React-modal: react-scripts build failure during UglifyJs due to functions declaration syntax

[fabien-somnier]

Summary:

react-scripts build failure on projects, due to 2 syntax "errors":

• SyntaxError: Unexpected token punc «(», expected punc «:» [./~/react-modal/lib/components/Modal.js:103,0]
• SyntaxError: Unexpected token punc «(», expected punc «:» [./~/react-modal/lib/components/ModalPortal.js:80,0]

Steps to reproduce:

1. Have a project using react-modal dependency
2. Launch the production package command npm run build

Expected behavior:

Just want the package command to be successful.

Additional notes:

The reason of this error is simple, it's due to the used syntax for functions declaration:

• not working: removePortal () { and open () {
• working: removePortal: function () { and open: function () {

[AndrewGrachov]

confirming

[diasbruno]

Please, follow #336.

[fabien-somnier]

thanks for the other issue link ;)