import { TEditor, Value } from "../editor/TEditor";
import { ElementOf, TElement } from "../element/TElement";
import { TextOf, TText } from "../text/TText";
import { TNode } from "./TNode";
/**
 * The `Descendant` union type represents nodes that are descendants in the
 * tree. It is returned as a convenience in certain cases to narrow a value
 * further than the more generic `Node` union.
 */
export type TDescendant = TElement | TText;
/**
 * Descendant of an editor.
 */
export type EDescendant<V extends Value> = DescendantOf<TEditor<V>>;
/**
 * A utility type to get all the descendant node types from a root node type.
 */
export type DescendantOf<N extends TNode> = N extends TEditor ? ElementOf<N> | TextOf<N> : N extends TElement ? ElementOf<N["children"][number]> | TextOf<N> : never;
/**
 * A utility type to get the child node types from a root node type.
 */
export type ChildOf<N extends TNode, I extends number = number> = N extends TEditor ? N["children"][I] : N extends TElement ? N["children"][I] : never;
export declare const isDescendant: (value: any) => value is TDescendant;
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