Move error-reporter to imports section

lib/node-application.nix

@@ -4,6 +4,7 @@
 
 		let
 			buildNode2nixPackage = (import ./build/node2nix-package.nix) args;
+			errorReporter = (import ./node-error-reporter) args;
 		in let
 			serviceName = "node-${name}";
 			cfg = config.services."${serviceName}";
@@ -13,7 +14,6 @@
 				inherit src setupCommands;
 			};
 
-			errorReporter = (import ./node-error-reporter) args;
 			errorReporterModule = if hasErrorReporting then (errorReporter {
 				application = application;
 				applicationName = name;