update packages in package.json for webpack4

client/package.json

@@ -2,11 +2,14 @@
   "name": "cellxgene",
   "version": "0.0.1",
   "license": "MIT",
-  "description": "cellxgene is a web application for the interactive exploration of single cell sequence data.",
+  "description":
+    "cellxgene is a web application for the interactive exploration of single cell sequence data.",
   "repository": "https://github.com/chanzuckerberg/cellxgene",
   "scripts": {
-    "build": "npm run clean && webpack --config configuration/webpack/webpack.config.prod.js",
-    "dev": "npm run clean && webpack --config configuration/webpack/webpack.config.dev.js",
+    "build":
+      "npm run clean && webpack --config configuration/webpack/webpack.config.prod.js",
+    "dev":
+      "npm run clean && webpack --config configuration/webpack/webpack.config.dev.js",
     "clean": "rimraf build",
     "start": "node server/development.js",
     "lint": "eslint src",
@@ -54,6 +57,7 @@
     "scroll-speed": "^1.0.0",
     "serve-favicon": "^2.3.0",
     "urijs": "^1.19.0",
+    "webpack": "^4.16.0",
     "whatwg-fetch": "^2.0.3"
   },
   "devDependencies": {
@@ -72,11 +76,12 @@
     "babel-preset-stage-0": "^6.5.0",
     "babel-register": "^6.11.6",
     "babel-runtime": "^6.11.6",
+    "buffer-shims": "^1.0.0",
     "chalk": "^1.1.3",
     "connect-history-api-fallback": "^1.3.0",
     "copy-webpack-plugin": "^4.0.1",
     "cross-env": "^3.1.4",
-    "css-loader": "^0.26.1",
+    "css-loader": "^1.0.0",
     "css-modules-require-hook": "^4.0.1",
     "enzyme": "^3.3.0",
     "eslint": "^4.18.2",
@@ -105,7 +110,7 @@
     "sw-precache-webpack-plugin": "^0.7.1",
     "url-loader": "^0.6.0",
     "web-app-manifest-loader": "^0.1.1",
-    "webpack": "^2.2.0-rc.4",
+    "webpack": "^4.16.0",
     "webpack-dev-middleware": "^1.6.1",
     "webpack-hot-middleware": "^2.22.3"
   },