@stll/folio-core

@stll/folio-core

The headless, framework-neutral core of folio: the OOXML (.docx) parser, the document model, the ProseMirror integration, and the page-layout engine. It opens a real .docx, models it, paginates it, and writes a real .docx back — preserving tables, headers and footers, tracked changes, and footnotes.

There is no React in the import graph, so the core runs on a server or under any framework. The React editor lives in @stll/folio-react, and the Vue editor lives in @stll/folio-vue.

Part of stella, an open-source legal workspace.

Install

bun add @stll/folio-core

Exports

Import	What it is
@stll/folio-core	the headless public API — createEmptyDocument, createDocx, the document model, AI-suggestion primitives, ProseMirror plugins
@stll/folio-core/markdown	DOCX ↔ Markdown conversion
@stll/folio-core/server	DOM-free helpers for server-side use (block-id derivation, document creation, re-zip)
@stll/folio-core/*	the source-mirrored module tree (e.g. @stll/folio-core/types/document, @stll/folio-core/prosemirror/schema) for adapters that need lower-level building blocks

New documents and reusable style sets

Create a legal-shaped blank document with the built-in preset:

import { createDocx, createEmptyDocument, createStellaStyleDocumentPreset } from "@stll/folio-core";

const document = createEmptyDocument({
  preset: createStellaStyleDocumentPreset(),
});
const docx = await createDocx(document);

Style sets are content-free JSON values. Inspect a source file before presenting styles for selection, extract the selected dependency closure, persist the result, and load it into any later document:

import {
  createEmptyDocument,
  extractDocumentStyleSetFromDocx,
  inspectDocumentStylesFromDocx,
} from "@stll/folio-core";

const catalog = await inspectDocumentStylesFromDocx(sourceDocx);
const styleSet = await extractDocumentStyleSetFromDocx(sourceDocx, {
  name: "Firm contract styles",
  styleIds: catalog.styles
    .filter(({ role }) => role === "default" || role === "quick")
    .map(({ styleId }) => styleId),
});

const document = createEmptyDocument({ styleSet });

Extraction excludes document content, metadata, relationships, media, comments, and revision data. It keeps only the selected styles and the numbering, theme, font-table, and settings data required to reproduce their formatting.

License

Apache-2.0

folio began as a private fork of Eigenpal's docx-editor; the original license and copyright are preserved in NOTICE.md.