import { HoistModel, Theme } from '@xh/hoist/core';
/**
 * @internal
 */
export declare class ThemeModel extends HoistModel {
    xhImpl: boolean;
    darkTheme: boolean;
    constructor();
    toggleTheme(): void;
    setDarkTheme(value: boolean): void;
    setTheme(value: Theme, persist?: boolean): void;
    init(): void;
    /**
     * Sync the `<meta name="theme-color">` tag to the active theme's app-bar color, creating it if
     * needed. This tints browser chrome to match the app - e.g. Android Chrome's status bar and task
     * switcher, and desktop installed PWAs. Hoist's theme is independent of the OS color scheme, so
     * the tag's content must be updated on each theme change rather than relying on the static
     * `media="(prefers-color-scheme)"` form. Note Safari 26+ ignores `theme-color`, instead deriving
     * its chrome color from the page background (see the companion `color-scheme` handling above).
     */
    private syncThemeColorMeta;
}