Serverless Offline plugin to support step functions.

# dependencies:
$ npm install -D serverless-offline, serverless-step-functions

# the fun stuff
$ npm install -D serverless-offline-step-functions

• Add to plugins section in serverless.yml:

plugins:
  - serverless-step-functions
  - serverless-offline-step-functions
  - serverless-offline

• If your resources have a prefix added during deploy time, add the resourcePrefix confing to the serverless.yml custom section. This will allow serverless-offline-step-functions to find the resources. See below for an example:

custom:
  serverless-offline-step-functions:
    resourcePrefix: ${self:service}-${self:provider.stage}-

• If you use serverless-plugin-typescript, you may need to have custom path where the code is transpiled

custom:
  serverless-offline-step-functions:
    srcPath: '.build'

The plugin also sets up a server to run any lambdas that make use of the StepFunctions API in the aws-sdk. The default port is 8014; however, you can specify which port to listen to like so:

custom:
  serverless-offline-step-functions:
    port: 8014

Serveless Offline will now be able to run your state machines similar to AWS!

• Task
• Pass
• Wait
• Succeed
• Fail
• Choice
• Parallel

For a full (Hello World) example project, take a look at this repo:

Learning AWS Step Functions

For a walkthrough of the example project and to learn more about AWS States and Step Functions, checkout my post on Medium:

Stepping Through AWS Step Functions

For AWS' documentation, you can start here:

What Is AWS Step Functions?