@lido-sdk/react/dist/esm/hooks/useTokenBalance.js

This project is being slowly deprecated and may not receive further updates. Check out [modern Lido SDK](https://github.com/lidofinance/lido-ethereum-sdk/pulls) to access latest functionality. It is actively maintained and is built for interacting with Li

import invariant from 'tiny-invariant';
import warning from 'tiny-warning';
import { useEffect } from 'react';
import { getERC20Contract } from '@lido-sdk/contracts';
import { useContractSWR } from './useContractSWR.js';
import { useSDK } from './useSDK.js';
import { useDebounceCallback } from './useDebounceCallback.js';

const useTokenBalance = (token, account, config) => {
    const { providerRpc, providerWeb3, account: sdkAccount } = useSDK();
    const mergedAccount = account !== null && account !== void 0 ? account : sdkAccount;
    invariant(token != null, 'Token is required');
    const contractRpc = getERC20Contract(token, providerRpc);
    const contractWeb3 = providerWeb3
        ? getERC20Contract(token, providerWeb3)
        : null;
    const result = useContractSWR({
        shouldFetch: !!mergedAccount,
        contract: contractRpc,
        method: 'balanceOf',
        params: [mergedAccount],
        config,
    });
    const updateBalanceDebounced = useDebounceCallback(result.update, 1000);
    useEffect(() => {
        if (!mergedAccount || !providerWeb3 || !contractWeb3)
            return;
        try {
            const fromMe = contractWeb3.filters.Transfer(mergedAccount, null);
            const toMe = contractWeb3.filters.Transfer(null, mergedAccount);
            providerWeb3.on(fromMe, updateBalanceDebounced);
            providerWeb3.on(toMe, updateBalanceDebounced);
            return () => {
                providerWeb3.off(fromMe, updateBalanceDebounced);
                providerWeb3.off(toMe, updateBalanceDebounced);
            };
        }
        catch (error) {
            return warning(false, 'Cannot subscribe to events');
        }
    }, [providerWeb3, contractWeb3, mergedAccount, updateBalanceDebounced]);
    return result;
};

export { useTokenBalance };