import { type Theme } from "../theme.js";
export interface ThemeSwitcherOptions {
    initial?: Theme;
    /** Called whenever the user selects a theme. */
    onChange: (theme: Theme, resolved: "light" | "dark" | "neon") => void;
    /** If true, persists the selection to localStorage under "bpmnkit-theme". */
    persist?: boolean;
}
/**
 * Creates a theme-switcher button that opens a Dark / Light / System dropdown.
 * The button icon updates to reflect the current selection.
 */
export declare function createThemeSwitcher(options: ThemeSwitcherOptions): {
    el: HTMLElement;
    setTheme(t: Theme): void;
};
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