mobx-bonsai/src/node/tree/getRoot.ts

A fast lightweight alternative to MobX-State-Tree + Y.js two-way binding

import { getRootPath } from "./getRootPath"

/**
 * Returns the root node, this is, will follow the tree up to the node with no parent and will return it.
 *
 * Note that this function will throw if the passed object is not a node.
 *
 * @template TRoot Root object type.
 * @param node Node to get the root from.
 * @returns Root object.
 */
export function getRoot<TRoot extends object>(node: object): TRoot {
  return getRootPath(node).root as TRoot
}