ii  gir1.2-javascriptcoregtk-4.0:amd64          2.14.5-0ubuntu0.16.04.1                       amd64        JavaScript engine library from WebKitGTK+ - GObject introspection data
rc  javascript-common                           11                                            all          Base support for JavaScript library packages
ii  libjavascriptcoregtk-4.0-18:amd64           2.14.5-0ubuntu0.16.04.1                       amd64        JavaScript engine library from WebKitGTK+