import { AppTheme } from '@backstage/core-plugin-api';
/**
 * Creates an extension that adds/replaces an app theme.
 *
 * @public
 */
export declare const ThemeBlueprint: import("../wiring").ExtensionBlueprint<{
    kind: "theme";
    name: undefined;
    params: {
        theme: AppTheme;
    };
    output: import("../wiring").ConfigurableExtensionDataRef<AppTheme, "core.theme.theme", {}>;
    inputs: {};
    config: {};
    configInput: {};
    dataRefs: {
        theme: import("../wiring").ConfigurableExtensionDataRef<AppTheme, "core.theme.theme", {}>;
    };
}>;