import { MilkdownPlugin } from '@milkdown/kit/ctx';
/**
 * Inner variant block: `::::variant{default}` or `::::variant{channelId="…"}` (extensible keys).
 */
export declare const contentVariantNode: import('@milkdown/utils').$Node;
/**
 * Outer wrapper: `:::::variants` containing one or more variants.
 * Uses {@link TOP_LEVEL_BLOCK_GROUP} so it cannot nest inside `content_variant` (`block+`).
 */
export declare const variableContentNode: import('@milkdown/utils').$Node;
/**
 * Replaces Crepe/commonmark `doc` so top-level blocks (variable_content) remain insertable.
 * `$node` replaces by id — register after Crepe's preset is loaded.
 */
export declare const variableContentDocNode: import('@milkdown/utils').$Node;
/**
 * Schema plugins only — remark-directive is already registered by noticePlugin.
 * Doc override must be included so `topLevelBlock` is valid under the root.
 */
export declare const variableContentPlugin: MilkdownPlugin[];