/**
 * Run one operation exclusively across every browser context on the origin.
 * Non-browser runtimes use a module-wide queue, which coordinates every
 * caller in the process.
 */
export declare function runWithCrossContextLock<T>(name: string, operation: () => Promise<T>): Promise<T>;
/**
 * Serialize operations sharing one key through a pending-completion map: each
 * operation chains behind the key's tail, failures never poison the queue,
 * and the tail entry removes itself once no successor has replaced it.
 */
export declare function runSerializedByKey<T>(pending: Map<string, Promise<void>>, key: string, operation: () => Promise<T>): Promise<T>;
//# sourceMappingURL=cross-context-lock.d.ts.map