*/ final class IssueCollection implements Countable, IteratorAggregate { /** * @var list */ private array $issues; /** * @no-named-arguments */ public function __construct(Issue ...$errors) { $this->issues = $errors; } /** * @psalm-suppress LessSpecificImplementedReturnType * @return Iterator, Issue> */ public function getIterator(): Iterator { return Iterator::create($this->issues); } public function count(): int { return count($this->issues); } /** * @param (callable(Issue): bool) $filter */ public function filter(callable $filter): self { return new self(...Dict\filter($this->issues, $filter(...))); } public function getHighestLevel(): ?Level { $issue = Math\max_by($this->issues, static fn (Issue $issue): int => $issue->level()->value()); return $issue ? $issue->level() : null; } public function toString(): string { $values = Vec\values(Dict\map($this->issues, static fn (Issue $error): string => $error->toString())); return Str\join($values, PHP_EOL); } }