A small JS library that fetches the CSV updates from Bletchley Indexes for a given date.
import BletchleyCSV from 'bletchley-indexes'
//...
//This month, most likely wont be published and throw an exception
let bletchleyDownloader = new BletchleyCSV()
let entries = await bletchleyDownloader.fetch()
//for august 2018
let august = new Date(2018,8,0)
let bletchleyDownloader = new BletchleyCSV(august)
let entries = await bletchleyDownloader.fetch()