@ocas/fs

Filesystem-backed CAS store.

Overview

@ocas/fs implements a persistent Store backed by node:sqlite (DatabaseSync). Nodes are stored as CBOR blobs in SQLite tables. Stores support bootstrap via the same BOOTSTRAP_STORE symbol as the in-memory implementation.

Depends on @ocas/core for hashing, CBOR encoding, and types.

Dependencies: @ocas/core, cborg

Installation

pnpm add @ocas/fs

API

Exported from src/index.ts:

function openStore(path: string): Promise<Store>;

Returns a unified Store with cas, var, and tag sub-stores, backed by SQLite. Bootstraps automatically on open.

Example

import { putSchema } from "@ocas/core";
import { openStore } from "@ocas/fs";

const store = await openStore("./my-cas-store");

const typeHash = await putSchema(store, {
  type: "object",
  properties: { id: { type: "string" } },
  required: ["id"],
  additionalProperties: false,
});

const hash = await store.put(typeHash, { id: "item-1" });
console.log(store.has(hash)); // true after restart if same dir

Internal Structure

| File | Purpose | |------|---------| | store.ts | createFsStore, load/save nodes and type index | | index.ts | Public export | | store.test.ts | Filesystem store tests |