Expand description
submilli:url — percent-encoding, query-string codecs, URL parse/build.
Pure Rust host functions registered directly under the package name. URL
values are host-built $UrlBacking structs — a host-only $Object subtype
the guest holds opaquely and reads through the registered property getters.
Query maps are real prelude Map<string, string>s, built and consumed
host-side.