Fixes the failing CI master build (#2697)

.circleci/config.yml

@@ -203,7 +203,7 @@ jobs:
           paths: [~/.cache/yarn, node_modules]
       - run: yarn test
       - run: ./node_modules/.bin/codecov -p ..
-      - run: yarn build
+      - run: NODE_ENV='production' yarn build
       - run: yarn lint
 workflows:
   version: 2

ui/.babelrc

@@ -0,0 +1,6 @@
+{
+  "presets": [
+    "@babel/preset-env",
+    "@babel/preset-react"
+  ]
+}

ui/.gitignore

@@ -2,4 +2,5 @@ node_modules
 dist
 .vscode
 junit.xml
-coverage
+coverage
+/yarn-error.log

ui/package.json

@@ -73,7 +73,7 @@
     "tslint-react": "^3.4.0",
     "typescript": "^3.4.5",
     "unidiff": "^1.0.2",
-    "webpack": "^4.29.5",
+    "webpack": "^4.41.2",
     "webpack-cli": "^3.2.3",
     "webpack-dev-server": "^3.2.1"
   },
@@ -82,15 +82,15 @@
     "@types/react-dom": "16.8.2"
   },
   "devDependencies": {
-    "@babel/core": "^7.0.0-0",
+    "@babel/core": "^7.7.2",
     "@babel/preset-env": "^7.7.1",
     "@babel/preset-react": "^7.7.0",
     "@babel/preset-typescript": "^7.7.2",
     "@types/jest": "^24.0.13",
     "@types/react-test-renderer": "^16.8.3",
     "add": "^2.0.6",
     "babel-jest": "^24.9.0",
-    "babel-preset-env": "^1.7.0",
+    "babel-loader": "^8.0.6",
     "codecov": "^3.6.1",
     "identity-obj-proxy": "^3.0.0",
     "jest": "^24.9.0",

ui/src/app/webpack.config.js

@@ -39,7 +39,7 @@ const config = {
                     /node_modules\/monaco-editor/,
                 ],
                 test: /\.js$/,
-                loaders: [ ...( isProd ? ['babel-loader?presets=babel-preset-env'] : []), 'source-map-loader']
+                loaders: [...(isProd ? ['babel-loader'] : []), 'source-map-loader'],
             }, {
                 test: /\.scss$/,
                 loader: 'style-loader!raw-loader!sass-loader'