Backend-store NPM

backend-store

Backend store manages business logic functions in Node.js backend application.

It allows to define functions and to call them each other through the store
It allows to use custom middleware executed before/after each function call
It has built-in set of business logic error classes
It has built-in few simple yet powerful plugins

What it's trying to solve:

Simplifies code organisation
Simplifies code testing
Simplifies error handling
Simplifies logging and error tracking

Install

$ yarn add backend-store

Usage

import { Store } from 'backend-store'
import logger from 'backend-store/plugins/logger'

// create store
const store = new Store()

// use logger plugin (see console output what it can do)
store.plugin(logger)

// define method that calls other method
store.define('api/users/create', async (payload = {}, { context, errors, dispatch }) {
  if (!context || !context.user || context.user.role !== 'admin') {
    throw new errors.AuthorizationError('Only admin can create posts')
  }
  const post = await dispatch('database/users/insert', {
    title: payload.title,
    userId: context.user.id
  })
  return post
})

// define another method
store.define('database/users/insert', async ({ title, userId }) {
  return {
    id: 1,
    title,
    userId
  }
})

// call (dispatch) method in store; pass payload and context
store.dispatch('api/users/create', { title: 'hello!' }, {
  user: { role: 'admin' }
}).then(post => {
  console.log(post)
})

More examples in docs