const createInfuraProvider = require('newchain-json-rpc/src/createProvider') const Ethjs = require('ethjs') const provider = createInfuraProvider({ network: 'mainnet' }) const eth = new Ethjs(provider)

const createInfuraMiddleware = require('newchain-json-rpc') const RpcEngine = require('json-rpc-engine') const engine = new RpcEngine() engine.push(createInfuraMiddleware({ network: 'testnet' }))