'use strict'
const { createPool } = require('../')
const ethers = require("ethers")

/**
 * Init pool, with limit of 2 parallel connections
 */
const pool = createPool(ethers.providers.JsonRpcProvider, 2)

/**
 * Add URLs for round robing requests
 */
pool.addUrl('https://mainnet.infura.io/...')
pool.addUrl('https://rpc.ankr.com/eth_goerli')

/**
 * Get provider
 */
const provider = pool.nextProvider()

/**
 * Use provider
 */
provider.getBlockNumber().then(resp => {
  console.dir(resp)

  /**
   * Release provider
   */
  pool.releaseProvider(provider)
})