Browserify, Babel 6, Gulp – Unexpected token on spread operator

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That syntax is an experimental proposed syntax for the future, it is not part of es2015 or react so you’ll need to enable it.

npm install --save-dev babel-plugin-transform-object-rest-spread

and add 

"plugins": ["transform-object-rest-spread"]

into .babelrc alongside your existing presets.

Alternatively:

npm install --save-dev babel-preset-stage-3

and use stage-3 in your presets to enable all stage-3 experimental functionality.

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