createFundedAccount.js

const ethers = require('ethers');

const provider = new ethers.JsonRpcProvider('http://localhost:8545');

async function createFundedAccount() {

	const accounts = await provider.listAccounts();
	const fundedAccountsWithKnownPrivateKey = [];

	for (const account of accounts) {
		const balance = await provider.getBalance(account);

		if (balance < 1) {
			continue;
		}

        const mnemonicPhrase = "test test test test test test test test test test test junk";
        const nonce = await provider.getTransactionCount(account);
        const path = `m/44'/60'/0'/0/${nonce}`;
        const wallet = ethers.HDNodeWallet.fromMnemonic(ethers.Mnemonic.fromPhrase(mnemonicPhrase), path);

		const gasLimit = await provider.estimateGas({
			from: account.address,
			to: wallet.address,
			value: 1000000000000000000000n,
		});

		const tx = {
			to: wallet.address,
			value: 10000000000000000000000n,
			gasPrice: 100n,
			gasLimit: gasLimit,
		};

		const response = await account.sendTransaction(tx);
		await response.wait();

		fundedAccountsWithKnownPrivateKey.push(wallet);

		// We only need one funded account
		break;
	}

	for (const wallet of fundedAccountsWithKnownPrivateKey) {
		console.log(`${wallet.privateKey}`);
		break;
	}
}

createFundedAccount();