Step Function

Here are the function signatures you can use to implement a step function:

• with callbacks:

function (context, input, cb) {
  ...
  cb(err, output)
}

• with promises:

function (context, input) {
  return new Promise ((resolve, reject) => {
    ...
    resolve(output) || reject(err)
  })
}

• with async/await:

async function (context, input) {
  ...
  return output || throw err
}

Context

The context contains of the following properties:

• Logger
• Storage
• DeviceInfo
• AppInfo
• Meta