type ElectorParams = {
    /**
     * The name of the channel to use for the `BroadcastChannel`.
     */
    channelName?: string;
    /**
     * Interval for sending heartbeats
     */
    heartbeatInterval?: number;
    /**
     * Timeout for considering a tab dead if we have received no hearbeat.
     */
    deathTimeout?: number;
};
type ElectorCallbacks = {
    /**
     * Function to be run when the current tab is elected the leader.
     */
    onLeaderElected: () => void;
    /**
     * Function to be run when the current tab is demoted from being the leader.
     */
    onLeaderDemoted: () => void;
};
type Elector = ReturnType<typeof elector>;
/**
 * Sets up elector selection mechanism.
 */
declare function elector({ onLeaderElected, onLeaderDemoted }?: ElectorCallbacks, { channelName, heartbeatInterval, deathTimeout, }?: ElectorParams): Readonly<{
    isLeader: () => boolean;
    getTabId: () => `${string}-${string}-${string}-${string}-${string}`;
    destroy: () => void;
}>;

export { type Elector, type ElectorCallbacks, type ElectorParams, elector };