Blueprint books

List and select nested blueprints from a book string.

import { decode, listBlueprints, selectBlueprint } from "@rickyzhangca/fpsr";

const doc = decode(bookString);
const refs = listBlueprints(doc); // flattened tree with paths

const bp = selectBlueprint(doc, [0, 2]); // third child of first entry

selectBlueprint(doc) without a path follows the book’s active_index chain.

When calling createRenderer(...).render(doc), pass blueprintPath to render a nested book entry instead of the active chain.