Install fancyapps Fancybox, module parse failed 'unexpected token'

[strarsis]

Is this related (also Sage 9.x):

UglifyJs error on production build

I was able to resolve this issue by commenting out //exclude: [/node_modules(?)/], in resources/assets/build/webpack.config.js as recommended in some GitHub discussions (https://github.com/JeffreyWay/laravel-mix/issues/790#issuecomment-371511832).