Defining flows

To define a stateful flow, create a .js file with the name of the flow within the server/flows directory:

$ cd <app>
$ touch server/flows/<flow>.js

Shared code

The server/flows directory must only contain flows. If you want to add a directory or a file that is shared across multiple flows, put it into the server/shared folder.

E.g., if you want to define a flow called handleInvoice, use the following directory structure:

<app>
  server
    flows
      handleInvoice.js
    readModel
    shared
    writeModel

Structuring the code

Every stateful flow uses the same base structure. Hence, you can prepare a flow by simply copying and pasting the following template:

'use strict';

const identity = {};

const initialState = {
  is: 'pristine'
};

const transitions = {};

const reactions = {};

module.exports = { identity, initialState, transitions, reactions };

# Defining flows

# Structuring the code

Defining flows

Structuring the code