GetTopUniDelegates.js

let Web3 = require('web3');
let uniABI = require('./uniABI.json').abi;

const main = async () => {
    let web3 = new Web3('https://mainnet.infura.io/v3/b6c1c2a638ef45098692c3557068e65d');
    const uniAddress = "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984";
    let uni = new web3.eth.Contract(uniABI, uniAddress);

    let delegations = [];
    let startingBlock = 10_750_000;
    for(let i = startingBlock; i < await web3.eth.getBlockNumber()+10_000; i+=10_000) {
        console.log('indexing delegates');
        console.log(i);
        try {
            delegations.push(...await uni.getPastEvents('DelegateVotesChanged', {
                fromBlock: (i-10_000),
                toBlock: i
            }));
        } catch {
            delegations.push(...await uni.getPastEvents('DelegateVotesChanged', {
                fromBlock: (i-10_000),
                toBlock: i
            }));
        }
    }
    const delegateAccounts = {};

    delegations.forEach(e => {
        const { delegate, newBalance } = e.returnValues;
        delegateAccounts[delegate] = newBalance;
    });

    let delegates = [];
    Object.keys(delegateAccounts).forEach((account) => {
        const voteWeight = +delegateAccounts[account];
        if (voteWeight === 0) return;
        delegates.push({
        delegate: account,
        votes: voteWeight / 1e18
        });
    });

    delegates = delegates.sort((a, b) => {
        return a.votes < b.votes ? 1 : -1;
    });

    delegates = delegates.slice(0, 100);

    delegates.forEach(delegate => {
        console.log(`"${delegate.delegate}",`);
    })
}

main();