To help you get started, we've collected the most common ways that eth-connect is being used within popular public projects.

decentraland / explorer / kernel / packages / shared / ethereum / EthereumService.ts View on Github

export async function requirePayment(toAddress: string, amount: number, currency: string): Promise {
  try {
    let fromAddress = await getUserAccount()
    if (!fromAddress) {
      throw new Error(`Not a web3 game session`)
    }

    let result: Promise

    if (currency === 'ETH') {
      result = requestManager.eth_sendTransaction({
        to: toAddress,
        from: fromAddress,
        // TODO: fix this in eth-connect
        value: toWei(amount as any, 'ether') as any,
        data: null as any
      })
    } else {
      const supportedTokens: Record = {} // a TODO: getNetworkConfigurations(network).paymentTokens

      if (currency in supportedTokens === false) {
        // tslint:disable:no-console
        console.warn(`WARNING! Using a non-supported coin. Skipping operation! Please use one of the next coins 'ETH'`)
        return false
      }

      const contractInstance = await getERC20(requestManager, supportedTokens[currency])

      // Check this account has enough tokens for the transaction
      const balance = await getERC20Balance(fromAddress, contractInstance.address)
      if (balance.lt(amount)) {

View more ways to use eth-connect

eth-connect

eth-connect is a TypeScript-based web3 library alternative which implements the Generic JSON RPC spec as well.

You can follow the JavaScript API documentation until TypeScript docs are released.

Design goals

• A Typed web3.js alternative
• Have as few convention-invented functions as possible (by following the RPC specs as much as possible)
• Leverage WS and HTTP providers
• Portable (support and work equally in both browser and node)
• Painless eth usage: Using contract factories, well-split event types (block, transaction and contracts plus topics)
• async/await out of the box

Installation

Using NPM:

npm i eth-connect

Importing as a browser module:

Examples

Below are some simple illustrative examples. You can also find more complete examples are in the integration /tests folder.

Initialize with a provider

import { RequestManager } from 'eth-connect'

// using the injected MetaMask provider
const requestManager = new RequestManager(web3.currentProvider)

const myBalance = await requestManager.eth_getBalance(myAddress)

or

import { RequestManager, HTTPProvider } from 'eth-connect'

const provider = 'my-own-RPC-url'
const providerInstance = new HTTPProvider(provider)
const requestManager = new RequestManager(providerInstance)

const someBalance = await requestManager.eth_getBalance(someAddress)

Initialize a contract

import { RequestManager, ContractFactory } from 'eth-connect'

const abi = require('./some-contract-abi.json')
// using the injected MetaMask provider
const requestManager = new RequestManager(web3.currentProvider)

const factory = new ContractFactory(requestManager, abi)
const instance = await factory.at(address)

console.log('Calling a method', await instance.mint(myAddress))

Get the accounts

import { RequestManager } from 'eth-connect'

const requestManager = new RequestManager(web3.currentProvider)

const accounts = await requestManager.eth_accounts()

Build the project

Clone this project and run the following in the terminal:

make build

Run tests

make test-local

Comparison

	web3	eth-connect
Browser support	✔	✔
Promise API	✖	✔
Strict type checks	✖	✔
TS/JS Docs	✖	✔
Wiki Docs	✔	?
Coverage
Dependents
Install size

Full documentation

Follow this link to read the full documentation for eth-connect here.

Project Status

You may find issues while using this library, as it's still under development. Please report any issues you come accross.