warframe-items drop mismatch

compare.js

const request = require('request-promise')

async function fetchBuild(uri) {
  return request({ uri, json: true })
}
function getDiff(oldItem, newItem) {
  if (oldItem.drops && !newItem.drops) {
    return { item: oldItem.uniqueName, old: oldItem.drops.length, new: 0 }
  }
  else if (oldItem.drops && newItem.drops && oldItem.drops.length !== newItem.drops.length) {
    return { item: oldItem.uniqueName, old: oldItem.drops.length, new: newItem.drops.length }
  }
  return null
}
function addDiff(diff, result) {
  if (!diff) return
  if (result.find(i => i.item === diff.item)) return
  result.push(diff)
}

async function compare(oldBranch, newBranch) {
  const getUrl = branch => `https://raw.githubusercontent.com/WFCD/warframe-items/${branch}/data/json/All.json`
  const oldBuild = await fetchBuild(getUrl(oldBranch))
  const newBuild = await fetchBuild(getUrl(newBranch))
  const result = []

  for (const oldItem of oldBuild) {
    const newItem = newBuild.find(i => i.uniqueName === oldItem.uniqueName)
    addDiff(getDiff(oldItem, newItem), result)
    if (!oldItem.components) continue

    for (const oldComponent of oldItem.components) {
      const newComponent = newItem.components.find(c => c.uniqueName === oldComponent.uniqueName)
      addDiff(getDiff(oldComponent, newComponent), result)
    }
  }

  console.log(result)
}

compare('development', 'faster-drops')