Merge pull request #189 from orangemug/feature/disable-polling-by-default

Disable polling by default

README.md

@@ -49,7 +49,12 @@ npm install
 npm start
 ```
 
-Build a production package for distribution.
+The build process will watch for changes to the filesystem, rebuild and autoreload the editor. However note this from the webpack-dev-server docs
+
+> webpack uses the file system to get notified of file changes. In some cases this does not work. For example, when using Network File System (NFS). Vagrant also has a lot of problems with this. 
+Snippet from <https://webpack.js.org/configuration/dev-server/#devserver-watchoptions->
+
+To enable polling add `export WEBPACK_DEV_SERVER_POLLING=1` to your enviroment.
 
 ```
 npm run build

config/webpack.config.js

@@ -41,7 +41,13 @@ module.exports = {
     // serve index.html in place of 404 responses to allow HTML5 history
     historyApiFallback: true,
     port: PORT,
-    host: HOST
+    host: HOST,
+    watchOptions: {
+      // Disabled polling by default as it causes lots of CPU usage and hence drains laptop batteries. To enable polling add WEBPACK_DEV_SERVER_POLLING to your environment
+      // See <https://webpack.js.org/configuration/watch/#watchoptions-poll> for details
+      poll: (!!process.env.WEBPACK_DEV_SERVER_POLLING ? true : false),
+      watch: false
+    }
   },
   plugins: [
     new webpack.NoErrorsPlugin(),

package.json

@@ -8,7 +8,7 @@
     "build": "webpack --config config/webpack.production.config.js --progress --profile --colors",
     "test": "wdio config/wdio.conf.js",
     "test-watch": "wdio config/wdio.conf.js --watch",
-    "start": "webpack-dev-server --progress --profile --colors --watch-poll --config config/webpack.config.js",
+    "start": "webpack-dev-server --progress --profile --colors --config config/webpack.config.js",
     "lint": "eslint --ext js --ext jsx {src,test}",
     "lint-styles": "stylelint 'src/styles/*.scss'"
   },