/** @since 6.0.0 */
export interface ExpansionPanelClassNameOptions {
    className?: string;
    /**
     * @defaultValue `false`
     */
    expanded?: boolean;
    /**
     * Set this to `true` to disable the `margin-top` transition between multiple
     * panels
     *
     * @defaultValue `false`
     */
    disableTransition?: boolean;
}
/**
 * @since 6.0.0
 */
export declare function expansionPanel(options?: ExpansionPanelClassNameOptions): string;
/**
 * @since 6.0.0
 */
export interface ExpansionPanelHeadingClassNameOptions {
    className?: string;
}
/**
 * @since 6.0.0
 */
export declare function expansionPanelHeading(options?: ExpansionPanelHeadingClassNameOptions): string;
/**
 * @since 6.0.0
 */
export interface ExpansionPanelButtonClassNameOptions {
    className?: string;
}
/**
 * @since 6.0.0
 */
export declare function expansionPanelButton(options?: ExpansionPanelButtonClassNameOptions): string;
