items) ? $this->items[0] : 'default'; } } CODE_SAMPLE , <<<'CODE_SAMPLE' final class SomeClass { private array $items = []; public function run() { return $this->items[0] ?? 'default'; } } CODE_SAMPLE )]); } /** * @return array> */ public function getNodeTypes() : array { return [Ternary::class]; } /** * @param Ternary $node */ public function refactor(Node $node) : ?Node { if (!$node->cond instanceof BooleanNot) { return null; } $negagedExpr = $node->cond->expr; if (!$negagedExpr instanceof Empty_) { return null; } if (!$node->if instanceof ArrayDimFetch) { return null; } $emptyExprType = $this->getType($negagedExpr->expr); if (!$emptyExprType->isArray()->yes()) { return null; } $dimFetchVar = $node->if->var; if (!$this->nodeComparator->areNodesEqual($negagedExpr->expr, $dimFetchVar)) { return null; } return new Coalesce($node->if, $node->else); } }