Using Surface to convert objects into Map

MapConverter.scala

import wvlet.surface
import wvlet.surface.Surface

import scala.reflect.runtime.{universe => ru}

class MapConverter[A](surface: Surface) {
  def toMap(a: A): Map[String, Any] = {
    val m = Map.newBuilder[String, Any]
    for (p <- surface.params) {
      m += (p.name -> p.get(a))
    }
    m.result()
  }
}

object MapConverter {
  def of[A: ru.TypeTag]: MapConverter[A] = new MapConverter(surface.of[A])

  def toMap[A: ru.TypeTag](a: A): Map[String, Any] = {
    MapConverter.of[A].toMap(a)
  }
}