opt-out.js

const { balanceOf } = require("@algo-builder/algob");
const { types } = require("@algo-builder/web");
const { issue } = require("../admin/issue");
const { fundAccount, tryExecuteTx } = require("../common/common");

/**
 * To opt-out of the token, do an asset transfer transaction with
 * closeRemainderTo == token creator address (creator == reserve in this case)
 * @param {*} deployer algobDeployer
 * @param {*} account account to opt-out of the token from
 */
async function optOut(deployer, account) {
	const tesla = deployer.asa.get("tesla");

	/*
	 * NOTE: User can only optOut asset to asset-creator account. If reserve account
	 * is different than creator, then creator will need to send these assets
	 * to reserve account (after user has opted out).
	 */
	const optOutParams = [
		{
			type: types.TransactionType.TransferAsset,
			sign: types.SignType.SecretKey,
			fromAccount: account,
			toAccountAddr: account.addr,
			assetID: tesla.assetIndex,
			amount: 0,
			payFlags: { totalFee: 1000, closeRemainderTo: tesla.creator },
		},
	];

	console.log(`* Opting out [${account.name}:${account.addr}] from token 'tesla' *`);
	await tryExecuteTx(deployer, optOutParams);
}

async function run(runtimeEnv, deployer) {
	const elon = deployer.accountsByName.get("elon-musk");
	const tesla = deployer.asa.get("tesla");

	// fund elon
	await fundAccount(deployer, elon);

	// opt in elon to tesla first
	await deployer.optInAccountToASA("tesla", elon.name, {});

	// in scripts flow we kill the tesla token before executing opt-out,
	// uncomment if running it in another sequence
	// first issue few tokens to elon
	// await issue(deployer, elon.addr, 15); // issue(mint) 15 tokens to elon from reserve

	/*
	 * Use below function to opt-out elon from token tesla
	 */
	await optOut(deployer, elon);

	console.log("Balance: ", await balanceOf(deployer, elon.addr, tesla.assetIndex)); // prints nothing
}

module.exports = { default: run, optOut: optOut };