Webstorm support for Node.js --harmony mode Permanently deleted user Created December 30, 2016 21:02 Is there any way to enable --harmony mode for Node.js in Webstorm?
You can pss this flag to Node.js in Node.js run configuration.
To enable ES6 syntax highlighting in WebStorm, make sure to set JavaScript Language version to ECMAScript 6 in Settings | Languages & Frameworks | JavaScript