oops2.js

const fs = require('fs')
const hyperdrive = require('hyperdrive')
const src = `/tmp/${Math.random()}/`
console.log(src)
const storage = require('dat-storage')(src)

const archive = hyperdrive(storage, { latest: true, indexing: true })
archive.writeFile('/dat.json', 'hi', err => {
  if (err) throw err

  //console.log(fs.readFileSync(`${src}/dat.json`)) // => empty
  archive.readFile('/dat.json', (err, data) => {
    if (err) throw err // => error (couldn't satisfy length)
    console.log('data', data)
  })
})