npm install ipfs-blob-store

const ipfsBlobStore = require('ipfs-blob-store')

const store = await ipfsBlobStore()

store.exists('/my-file.txt', (error, exists) => {
  // ...
})

const ipfsBlobStore = require('ipfs-blob-store')
const IPFS = require('ipfs')

const node = new IPFS({
  // some config here
})

node.once('ready', () => {
  const store = await ipfsBlobStore({
    ipfs: node
  })

  store.exists('/my-file.txt', (error, exists) => {
    // ...
  })
})

const ipfsBlobStore = require('ipfs-blob-store')

const store = await ipfsBlobStore({
  host: '127.0.0.1',
  port: 5001
})

store.exists('/my-file.txt', (error, exists) => {
  // ...
})

var options = {
  ipfs: null, // an instance of ipfs or ipfs-api
  port: 5001,   // default value
  host: '127.0.0.1', // default value
  baseDir: '/', // default value
  flush: true  // default value
}

const store = await ipfsBlobStore(options)