@flowlinejs/storage-memory

An in-memory StorageAdapter for the @flowlinejs/engine: everything lives in a plain object in the current process. Values are deep-cloned with structuredClone on the way in and out, so callers can never mutate stored state. Use it for tests, examples and single-process prototypes — data does not persist across restarts and is not shared across processes; use @flowlinejs/storage-postgres when you need either.

Install

pnpm add @flowlinejs/storage-memory @flowlinejs/engine @flowlinejs/core zod@^4

zod 4 is a required peer dependency.

Usage

import { createEngine } from "@flowlinejs/engine";
import { createMemoryStorage } from "@flowlinejs/storage-memory";
import { createRegistry } from "@flowlinejs/core";

export const engine = createEngine({
  registry: createRegistry([]),
  storage: createMemoryStorage(),
  authorize: async () => ({ tenantId: "acme", userId: "u1" }),
});

See the root README for the full quick start and docs/ for the design spec.