Ethers.js usage example

The ethers.js library can be used to interact with the EVM+. In this example, we are retrieving the developerStatus of the EVM contract.

This will validate wether the provided address has the developer status enabled or not. If you wish to learn more about the development accounts, you can read up about them.

In order to be able to use the ethers.js library to interact with the predeployed smart contract, we need to add it as well as the precompiled smart contracts to the projects:

yarn --dev ethers @acala-network/contracts

The following example imports the ethers.js library and instantiates the connection to the RPC node of the network. It also utilizes the ADDRESS utility of @acala-network/contracts dependency and the precompiled EVM smart contract. We instantiate, call it using the ethers.js library and output the result:

const { ethers } = require("ethers");
const { EVM } = require("@acala-network/contracts/utils/Address");
const EVMContract = require("@acala-network/contracts/build/contracts/EVM.json");
const provider = new ethers.providers.JsonRpcProvider("https://eth-rpc-tc9.aca-staging.network");

const evmContract = new ethers.Contract(EVM, EVMContract.abi, provider);
// const address = '0xC9CB0Bd811343Dbf6B9f61704d736dCD1975a7cE'; // is dev
const address = '0x869e7ed360498A21da9c7EdDFc15FB98Bd1Bf607'; // is not dev

evmContract.developerStatus(address).then(res => {
  console.log("The developerStatus is: ", res);
}).catch(err => {
  console.log("An error occured", err);
})

Accessing the Oracle contract using Repl.it

Fork it and test at will