/**
 * Feedback mixin — loading/buffering spinner, toast messages, error lines.
 *
 * Owns: wireFeedback, showMessage, hideMessage.
 *
 * The `messageEl` and `messageTimer` fields live on the plugin class
 * (DesktopUiPlugin). This mixin reads and writes them via DesktopUiInternals.
 */
import type { DesktopUiInternals } from '../internals.js';
export declare const feedbackMethods: {
    readonly wireFeedback: (this: DesktopUiInternals) => void;
    readonly showMessage: (this: DesktopUiInternals, text: string, ms?: number, isFeedback?: boolean) => void;
    readonly hideMessage: (this: DesktopUiInternals) => void;
};