public function __construct()

in src/Invoker.php [41:76]
34 lines of code
6 McCabe index (conditional complexity)

    public function __construct($target, ?string $signatureType = null)
    {
        if (is_string($target) && isset(self::$registeredFunctions[$target])) {
            $this->function = self::$registeredFunctions[$target];
        } else {
            if (!is_callable($target)) {
                throw new InvalidArgumentException(sprintf(
                    'Function target is not callable: "%s"',
                    $target
                ));
            }

            if ($signatureType === 'http') {
                $this->function = new HttpFunctionWrapper($target);
            } elseif (
                $signatureType === 'event'
                || $signatureType === 'cloudevent'
            ) {
                $this->function = new CloudEventFunctionWrapper($target, false);
            } elseif ($signatureType === 'typed') {
                $this->function = new TypedFunctionWrapper($target);
            } else {
                throw new InvalidArgumentException(sprintf(
                    'Invalid signature type: "%s"',
                    $signatureType
                ));
            }
        }

        $this->errorLogFunc = function (string $error) {
            fwrite(fopen('php://stderr', 'wb'), json_encode([
                'message' => $error,
                'severity' => 'error'
            ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));
        };
    }