Consider using https://github.com/babel/babel-preset-env

[ice-phoenix]

Original report by Kirill Gagarski (Bitbucket: gagarski, GitHub: gagarski).

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[ERROR] warning [email protected]: We're really excited that you're trying to use ES2017 syntax, but instead of making more yearly presets, Babel has a better preset that we recommend you use instead: npm install babel-preset-env --save-dev. Give us a follow @babeljs to get more updates
[ERROR] warning [email protected]: We're really excited that you're trying to use ES2016 syntax, but instead of making more yearly presets, Babel has a better preset that we recommend you use instead: npm install babel-preset-env --save-dev. Give us a follow @babeljs to get more updates
[ERROR] warning There appears to be trouble with your network connection. Retrying...