Extensions: exception/option for global imports

[QuentinRoy]

Enhancement proposal: global case for extensions.

I think it is starting to be good practice to alway specify the extension of a file, i.e. "import/extensions": ["error", "always"] as this will be required with browsers' module loaders.

However, this causes issues when using with webpack or others and importing libraries installed in the node_modules (e.g. import 'react') that cannot have the '.js' extension.

It would be useful to be able to create a case for global imports, e.g. [<enabled>, "alway", { "globals": "never" }].

[ljharb]

When you say "global", do you mean bare specifiers, i.e. things in node_modules? If so this might be a duplicate of #414.

[QuentinRoy]

Oops. Indeed I missed this issue. Thanks.