Use async generators and async iterators with DynamoDB's scan

generator.js

const { docClient } = require('../services/dynamodb')

exports.findAllItems = async function* () {
  let response = {}
  let ExclusiveStartKey
  do {
    response = await docClient.scan({
      TableName: 'mytable',
      Limit: 500,
      ExclusiveStartKey
    }).promise()
    const items = response.Items
    for (let item of items) {
      yield item
    }
    ExclusiveStartKey = response.LastEvaluatedKey
  } while (response.LastEvaluatedKey)
}

iterator.js

const findAllItems = require('./generator.js')

for await (const item of findAllItems()) {
  console.log(item)
}

this code is so hip, have a star.