Coinbase Fetch All Balances

"use strict";

const ccxt = require ('../../js/ccxt.js')

console.log ('CCXT Version:', ccxt.version)

async function fetchAllBalances (exchange) {
   const params = {}
   let balance = {}
   while (true) {
       const response = await exchange.fetchBalance (params)
       balance = exchange.extend (balance, response)
       const info = exchange.safeValue (response, 'info', {})
       const pagination = exchange.safeValue (info, 'pagination', {})
       const startingAfter = exchange.safeString (pagination, 'next_starting_after')
       if (startingAfter !== undefined) {
           params['starting_after'] = startingAfter
       } else {
           break
       }
   }
   return balance
}

async function main () {
   const exchange = new ccxt.coinbase ({
       // Value is the "name" field in the api_key.json file Coinbase will offer for download
       apiKey: 'organizations/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/apiKeys/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
       // This is the "privateKey" field in that JSON file
       secret: '-----BEGIN EC PRIVATE KEY-----\nxxx...xxx==\n-----END EC PRIVATE KEY-----',
   })
   const markets = await exchange.loadMarkets ()
   // coinbase.verbose = true // uncomment for debugging purposes if necessary
   const balance = await fetchAllBalances (exchange)
   console.log (balance)
}

main ()