subspace/test/test2.js

const { map, scan, last, distinctUntilChanged } = require('rxjs/operators');
const Web3 = require('web3');

let web3 = new Web3("ws://localhost:8545");

let myscan = scan((acc, curr) => {
  acc.push(curr);
  if (acc.length > 4) {
    acc.shift();
  }
  return acc;
}, [])

let mymap = map(arr => arr.reduce((acc, current) => acc + current, 0) / arr.length)

async function deployContract() {
  let accounts = await web3.eth.getAccounts();

  // pragma solidity >=0.4.22 <0.6.0;
  // contract Escrow {
  //     event Created(uint indexed escrowId, address buyer, address seller);
  //     function createEscrow(uint escrowId, address buyer, address seller) external {
  //         emit Created(escrowId, buyer, seller);
  //     }
  // }

  let abi = [
    {
      "constant": false,
      "inputs": [
        {
          "name": "escrowId",
          "type": "uint256"
        },
        {
          "name": "buyer",
          "type": "address"
        },
        {
          "name": "seller",
          "type": "address"
        }
      ],
      "name": "createEscrow",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "name": "escrowId",
          "type": "uint256"
        },
        {
          "indexed": false,
          "name": "buyer",
          "type": "address"
        },
        {
          "indexed": false,
          "name": "seller",
          "type": "address"
        }
      ],
      "name": "Created",
      "type": "event"
    }
  ]

  var contract = new web3.eth.Contract(abi)
  let instance = await contract.deploy({
    data: '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',
    arguments: []
  }).send({
    from: accounts[0],
    gas: '4700000'
  })
  return instance
}

async function run() {
  let accounts = await web3.eth.getAccounts();
  var EscrowContract = await deployContract()
  console.dir(EscrowContract)

  await EscrowContract.methods.createEscrow(1, accounts[0], accounts[1]).send({from: accounts[0]})
  await EscrowContract.methods.createEscrow(1, accounts[1], accounts[2]).send({from: accounts[0]})
  await EscrowContract.methods.createEscrow(1, accounts[1], accounts[0]).send({from: accounts[0]})
  await EscrowContract.methods.createEscrow(1, accounts[0], accounts[2]).send({from: accounts[0]})

  // EscrowContract.events.getPastEvents('Rating', {fromBlock: 1})
  EscrowContract.events.Created({fromBlock: 1}, (err, event) => {
    // console.dir("new event")
    // console.dir(event)
  })

  const EventSyncer = require('../src/eventSyncer.js')
  const eventSyncer = new EventSyncer(web3);

  eventSyncer.init(() => {
    console.dir("getting escrows created by " + accounts[0])

    // eventSyncer.trackEvent(EscrowContract, 'Created', ((x) => true)).pipe().subscribe((v) => {
    eventSyncer.trackEvent(EscrowContract, 'Created', {filter: {buyer: accounts[0]}, fromBlock: 1}).pipe().subscribe((v) => {
    // eventSyncer.trackEvent(EscrowContract, 'Rating', ((x) => true)).pipe(map(x => x.rating)).subscribe((v) => {
      console.dir("value is ")
      console.dir(v)
    });

  });

}

run()