export type ThemePreference = "light" | "dark" | "system";
export type ResolvedTheme = "light" | "dark";
export declare const EMBEDDED_THEME_UPDATE_MESSAGE = "agent-native-theme-update";
export declare const EMBEDDED_THEME_CHANGE_EVENT = "agent-native:theme-change";
export interface EmbeddedThemeUpdate {
    type: typeof EMBEDDED_THEME_UPDATE_MESSAGE;
    theme?: ResolvedTheme;
    isDark?: boolean;
    vars?: Record<string, string>;
}
export interface NormalizedEmbeddedThemeUpdate {
    theme: ResolvedTheme;
    vars?: Record<string, string>;
}
export declare function parseEmbeddedThemeUpdate(value: unknown): NormalizedEmbeddedThemeUpdate | null;
export declare function buildEmbeddedThemeUpdate(theme: ResolvedTheme, vars?: Record<string, string>): EmbeddedThemeUpdate;
export declare function applyEmbeddedThemeUpdate(root: HTMLElement, update: NormalizedEmbeddedThemeUpdate): void;
export declare function getThemeInitScript(defaultTheme?: ThemePreference, enableSystem?: boolean, appId?: string): string;
export declare const themeInitScript: string;