corestore-1.js

const Corestore = require('corestore')
const SwarmNetworker = require('corestore-swarm-networking')

const store = new Corestore('./path-1')

store.ready(function () {
  const swarm = new SwarmNetworker(store)
  const feed = store.default()

  swarm.listen()

  feed.ready(() => {
    swarm.seed(feed.discoveryKey)
    console.log('key: ' + feed.key.toString('hex')) 
    console.log(feed)
  })

  feed.get(0, console.log)
})

corestore-2.js

const Corestore = require('corestore')
const SwarmNetworker = require('corestore-swarm-networking')

const store = new Corestore('./path-2')

store.ready(function () {
  const swarm = new SwarmNetworker(store)
  const feed = store.get(Buffer.from('... from above ...', 'hex'))

  swarm.listen()

  feed.ready(() => {
    swarm.seed(feed.discoveryKey)
    console.log(feed)
  })

  feed.get(0, console.log)
})