esnext-rails

esnext adapter for the Rails asset pipeline.

Add the esnext-rails to your Gemfile:

gem 'esnext-rails'

To have a JavaScript file compiled using esnext, append the .esn extension. For example:

// application.js.esn

class Point {
  constructor(x, y) {
    this.x = x;
    this.y = y;
  }
}

console.log(new Point(1, 2));

Requesting /assets/application.js will return the compiled version of this file.

$ bundle install
$ bundle exec rake test

If you need to test against local gems, use Bundler's gem :path option in the Gemfile.