getRelations.ts

export type RelationDepth = {
  [key: string]: RelationDepth;
};

export function getRelations(depth: RelationDepth = {}) {
  const relations: string[] = [];
  const recurse = (obj: RelationDepth, path = '') => {
    Object.keys(obj).forEach((key) => {
      relations.push(path + key);
      recurse(obj[key], path + key + '.');
    });
  };
  recurse(depth);
  return relations;
}