mev-inspect/lib/inspector.js

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

var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _Inspector_instances, _Inspector_getMev;
import Chain from './chain.js';
import classify from './classifier/index.js';
import { fetchPools, fetchNftPools, fetchMarkets } from './fetch.js';
import { getArbitrages, getJitSandwiches, getSeizures, getLiquidations, getLiquidityDeposits, getLiquidityWithdrawals, getRepayments, getSandwiches, getSwaps, getNftSwaps, getNftArbitrages, getTransfers, } from './mev/index.js';
import { groupBy } from './utils.js';
class Inspector {
    constructor(chainId, provider) {
        _Inspector_instances.add(this);
        Object.defineProperty(this, "chainId", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "provider", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "chain", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        this.chainId = chainId;
        this.provider = provider;
        this.chain = new Chain(provider);
    }
    async tx(hash) {
        const logs = await this.chain.getTransactionLogs(hash);
        return await __classPrivateFieldGet(this, _Inspector_instances, "m", _Inspector_getMev).call(this, logs);
    }
    async block(number) {
        const logs = await this.chain.getBlockLogs(number);
        return await __classPrivateFieldGet(this, _Inspector_instances, "m", _Inspector_getMev).call(this, logs);
    }
    async receipts(receipts) {
        const logs = this.chain.parseReceipts(receipts);
        const logsByBlock = groupBy(logs, (log) => log.blockNumber.toString());
        const mev = [];
        for (const block in logsByBlock) {
            const blockLogs = logsByBlock[block];
            const blockMev = await __classPrivateFieldGet(this, _Inspector_instances, "m", _Inspector_getMev).call(this, blockLogs);
            for (const mevItem of blockMev) {
                mev.push(mevItem);
            }
        }
        return mev;
    }
}
_Inspector_instances = new WeakSet(), _Inspector_getMev = async function _Inspector_getMev(logs) {
    if (logs.length === 0) {
        return [];
    }
    const block = logs[0].blockNumber;
    const events = classify(this.chainId, logs);
    const pools = await fetchPools(this.chainId, this.provider, events);
    const transfers = getTransfers(events);
    const swaps = getSwaps(this.chainId, pools, transfers, events);
    const arbitrages = getArbitrages(swaps);
    const markets = await fetchMarkets(this.chainId, this.provider, events);
    const repayments = getRepayments(this.chainId, markets, events);
    const seizures = getSeizures(this.chainId, markets, events);
    const liquidations = getLiquidations(repayments, seizures);
    const liquidityDeposits = getLiquidityDeposits(this.chainId, pools, transfers, events);
    const liquidityWithdrawals = getLiquidityWithdrawals(this.chainId, pools, transfers, events);
    const sandwiches = getSandwiches(this.chainId, swaps, liquidityDeposits, liquidityWithdrawals);
    const jitSandwiches = getJitSandwiches(swaps, liquidityDeposits, liquidityWithdrawals);
    const nftPools = await fetchNftPools(this.chainId, this.provider, events, block);
    const nftSwaps = getNftSwaps(this.chainId, nftPools, events, logs);
    const nftArbitrages = getNftArbitrages(nftSwaps);
    return [
        ...arbitrages,
        ...liquidations,
        ...sandwiches,
        ...jitSandwiches,
        ...nftArbitrages,
    ];
};
export default Inspector;
//# sourceMappingURL=inspector.js.map