 					guard let enumerator = FileManager.default.enumerator(at: URL(fileURLWithPath: value), includingPropertiesForKeys: nil) else {
 						throw ProcessingError.fileNotFound(value)
 					}
+					var filePaths = [String]()
 					for file in enumerator {
 						let fileUrl = file as! URL
 						if outputs[outputs.count - 1].excludes.contains(fileUrl.path) {

							continue
						}
						if fileUrl.pathExtension != "swift" { continue }
						outputs[outputs.count - 1].includes.append(.file(fileUrl.path))
					}
				} else {
					outputs[outputs.count - 1].includes.append(.file(value))

			throw ProcessingError.cantCreateOutputFile(outputUrl.path)
		}
		let output = try FileHandle(forWritingTo: outputUrl)
		
		var preprocessed = [Include]()
		var files = [String]()
		for include in includes {
