feat(render): experimental package to render arbitrary values to different formats

writer_to.go

@@ -0,0 +1,28 @@
+package render
+
+import (
+	"fmt"
+	"io"
+)
+
+// WriterTo is a renderer that renders a value to an io.Writer using the
+// WriteTo method.
+type WriterTo struct{}
+
+var _ Renderer = (*WriterTo)(nil)
+
+// Render renders a value to an io.Writer using the WriteTo method. If the value
+// does not implement io.WriterTo, ErrCannotRender is returned.
+func (wt *WriterTo) Render(w io.Writer, v any) error {
+	x, ok := v.(io.WriterTo)
+	if !ok {
+		return ErrCannotRender
+	}
+
+	_, err := x.WriteTo(w)
+	if err != nil {
+		return fmt.Errorf("%w: %w", Err, err)
+	}
+
+	return nil
+}