import { LeafIndex, NodeIndex } from './merkletree';
/**
 * Is the given leaf a right child or left child of its parent node.
 *
 * Leaves are added in order, so this is the same as asking if the index
 * is an od number
 */
export declare function isRight(index: LeafIndex): boolean;
/**
 * Is the given node index the empty node above the root node?
 */
export declare function isEmpty(index: NodeIndex | undefined): index is undefined | 0;
/**
 * The depth of the tree when it contains a certain number of leaf nodes
 */
export declare function depthAtLeafCount(size: number): number;
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