import type { Promisable } from '../typeFest';
export interface AdminModeCfg {
    /**
     * Function (predicate) to detect if needed keys are pressed.
     *
     * @example
     * predicate: e => e.ctrlKey && e.key === 'L'
     *
     * @default
     * Detects Ctrl+Shift+L
     */
    predicate?: (e: KeyboardEvent) => boolean;
    /**
     * Called when RedDot is clicked. Implies that AdminMode is enabled.
     */
    onRedDotClick?: () => any;
    /**
     * Called when AdminMode was changed.
     */
    onChange?: (adminMode: boolean) => any;
    /**
     * Called BEFORE entering AdminMode.
     * Serves as a predicate that can cancel entering AdminMode if false is returned.
     * Return true to allow.
     * Function is awaited before proceeding.
     */
    beforeEnter?: () => Promisable<boolean>;
    /**
     * Called BEFORE exiting AdminMode.
     * Serves as a predicate that can cancel exiting AdminMode if false is returned.
     * Return true to allow.
     * Function is awaited before proceeding.
     */
    beforeExit?: () => Promisable<boolean>;
    /**
     * @default true
     * If true - it will "persist" the adminMode state in LocalStorage
     */
    persistToLocalStorage?: boolean;
    /**
     * The key for LocalStorage persistence.
     *
     * @default '__adminMode__'
     */
    localStorageKey?: string;
}
/**
 * @experimental
 *
 * Allows to listen for AdminMode keypress combination (Ctrl+Shift+L by default) to toggle AdminMode,
 * indicated by RedDot DOM element.
 *
 * todo: help with Authentication
 */
export declare class AdminService {
    constructor(cfg?: AdminModeCfg);
    cfg: Required<AdminModeCfg>;
    adminMode: boolean;
    private listening;
    /**
     * Start listening to keyboard events to toggle AdminMode when detected.
     */
    startListening(): void;
    stopListening(): void;
    private keydownListener;
    toggleRedDot(): Promise<void>;
    private toggleRedDotVisibility;
    private getRedDotElement;
}