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Setup

ContractKit requirements, installation, and initialization.

Installation and System Requirements​

To install, run the following:

npm install web3 @celo/contractkit

You will need Node.js v12.x.

Initializing the Kit​

To start working with ContractKit you need a kit instance and a valid net to connect with. In this example will use alfajores (you can read more about it here)

import Web3 from "web3";
import { newKitFromWeb3 } from "@celo/contractkit";

const web3 = new Web3("https://alfajores-forno.celo-testnet.org");
const kit = newKitFromWeb3(web3);

Go to the page about Forno for details about different connection types and network endpoints.

Initialize the Kit with your own node​

If you are hosting your own node (you can follow this guide to run one) you can connect our ContractKit to it.

import Web3 from "web3";
import { newKitFromWeb3 } from "@celo/contractkit";

// define localUrl and port with the ones for your node

const web3 = new Web3(`${localUrl}:${port}`);
const kit = newKitFromWeb3(web3);

Same as Web3 we support WebSockets, RPC and connecting via IPC. For this last one you will have to initialize the kit with an instances of Web3 that has a valid IPC Provider

import Web3 from "web3";
import { newKitFromWeb3 } from "@celo/contractkit";

const web3Instance: Web3 = new Web3(
  new Web3.providers.IpcProvider("/Users/myuser/Library/CeloNode/geth.ipc", net)
);

const kit = newKitFromWeb3(web3Instance);