arguments de-constructing babel6

de-constructing.js

function isMessageAttributeValid ({DataType} = {}) {
  
  console.log(arguments)
  
  if (!DataType) {
    
    // throw new Error('A MessageAttribute must have a DataType key')
  }
  if (typeof DataType !== 'string') {
    // throw new Error('The DataType key of a MessageAttribute must be a String')
  }
  return true
}

isMessageAttributeValid(1)
// {"0":1}