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.6.2.tgz#ce13d1875b0c3a674bd6a04b7f76b01b1b6ded01"
+  integrity sha512-2y91h5OpQlolefMPmUlivelittSWy0rP+oYVpn6A7GwVHNE8AWzoYOBNmlwks3LobaJxgHCYZAnyNo2GgpNRNQ==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3.0.0"
+
 icss-utils@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/icss-utils/-/icss-utils-5.0.0.tgz#03ed56c3accd32f9caaf1752ebf64ef12347bb84"
@@ -10330,7 +10342,7 @@ safe-regex@^1.1.0:
   dependencies:
     ret "~0.1.10"
 
-"safer-buffer@>= 2.1.2 < 3", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
+"safer-buffer@>= 2.1.2 < 3", "safer-buffer@>= 2.1.2 < 3.0.0", safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
   integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
@@ -10762,6 +10774,18 @@ source-list-map@^2.0.0, source-list-map@^2.0.1:
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
   integrity sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==
 
+source-map-loader@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/source-map-loader/-/source-map-loader-1.1.1.tgz#1dd964294cfcc3d9bab65f46af97a38d8ae0c65d"
+  integrity sha512-m2HjSWP2R1yR9P31e4+ciGHFOPvW6GmqHgZkneOkrME2VvWysXTGi4o0yS28iKWWP3vAUmAoa+3x5ZRI2BIX6A==
+  dependencies:
+    abab "^2.0.5"
+    iconv-lite "^0.6.2"
+    loader-utils "^2.0.0"
+    schema-utils "^3.0.0"
+    source-map "^0.6.1"
+    whatwg-mimetype "^2.3.0"
+
 source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
   version "0.5.3"
   resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.3.tgz#190866bece7553e1f8f267a2ee82c606b5509a1a"
@@ -12598,6 +12622,11 @@ whatwg-fetch@^3.4.1:
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.4.1.tgz#e5f871572d6879663fa5674c8f833f15a8425ab3"
   integrity sha512-sofZVzE1wKwO+EYPbWfiwzaKovWiZXf4coEzjGP9b2GBVgQRLQUZ2QcuPpQExGDAW5GItpEm6Tl4OU5mywnAoQ==
 
+whatwg-mimetype@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
+  integrity sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==
+
 which-module@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"