parseUnaryExpression example

    protected function parseLogicalBinaryExpression()
    {
        $operators = $this->logicalBinaryOperators;
        if (!$this->context->allowIn) {
            unset($operators["in"]);
        }
        
        if (!($exp = $this->parseUnaryExpression())) {
            if (
                !$this->features->classFieldsPrivateIn ||
                !$this->context->allowIn
            ) {
                return null;
            }
            //Support "#private in x" syntax             $state = $this->scanner->getState();
            if (
                !($exp = $this->parsePrivateIdentifier()) ||
                !$this->scanner->isBefore(array("in"))
            )