pre migrate

internal/runtime/options.go

@@ -0,0 +1,17 @@
+package runtime
+
+import "io"
+
+type RuntimeOption func(*Runtime)
+
+func WithStdout(stdout io.Writer) RuntimeOption {
+	return func(r *Runtime) {
+		r.stdout = stdout
+	}
+}
+
+func WithStderr(stderr io.Writer) RuntimeOption {
+	return func(r *Runtime) {
+		r.stderr = stderr
+	}
+}