@biconomy/abstractjs/dist/_cjs/account/decorators/getUnifiedERC20Balance.js

SDK for Biconomy integration with support for account abstraction, smart accounts, ERC-4337.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getUnifiedERC20Balance = getUnifiedERC20Balance;
const viem_1 = require("viem");
async function getUnifiedERC20Balance(parameters) {
    const { mcToken, account: account_ } = parameters;
    const relevantTokensByChain = Array.from(mcToken.deployments).filter(([chainId]) => account_.deployments.some((account) => account.client.chain?.id === chainId));
    const balances = await Promise.all(relevantTokensByChain.map(async ([chainId, address]) => {
        const { publicClient, address: accountAddress } = account_.deploymentOn(chainId, true);
        const tokenContract = (0, viem_1.getContract)({
            abi: viem_1.erc20Abi,
            address,
            client: publicClient
        });
        const [balance, decimals] = await Promise.all([
            tokenContract.read.balanceOf([accountAddress]),
            tokenContract.read.decimals()
        ]);
        return {
            balance,
            decimals,
            chainId
        };
    }));
    return {
        ...balances
            .map((balance) => {
            return {
                balance: balance.balance,
                decimals: balance.decimals
            };
        })
            .reduce((curr, acc) => {
            if (curr.decimals !== acc.decimals) {
                throw Error(`
          Error while trying to fetch a unified ERC20 balance. The addresses provided
          in the mapping don't have the same number of decimals across all chains. 
          The function can't fetch a unified balance for token mappings with differing 
          decimals.
        `);
            }
            return {
                balance: curr.balance + acc.balance,
                decimals: curr.decimals
            };
        }),
        breakdown: balances,
        mcToken
    };
}
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