One cell model.
Browser, server, cloud.

import { createCellRuntime, DurableObject } from "@statewalker/cellb";
import { nodeSqliteOpener } from "@statewalker/cellb/node";

class Counter extends DurableObject {
  increment(): number {
    const sql = this.ctx.storage.sql;
    sql.exec("CREATE TABLE IF NOT EXISTS c (id INTEGER PRIMARY KEY, n INTEGER)");
    sql.exec("INSERT INTO c (id, n) VALUES (1, 1) ON CONFLICT(id) DO UPDATE SET n = n + 1");
    return sql.exec<{ n: number }>("SELECT n FROM c WHERE id = 1").one().n;
  }
}

const runtime = createCellRuntime({
  worker: {
    Counter,
    default: {
      fetch: async (req: Request, env: any) =>
        Response.json({ n: await env.COUNTER.getByName(new URL(req.url).pathname).increment() }),
    },
  },
  durableObjects: { COUNTER: { className: "Counter" } },
  openSql: nodeSqliteOpener("./data"),
});

await runtime.fetch(new Request("http://local/counter/a")); // {"n":1}

// in a Dedicated Worker
import sqlite3InitModule from "@sqlite.org/sqlite-wasm";
import { browserProjectRuntime } from "@statewalker/cellb/browser";

const host = await browserProjectRuntime({
  config,            // the parsed wrangler.jsonc
  code: { bundle },  // the project's main, bundled for browsers
  sqlite3: await sqlite3InitModule(),
  pool: "my-app",    // the OPFS SQLite pool of this worker
  filesDir: "my-app-files",
  // or keep each cell as celld does, LTX files in OPFS read page by page:
  // bucket: { ltx: "my-app-ltx", node: "tab" },
});

const res = await host.runtime.fetch(new Request("http://browser/"));

import { celldBucket, s3ObjectStore } from "@statewalker/cellb";
import { loadNodeProject, nodeSqliteOpener } from "@statewalker/cellb/node";

// The same wrangler project celld deploys, on the bucket celld nodes use.
const { runtime, unsupported } = await loadNodeProject("./counter", {
  openSql: nodeSqliteOpener(), // each cell is restored from the bucket on first use
  files,
  storage: celldBucket(s3ObjectStore({ endpoint, bucket, region, accessKeyId, secretAccessKey }), {
    node: "cellb-1",
  }),
});

await runtime.fetch(new Request("http://localhost/increment?name=a"));
await runtime.close(); // releases the cells, so celld can take them at once