import type { Tab } from '@kui-shell/core';
import type { Channel } from './channel';
/** Has the electron app already begun to terminate? */
export declare function isExiting(): boolean;
export declare function invalidateCache(tab: Tab): void;
/**
 * Return the session for the given tab
 *
 */
export declare function getSessionForTab(tab: Tab): Promise<Channel>;
/**
 * Set it
 *
 */
export declare function setChannelForTab(tab: Tab, channel: Promise<Channel>): Promise<Channel>;