import { Node as ProseMirrorNode, ResolvedPos, Schema } from '@milkdown/kit/prose/model';
import { EditorView } from '@milkdown/kit/prose/view';
import { VariableContentChannel } from './config';
type MdastDirectiveLike = {
    type?: string;
    name?: string;
    children?: MdastDirectiveLike[];
};
/**
 * Hoist nested `:::::variants` / `::::variant` bodies into the parent variant.
 * Keeps parse from trying to create `variable_content` inside `content_variant`.
 */
export declare function flattenVariantMarkdownChildren<T extends MdastDirectiveLike>(children: T[] | undefined): T[];
type ChannelSelectOption = {
    label: string;
    value: string;
};
export declare function findAncestorVariableContent($pos: ResolvedPos): {
    depth: number;
    node: ProseMirrorNode;
} | null;
/**
 * Pick the visible variant for a variable_content block when `selectedChannelId` is set.
 * Exact channel match wins; otherwise falls back to the default variant.
 */
export declare function resolveChannelValueForVariableContent(variableContent: ProseMirrorNode, selectedChannelId: string): string | null;
/** Channel values already taken by sibling variants at `variantPos`. */
export declare function getSiblingChannelValues(view: EditorView, variantPos: number): Set<string>;
/** Next unused channel select value, or `null` when default + all channels are taken. */
export declare function nextAvailableChannelValue(channels: Array<{
    id: string;
}>, used: Set<string>): string | null;
export declare function canAddChannelVariant(channels: Array<{
    id: string;
}>, variableContent: ProseMirrorNode): boolean;
/** Outer `variable_content` with a single default variant. */
export declare function createVariableContentBlock(schema: Schema): ProseMirrorNode | null;
/** Dropdown options: Default + channels, minus siblings' values; always keep current. */
export declare function buildChannelSelectOptions(channels: VariableContentChannel[], currentValue: string, usedBySiblings: Set<string>): ChannelSelectOption[];
/** Delete this variant, or the whole variable_content when it is the last child. */
export declare function deleteContentVariantAt(view: EditorView, variantPos: number): boolean;
/**
 * Place the cursor in a content_variant body and focus the editor.
 * Call after any path that inserts a variant (Plus, slash, etc.).
 */
export declare function selectAndFocusContentVariantBody(view: EditorView, variantPos: number): boolean;
/** Append the next unused channel variant at the end of a variable_content block. */
export declare function appendContentVariantAt(view: EditorView, variableContentPos: number, channels: Array<{
    id: string;
}>): boolean;
export {};