I was trying to use Infura API to make an Ethereum web app. First I compiled a solidity contract and then deployed it using infura api on rinkeby network. Here is my deploy script which seems to be running successfully.
const HDWalletProvider = require("truffle-hdwallet-provider");
const Web3 = require('Web3');
const compileFactory = require('./build/CampaignFactory.json');
const provider = new HDWalletProvider(
"MY_SECRET_MNEMONIC",
"https://rinkeby.infura.io/v3/363ea9633bcb40bc8a857d908ee27094"
);
const web3 = new Web3(provider);
console.log("provider info: " + provider);
const deploy = async () => {
const accounts = await web3.eth.getAccounts();
console.log("account used: " + accounts[0]);
result = await new web3.eth.Contract(JSON.parse(compileFactory.interface))
.deploy({data: "0x"+compileFactory.bytecode})
.send({from: accounts[0]});
console.log("deployed to address: " + result.options.address);
};
deploy();
Then I created another script web3.js which creates a web3 provider using Infura api:
import Web3 from 'web3';
let web3;
if (typeof window !== 'undefined' && typeof window.web3!=='undefined') {
// we are in the browser and metamask is running.
web3 = new Web3(window.web3.currentProvider);
console.log("using metamask");
}
else {
// we are in server OR user without metamask.
const provider = new Web3.providers.HttpProvider(
"https://rinkeby.infura.io/v3/363ea9633bcb40bc8a857d908ee27094"
);
web3 = new Web3(provider);
console.log("using infura");
}
export default web3;
but when I import this web3.js file somewhere and then try to use 'web3' object, it returns empty array of accounts. For example:
import web3 from '../../ethereum/web3';
...
const accounts = await web3.eth.getAccounts();
console.log("Account list: "+accounts); // returns empty array.
But ideally, it should return the accounts list associated with my mnemonic. What is the problem?
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