groupIntoBatches.js

  groupIntoBatches (array) {
    const batchSize = 100
    const totalBatches = Math.ceil(array.length / batchSize)
    let batches = []
     _.times(totalBatches, (index) => {
      const start = index * batchSize
      let end = (index + 1) * batchSize
      const batch = array.slice(start, end)
      batches.push(batch)
    })
    return batches
  },