const behaviorItemRegistry = new Map();

export function fromJSON({type, ...json}) {
  const Class = behaviorItemRegistry.get(type);
  if (!Class) {
    throw new TypeError(`There is no class for the behavior item "${type}"`);
  }
  return (new Class()).fromJSON(json);
}

export function deregister(BehaviorItem) {
  behaviorItemRegistry.delete(BehaviorItem.type());
}

export function register(BehaviorItem) {
  if (!BehaviorItem.type) {
    BehaviorItem.type = function() {
      return BehaviorItem.name.toLowerCase();
    }
  }
  behaviorItemRegistry.set(BehaviorItem.type(), BehaviorItem);
}