{
  "repository": {
  },
  "dependencies": {
    "babel-brunch": "^6.0.0",
    "brunch": "^2.1.1",
    "clean-css-brunch": ">= 1.0 < 1.8",
    "css-brunch": ">= 1.0 < 1.8",
    "javascript-brunch": ">= 1.0 < 1.8",
    "uglify-js-brunch": ">= 1.0 < 1.8",
    "phoenix": "file:deps/phoenix",
    "phoenix_html": "file:deps/phoenix_html"
  }
}

{
  "repository": {
  },
  "dependencies": {
    "babel-brunch": "^6.0.0",
    "babel-preset-es2015": "^6.6.0",
    "brunch": "^2.1.1",
    "clean-css-brunch": ">= 1.0 < 1.8",
    "css-brunch": ">= 1.0 < 1.8",
    "javascript-brunch": ">= 1.0 < 1.8",
    "uglify-js-brunch": ">= 1.0 < 1.8",
    "phoenix": "file:deps/phoenix",
    "phoenix_html": "file:deps/phoenix_html"
  }
}

Add babel-preset-es2015 to node dependencides
Add babel-preset-es2015 to node dependencides