// GENERATED CONTENT - DO NOT EDIT
// Content was automatically extracted by Reffy into webref
// (https://github.com/w3c/webref)
// Source: Web Background Synchronization (https://wicg.github.io/background-sync/spec/)

partial interface ServiceWorkerRegistration {
  readonly attribute SyncManager sync;
};

[Exposed=(Window,Worker)]
interface SyncManager {
  Promise<undefined> register(DOMString tag);
  Promise<sequence<DOMString>> getTags();
};

partial interface ServiceWorkerGlobalScope {
  attribute EventHandler onsync;
};

[Exposed=ServiceWorker]
interface SyncEvent : ExtendableEvent {
  constructor(DOMString type, SyncEventInit init);
  readonly attribute DOMString tag;
  readonly attribute boolean lastChance;
};

dictionary SyncEventInit : ExtendableEventInit {
  required DOMString tag;
  boolean lastChance = false;
};