in src/legacy_fixme/coercions.php [95:103]
function lt(mixed $l, mixed $r)[]: bool {
// avoid doing slow checks in super common case
if ($l is string && $r is string) {
return $l < $r;
} else if ($l is num && $r is num) {
return $l < $r;
}
return __cast_and_compare($l, $r, COMPARISON_TYPE::LT) === -1;
}