Skip to content

Instantly share code, notes, and snippets.

View johngrantuk's full-sized avatar

John Grant johngrantuk

View GitHub Profile
/**
* Example showing how to find a swap for a pair using SOR directly
* - Path only uses swaps: use queryBatchSwap on Vault to see result
* - Path use join/exit: Use SDK functions to build calls to submit tx via Relayer
*/
import dotenv from 'dotenv';
import { BigNumber, parseFixed } from '@ethersproject/bignumber';
import { Wallet } from '@ethersproject/wallet';
import { AddressZero } from '@ethersproject/constants';
import {
// Example using Etherscan API to analyse contract gas usage over time period.
// And .env file with ETHERSCAN API key. Free key from: https://etherscan.io/myapikey.
require('dotenv').config();
const moment = require('moment');
const axios = require('axios').default;
const Decimal = require('decimal.js');
export const BONE = new Decimal(10).pow(18);
// Returns all transactions for block range
@johngrantuk
johngrantuk / transactionDetails.ts
Created November 17, 2020 11:42
Example showing how to get tx info from tx hash using ethers.js
// Example showing how to get tx info from tx hash using ethers.js
// Add .env file with INFURA key. Free key from: https://infura.io/
require('dotenv').config();
import { JsonRpcProvider } from '@ethersproject/providers';
import { Interface } from '@ethersproject/abi';
async function getTransactionDetails(){
let txHash = `0x4b55c0b756dbfbcd997e94b98698241299d16d5297cd17aa463d280d215a1f52`; // Example tx hash from Etherscan
// npm add @ethersproject/abi
import { Interface } from '@ethersproject/abi';
function transactionParsing(){
console.log(`transactionParsing`);
const proxyArtifact = require('./abi/ExchangeProxy.json'); // See below
const iface = new Interface(proxyArtifact.abi);
require('dotenv').config();
var moment = require('moment');
const axios = require('axios').default;
const Decimal = require('decimal.js');
export const BONE = new Decimal(10).pow(18);
// Returns all transactions for block range
export async function fetchTransactions(startBlock, endBlock) {
const proxyAddr = `0x6317C5e82A06E1d8bf200d21F4510Ac2c038AC81`;
/*
I was doing this using the Klaytn network which is basically a centralised Ethereum clone.
The following code would work on Ethereum with a bit of a change - i.e. Caver to Web3
*/
/*
Example contract artificat addition:
"networks": {
"8217": {
var LeaderToken = artifacts.require("LeaderToken");
var UniSwapFactory = artifacts.require("uniswap_factory");
var UniSwapExchange = artifacts.require("uniswap_exchange");
contract("UniSwapFactory", accounts => {
it("Add Liquidity.", async () => {
var UniSwapFactoryInstance = await UniSwapFactory.deployed();
var LeaderTokenInstance = await LeaderToken.deployed();
var ExchangeInstance = await UniSwapExchange.deployed();
@johngrantuk
johngrantuk / App.js
Last active August 9, 2019 18:58
3Box & React Spaces Example
import React from 'react';
const Box = require('3box');
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
heading: 'What If I Told You', // Default values to display when no 3Box user settings loaded
@johngrantuk
johngrantuk / App.js
Created August 9, 2019 18:46
Minimal viable call for 3Box Spaces demo
import React from 'react';
const Box = require('3box');
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
heading: 'What If I Told You',
Question STORM
Is the token tied to a product usage, i.e. does it give the user exclusive access to it, or provide interaction rights to the product? Yes, 'Makers' are required to pay for posts in STORM tokens
Does the token grant a governance action, like voting on a consensus related or other decision-making factor? No
Does the token enable the user to contribute to a value-adding action for the network or market that is being built? Yes. Bolts can be used to boost Players access to tasks.
Does the token grant an ownership of sorts, whether it is real or a proxy to a value? No
Does the token result in a monetizable reward based on an action by the user (active work)?