coinbase-pro-feed

Lightweight Coinbase Pro Websocket Feed implementation.

Install

npm install -s coinbase-pro-feed

.feedFor(product_ids[, options[, env]])

The feed wraps websocket client using stream.Readable:

const { feedFor } = require('coinbase-pro-feed')

feedFor(['btc-eur'], { objectMode: false }) // when false
  .pipe(process.stdout)                     // data event invokes raw buffer

feedFor(['btc-eur'], { objectMode: true }) // when true
  .on('data', console.log)                 // data event invokes parsed object

• product_ids (default: [])
• options (default: { objectMode = true, channels: ['full'] })
• env (default: process.env)

.socketFor(product_ids[, options[, env]])

The websocket client allows you to connect and listen to exchange messages.

const { feedFor } = require('coinbase-pro-feed')

socketFor(['btc-eur'], { channels })
  .on('open', () => {
    console.log('open') // socket connected
  })
  .on('data' (data) => {
    console.log('data:', data) // parsed messages
  })
  .on('error', (err) => {
    console.error('error:', err) // socket error
  })
  .on('close', () => {
    console.log('close') // socket closed
  })

Command Line Interface (CLI)

When installed globally it is possibile to access the command line interface:

npm install --global coinbase-pro-feed

Usage

coinbase-pro-feed btc-eur eth-eur ltc-eur

# stdout compatible with http://jsonlines.org