element-book/dist/data/book-tree/tree-cache.js

An [`element-vir`](https://npmjs.com/package/element-vir) drop-in element for building, testing, and demonstrating a collection of elements (or, in other words, a design system).

import { getOrSetFromMap } from '@augment-vir/common';
const treeCache = new Map();
export function getTreeFromCache(entries) {
    return treeCache.get(entries);
}
export function addTreeToCache(entries, tree) {
    getOrSetFromMap(treeCache, entries, () => tree);
}