[Apollo] propertyAccess

propertyAccess.ts

function propertyAccess(object, key) {
  if (isFunction(object[key])) return object[key]();

  if (object[key] instanceof Date) return object[key].toISOString();

  if (key in object) return object[key];

  const conn = getConnection();

  if (conn.hasMetadata(object.constructor.name)) {
    const rel = conn
      .getMetadata(object.constructor.name)
      .findRelationWithPropertyPath(key);

    if (rel) {
      if (rel.isManyToOne || rel.isOneToOne) {
        return conn
          .createQueryBuilder()
          .relation(object.constructor.name, key)
          .of(object)
          .loadOne();
      } else {
        return conn
          .createQueryBuilder()
          .relation(object.constructor.name, key)
          .of(object)
          .loadMany();
      }
    }
  }

  return null;
}