mev-inspect/lib/mev/liquidityWithdrawals.js

A JS port of 'mev-inspect-py' optimised for ease of use.

import { isValidFactory, } from '../classifier/index.js';
function getPoolAddress(log) {
    if (log.classifier.type !== 'liquidity_withdrawal') {
        return '';
    }
    if (log.classifier.protocol === 'BalancerV2') {
        const poolId = log.values.poolId;
        return poolId.substring(0, 42);
    }
    return log.address.toLowerCase();
}
function getLiquidityWithdrawals(chainId, pools, transfers, logs) {
    return logs
        .map((log) => {
        if (log.classifier.type !== 'liquidity_withdrawal') {
            return null;
        }
        const poolAddress = getPoolAddress(log);
        const pool = pools.find((pool) => pool.address === poolAddress);
        if (!pool) {
            return null;
        }
        const protocol = log.classifier.protocol;
        if (!protocol) {
            return null;
        }
        const swapProtocol = protocol;
        if (!isValidFactory(chainId, swapProtocol, pool.factory)) {
            return null;
        }
        return log.classifier.parse(pool, log, transfers);
    })
        .filter((withdrawal) => !!withdrawal);
}
export default getLiquidityWithdrawals;
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