Add optional callback to SerialPort.list

types/serialport/index.d.ts

@@ -40,7 +40,7 @@ declare class SerialPort extends Stream.Duplex {
 
 	static Binding: SerialPort.BaseBinding;
 
-	static list(): Promise<any>;
+	static list(callback?: SerialPort.ListCallback): Promise<any>;
 }
 
 declare namespace SerialPort {

types/serialport/serialport-tests.ts

@@ -126,3 +126,14 @@ function test_properties() {
     const isOpen: boolean = port.isOpen;
     const path: string = port.path;
 }
+
+function test_list_ports_promise() {
+    const ports = SerialPort
+        .list()
+        .then((ports: any) => {})
+        .catch((err: Error) => {});
+}
+
+function test_list_ports_callback() {
+    const ports = SerialPort.list((error: Error, port: any[]) => {});
+}