Re: [ServiceWorker] Support module service workers, and update for ES6 (#831)

I think I've got some concerns with the general design of @domenic's module workers proposal. I guess we can push the "type" thing through in a bunch of places as a one-off, but I'd like to have @mkruisselbrink's view on how this will work with header-based registration for foreign fetch.

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https://github.com/slightlyoff/ServiceWorker/issues/831#issuecomment-185998876