Can Not add Links for Other options instead of "JavaScript"

[0xC0ba1t]

Hi,
When I create a new widget for example: "DatavisualizationLinks"
It wil not work saying that the last closed curly bracket: This one: "};" it will give a error saying I should remove the semicolon and change to a comma.
If I change the semicolon to the comma it will say "Unexpected token "export" "
I mean why?
Any Help will be appreciated as I need to publish this publicly.
Thanks,
Aditya.