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In the basic fetch section for http/https, the spec says: "If request's referrer is not null ..." Should that be `null` or do you mean as in missing? I found that bit a little bit confusing.
As in not having a value. We typically use null for that.
Yeah, it can get a bit confusing because some things actually use the byte string `null` (like Origin). If you think it's ok, then please close.
When we think of something better, we'll improve it. We might actually end up requiring referrer to be supplied always in due course I think.