let synchronizedId = 0;
const synchronizedToIdMap = new Map();
const idToSynchronizedMap = new Map();
export function allSynchronizeds() {
  return Array.from(idToSynchronizedMap.values());
}
export function idFromSynchronized(Synchronized) {
  return synchronizedToIdMap.get(Synchronized);
}
export function synchronizedFromId(id) {
  return idToSynchronizedMap.get(id);
}
export function registerSynchronized(Synchronized) {
  if (synchronizedToIdMap.has(Synchronized)) {
    return;
  }
  const id = synchronizedId++;
  synchronizedToIdMap.set(Synchronized, id);
  idToSynchronizedMap.set(id, Synchronized);
  return id;
}