some es6 features are not understood by grunt uglify js?

Question

I used grunt-uglify in my project and I\'m working with es6. for some es6 features, such as fat arrow function, it\'s throwing an error. I think the uglify don\'t understant

Answer 1

You can use the harmony branch of grunt-contrib-uglify.

npm install git://github.com/gruntjs/grunt-contrib-uglify.git#harmony --save-dev

works perfectly with es6. No additional settings for grunt are required.