// https://w3c.github.io/web-locks/#lockmanager
[SecureContext, Exposed=(Window,Worker)]
interface LockManager {
    Promise<any> request(DOMString name, LockGrantedCallback callback);
    Promise<any> request(DOMString name, LockOptions options, LockGrantedCallback callback);

    Promise<LockManagerSnapshot> query();
};

callback LockGrantedCallback = Promise<any> (Lock? lock);

enum LockMode { "shared", "exclusive" };

dictionary LockOptions {
    LockMode mode = "exclusive";
    boolean ifAvailable = false;
    boolean steal = false;
    AbortSignal signal;
};

dictionary LockManagerSnapshot {
    sequence<LockInfo> held;
    sequence<LockInfo> pending;
};

dictionary LockInfo {
    DOMString name;
    LockMode mode;
    DOMString clientId;
};