Getting started

Install

pnpm add effect-cqrs effect

npm install effect-cqrs effect

yarn add effect-cqrs effect

bun add effect-cqrs effect

It needs Node 24 or later and Effect 4. To store events in SQLite or PostgreSQL, add that database’s effect/sql driver too:

pnpm add @effect/sql-sqlite-node
pnpm add @effect/sql-pg

npm install @effect/sql-sqlite-node
npm install @effect/sql-pg

yarn add @effect/sql-sqlite-node
yarn add @effect/sql-pg

bun add @effect/sql-sqlite-node
bun add @effect/sql-pg

Everything is exported from effect-cqrs, and each module also has its own path, such as effect-cqrs/ViewModel.

The examples live in the repository, where they import the TypeScript sources directly.

Clone the repository and install the dependencies. It needs pnpm.

git clone https://github.com/davidnussio/effect-cqrs.git
cd effect-cqrs
pnpm install

Run the tests.
Terminal window
```
pnpm test
```
Run the tutorial’s shop, which uses every feature in one file.
Terminal window
```
pnpm tutorial
```
Run the todo example. It is the moleculer-cqrs README walkthrough as a program, on an in-memory SQLite database.
Terminal window
```
pnpm example
```
Serve the bank demo at http://localhost:5173.
Terminal window
```
pnpm ui
```
Serve the tutorial’s shop, with its traces, saga and stored rows.
Terminal window
```
pnpm ui:shop
```