import type { PushDeviceContext, PushDeviceIdentifier } from "@sublay/core";
/**
 * The web implementation of `PushTokenAdapter.subscribeToIdentifierChanges`.
 *
 * Runs one comparison pass and returns a canceller — there is no ongoing
 * listener to tear down, only an in-flight check to abandon if the component
 * unmounts first.
 */
export declare function subscribeToWebPushIdentifierChanges(_context: PushDeviceContext, onChange: (identifier: PushDeviceIdentifier | null) => void): () => void;