import { Ctx } from '@milkdown/kit/ctx';
/** Toolbar item shape expected by Crepe formatting group (icon, active, onRun). */
export type FormattingToolbarItem = {
    icon: string;
    active: (ctx: Ctx) => boolean;
    onRun: (ctx: Ctx) => void;
};
/**
 * Add heading (H1–H6) and list (bullet, ordered) toolbar items to the formatting group.
 * Call from Crepe Toolbar buildToolbar with the result of builder.getGroup('formatting').
 *
 * **Toolbar CSS coupling:** `theme/overrides.css` hides heading/list/grammar via
 * `data-toolbar-item` when the selection is in a table cell
 * (`data-bf-formatting-toolbar-table-cell` on `body`).
 */
export declare function addFormattingToolbarItems(formattingGroup: {
    addItem: (key: string, item: FormattingToolbarItem) => unknown;
}, options?: {
    highlight?: boolean;
}): void;