react.raku

use Cro::HTTP::Client;

my $c;
react {
    whenever Cro::HTTP::Client.get("http://cannibal.local") -> $v {
        whenever $v.body-text -> $m {
            $c = $m;
            done;
        }
    }
}
say $c;

# vim: ft=raku

supply.raku

use Cro::HTTP::Client;

my $c = await (supply {
    whenever Cro::HTTP::Client.get("http://cannibal.local") -> $v {
        whenever $v.body-text -> $m {
            emit $m;
            done;
        }
    }
}).Promise;
say $c;

# vim: ft=raku

then.raku

use Cro::HTTP::Client;

my $c = await Cro::HTTP::Client.get("http://cannibal.local").then( { $_.result.body-text }).then({ $_.result.result });
say $c;

# vim: ft=raku