webpack literally breaks paper.js when it minifies

components/Graphic.jsx

@@ -39,7 +39,7 @@ var baseClass = {
     this.ctx.scale(dpr, dpr);
 
     if (this.props.paperjs) {
-      var Paper = this.Paper = require("../lib/vendor/paperjs/paper-core");
+      var Paper = this.Paper = require("paper/dist/paper-core");
       Paper.setup(cvs);
     }
 

package.json

@@ -50,8 +50,6 @@
   "devDependencies": {
     "babel-core": "^6.3.17",
     "babel-loader": "^7.1.4",
-    "babel-minify": "^0.4.3",
-    "babel-minify-webpack-plugin": "^0.3.1",
     "babel-preset-es2015": "^6.3.13",
     "babel-preset-react": "^6.3.13",
     "babel-register": "^6.4.3",
@@ -82,6 +80,7 @@
     "marked": "^0.3.6",
     "mathjs": "^5.0.0",
     "npm-run-all": "^4.0.1",
+    "paper": "^0.11.5",
     "pdfjs": "^1.0.0-alpha.5",
     "pirates": "^2.1.0",
     "preact": "^8.1.0",
@@ -98,8 +97,12 @@
     "shx": "^0.2.2",
     "style-loader": "^0.13.0",
     "svgo": "^0.6.6",
+    "uglify-js": "^3.4.1",
     "webpack": "^4.12.0",
     "webpack-cli": "^3.0.8",
     "webpack-serve": "^1.0.4"
+  },
+  "dependencies": {
+    "babel-minify": "^0.4.3"
   }
 }

webpack.config.js

@@ -53,6 +53,9 @@ module.exports = {
   entry:  entry,
   output: output,
   resolve: resolve,
+  optimization: {
+     minimize: false
+  },
   module: {
     rules: [
       {