Simple feedback server

feedback-server/externs/global/TestStderr.hx

@@ -0,0 +1,13 @@
+package global;
+
+typedef TestStderr = {
+	/**
+		The path of the test file, undefined if test is not ran through a file.
+	**/
+	@:optional
+	var file : String;
+	/**
+		The message written to `stderr`
+	**/
+	var message : String;
+};