my $json = JSON::XS->new();
$json->canonical;
+$json->allow_nonref(1);
my $i;
for( $i = 0; $i < @$tiers; $i++ ) {
$children_of{$key}->{''} = $tier->{empty_label};
}
}
+ # ensure that there's always at least one empty label
+ $children_of{''}->{''} = $tier->{empty_label};
}
$tier->{by_key} = \%children_of;
}