Merge pull request crabbly#392 from natalan/update-webpack-source-map

Update webpack source map

package.json

@@ -7,31 +7,30 @@
   "types": "src/index.d.ts",
   "repository": "https://github.com/crabbly/Print.js",
   "license": "MIT",
-  "dependencies": {},
   "devDependencies": {
-    "@babel/core": "7.4.5",
-    "@babel/preset-env": "7.4.5",
+    "@babel/core": "7.7.2",
+    "@babel/preset-env": "7.7.1",
     "babel-loader": "8.0.6",
-    "coveralls": "3.0.4",
-    "css-loader": "2.1.1",
+    "coveralls": "3.0.8",
+    "css-loader": "3.2.0",
     "istanbul-instrumenter-loader": "3.0.1",
-    "jasmine-core": "3.4.0",
+    "jasmine-core": "3.5.0",
     "karma": "4.1.0",
     "karma-chrome-launcher": "2.2.0",
     "karma-coverage": "1.1.2",
     "karma-jasmine": "2.0.1",
     "karma-phantomjs-launcher": "1.0.4",
     "karma-sourcemap-loader": "0.3.7",
-    "karma-webpack": "3.0.5",
-    "mini-css-extract-plugin": "0.7.0",
-    "node-sass": "4.12.0",
-    "optimize-css-assets-webpack-plugin": "5.0.1",
-    "sass-loader": "7.1.0",
+    "karma-webpack": "4.0.2",
+    "mini-css-extract-plugin": "0.8.0",
+    "node-sass": "4.13.0",
+    "optimize-css-assets-webpack-plugin": "5.0.3",
+    "sass-loader": "8.0.0",
     "standard": "12.0.1",
-    "uglifyjs-webpack-plugin": "2.1.3",
-    "webpack": "4.33.0",
-    "webpack-cli": "3.3.3",
-    "webpack-dev-server": "3.7.1"
+    "terser-webpack-plugin": "2.2.1",
+    "webpack": "4.41.2",
+    "webpack-cli": "3.3.10",
+    "webpack-dev-server": "3.9.0"
   },
   "scripts": {
     "test": "standard && karma start",

webpack.config.js

@@ -1,10 +1,11 @@
 const path = require('path')
-const UglifyJSPlugin = require('uglifyjs-webpack-plugin')
+const TerserPlugin = require('terser-webpack-plugin')
 const MiniCssExtractPlugin = require('mini-css-extract-plugin')
 const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin')
 
 module.exports = {
   mode: 'development',
+  devtool: 'source-map',
   entry: [
     './src/index.js'
   ],
@@ -71,8 +72,15 @@ module.exports = {
         assetNameRegExp: /\.css$/g,
         canPrint: false
       }),
-      new UglifyJSPlugin({
-        sourceMap: true
+      new TerserPlugin({
+        cache: false,
+        parallel: true,
+        sourceMap: true, // Must be set to true if using source-maps in production
+        terserOptions: {
+          mangle: true,
+          ie8: true,
+          safari10: true
+        }
       })
     ]
   }