Tim Daubenschütz TimDaub

Don't want to see package-lock.json and yarn.lock in your git diff? Here are two nifty aliases that hide these files from your diff.

alias gd="git diff -- :!package-lock.json :!yarn.lock"
alias gds="git diff --staged -- :!package-lock.json :!yarn.lock"

Minimal example making webpack and wasm/Emscripten work together.

Build instructions:

Clone this gist
npm install
npm start
Open http://localhost:8080
Look at console

How to integrate the Ledger device with a Ethereum Web Application

This is a quick guide to show how to integrate Ledger Ethereum libraries into an existing web application.

If you are starting a new DApp project from scratch, or simply are beginning in this Ethereum Smart Contract world, we have made create-dapp Starter Kit for you, it comes with a out-of-the-box support of Ledger and MetaMask and shows a complete smart contract example (that allows to get/set a value globally).

Whether you want to integrate on an existing app or bootstrap it from scratch with our starter kit, the follow guide will drive you to important part on how things work with the Ledger.

Prerequisites of the guide

1st ETH -> XRP Interledger Escrow Payment

Here are the transaction IDs (and links to the block explorers) for the first livenet Ethereum and Ripple Consensus Ledger (RCL) escrowed transfers comprising an Interledger payment.

Ethereum prepare: 0x00cbb6149b9cfb3cedf280251c3060b2a38776fa7792b578b6f9f39ce5ee0266
RCL prepare: 7F0A5F16C84568D96DA6A66058CD9EAA881236237642BF7427A458957A752B6B
RCL fulfill: 12A4CAFAE95254844513C5C11488A1195C08DEFF673C97AC74AAC121935DDE36
Ethereum fulfill: 0xb59dd839ab0b5e7d4e663b7cfc0ddb70eaf73dd2785b3d3a4abdf1a61817007d

SHA-256 Condition: `d2

	import tiimPrivateSale from './ethereum/tiimPrivateSale';

	...

	submitPrivateSale = async (event) => {
	event.preventDefault();

	const {investor, value, bonus} = this.state;

	this.closeSaleForm();

	// In JavaScript, constructors can only be synchronous right now. This makes sense
	// from the point of view that a constructor is a function that returns a newly
	// initialized object.
	//
	// On the other hand, it would sometimes be very handy, if one could have async
	// constructors, e.g. when a class represents a database connection, and it is
	// desired to establish the connection when you create a new instance.
	//
	// I know that there have been discussions on this on StackOverflow & co., but
	// the so-far mentioned counter arguments (such as: doesn't work as expected

	const Web3 = require('web3') // Works with web3 1.0.0-beta27
	const contractArtifact = require('./build/contracts/TutorialToken.json')

	const web3 = new Web3()
	const providerUrl = 'ws://localhost:8545' // requires # https://github.com/trufflesuite/ganache-cli/releases/tag/v7.0.0-beta.0 or https://github.com/trufflesuite/ganache/releases/tag/v1.1.0-beta.0
	const provider = new Web3.providers.WebsocketProvider(providerUrl)
	web3.setProvider(provider)

	web3.eth.net.getId()
	.then(networkId => {

	const ipfs = require("nano-ipfs-store").at("https://ipfs.infura.io:5001");

	(async () => {

	const doc = JSON.stringify({
	foo: "bar",
	tic: "tac"
	});

	const cid = await ipfs.add(doc);

	const fs = require('fs');
	const solc = require('solc');
	const Web3 = require('web3');
	const Tx = require('ethereumjs-tx')

	// Private key to use to sign the transactions
	// To decrypt your private key, use e.g. https://www.myetherwallet.com/#view-wallet-info
	// You will find your private key file in e.g. .ethereum/keystore or .parity/keys
	// In this example the key should correspond to the web3.eth.coinbase address
	var privateKey = new Buffer('088c110b6861b6c6c57461370d661301b29a7570d59cb83c6b4f19ec4b47f642', 'hex')

	FROM php:7.1.2-apache
	RUN docker-php-ext-install mysqli