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

format.go

@@ -0,0 +1,27 @@
+package render
+
+import (
+	"io"
+)
+
+// FormatRenderer is a renderer that delegates rendering to another renderer
+// based on a format value.
+type FormatRenderer struct {
+	Renderers map[string]Renderer
+}
+
+// Render renders a value to an io.Writer using the specified format. If the
+// format is not supported, ErrCannotRender is returned.
+//
+// If the format is supported, but the value cannot be rendered to the format,
+// the error returned by the renderer is returned. In most cases this will be
+// ErrCannotRender, but it could be a different error if the renderer returns
+// one.
+func (r *FormatRenderer) Render(w io.Writer, format string, v any) error {
+	renderer, ok := r.Renderers[format]
+	if ok {
+		return renderer.Render(w, v)
+	}
+
+	return ErrCannotRender
+}