Fetching all issuer trustlines (node, websocket)

sample.js

const { XrplClient } = require('xrpl-client')

const account = 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B' // The issuer, Bitstamp USD
const currency = 'USD'

const client = new XrplClient()

const main = async () => {
  await client.ready()
  const { account_data } = await client.send({ command: 'account_info', account })

  let marker = ''
  const l = []
  while (typeof marker === 'string') {
    const lines = await client.send({ command: 'account_lines', account, marker: marker === '' ? undefined : marker })
    marker = lines?.marker === marker ? null : lines?.marker
    console.log(`Got ${lines.lines.length} results`)
    lines.lines.forEach(t => {
      if (t.currency === currency) {
        l.push(t.account)
      }
    })
  }

  console.log('# Trust Lines:', l.length)

  client.close()
}

main()