mev-inspect/lib/mev/liquidations.js

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

function getLiquidations(repayments, seizures) {
    return seizures
        .map((seizure) => {
        const sender = seizure.transaction.from;
        const repayment = getRepayment(seizure, repayments);
        if (!repayment) {
            return null;
        }
        return {
            repayment,
            seizure,
            liquidator: { sender, beneficiary: seizure.seizor },
            borrower: seizure.borrower,
            collateral: {
                asset: seizure.asset,
                amount: seizure.amount,
            },
            debt: {
                asset: repayment.asset,
                amount: repayment.amount,
            },
        };
    })
        .filter((liquidation) => !!liquidation);
}
function getRepayment(seizure, repayments) {
    const repayment = repayments.reverse().find((repayment) => {
        if (seizure.contract.protocol.abi === 'CompoundV2') {
            return (repayment.event.logIndex < seizure.event.logIndex &&
                repayment.event.address === seizure.event.address &&
                repayment.payer === seizure.seizor &&
                repayment.borrower === seizure.borrower);
        }
        return repayment.event.logIndex === seizure.event.logIndex;
    });
    return repayment ? repayment : null;
}
export { getLiquidations };
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