Update BrowserFS build deps. (codesandbox#1924)

Author: lbogdan

standalone-packages/codesandbox-browserfs/package.json

@@ -59,20 +59,19 @@
     "object-wrapper": "~1.0.1",
     "remap-istanbul": "~0.11.1",
     "rimraf": "~2.6.2",
-    "rollup": "~0.64.1",
-    "rollup-plugin-alias": "~1.4.0",
+    "rollup": "~1.12.1",
+    "rollup-plugin-alias": "~1.5.1",
     "rollup-plugin-buble": "~0.19.2",
     "rollup-plugin-inject": "~2.2",
-    "rollup-plugin-node-resolve": "~3.3.0",
+    "rollup-plugin-node-resolve": "~5.0.0",
     "rollup-plugin-sourcemaps": "~0.4.2",
-    "rollup-watch": "~4.3.1",
     "source-map-loader": "~0.2.3",
     "tslint": "~5.11.0",
     "typedoc": "~0.11.1",
     "typescript": "~3.0.1",
-    "webpack": "~4.16.5",
-    "webpack-cli": "~3.1.0",
-    "webpack-dev-server": "~3.1.5"
+    "webpack": "~4.31.0",
+    "webpack-cli": "~3.3.2",
+    "webpack-dev-server": "~3.3.1"
   },
   "scripts": {
     "lint:old": "tslint -c src/tslint.json --project src/tsconfig.json",
@@ -82,8 +81,8 @@
     "watch:scripts": "tsc -p scripts --watch",
     "build:rollup": "rollup -c src/rollup.config.js",
     "watch:rollup": "rollup -w -c src/rollup.config.js",
-    "build:webpack": "webpack --config src/webpack.config.js",
-    "watch:webpack": "webpack -w --config src/webpack.config.js",
+    "build:webpack": "webpack  --mode development --config src/webpack.config.js",
+    "watch:webpack": "webpack -w  --mode development --config src/webpack.config.js",
     "build:webpack-release": "webpack -p --config src/webpack.config.js",
     "watch:webpack-release": "webpack -w -p --config src/webpack.config.js",
     "build": "npm-run-all --parallel build:tsc build:scripts --sequential build:rollup --parallel build:webpack build:webpack-release",

standalone-packages/codesandbox-browserfs/src/rollup.config.js

@@ -25,8 +25,7 @@ export default {
       dropbox_bridge: join(outBase, 'ts', 'generic', 'dropbox_bridge_actual.js')
     }),
     nodeResolve({
-      main: true,
-      jsnext: true,
+      mainFields: ['main', 'jsnext:main'],
       preferBuiltins: true
     }),
     sourcemaps(),