I see the `let` statement is new in 1.7. I was going to look up what version the latest Safari supports, but that turns out to be a hard question to answer. Weird. Anyway, Safari doesn't seem to quite work with this patch; search results are always delivered in JSON format. It might be something minor.

However, browser support is something you and I should chat about and figure out. You did all that user research awhile back and probably have some good opinions. I'd like to support reasonably new versions of all the majors, but I'm open to making an exception or two if there's something really worthwhile to gain.