mev-inspect/lib/classifier/items/bancorV3.js

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

import exchangeAbi from '../../abi/bancorV3.js';
function isValid(event) {
    return event.name === 'TokensTraded';
}
function getPoolCalls() {
    return [];
}
function processPoolCalls(_results, address) {
    return {
        factoryAddress: address.toLowerCase(),
        assets: [],
    };
}
function parse(pool, event) {
    const { values, transactionFrom, transactionHash: hash, transactionIndex, gasUsed, logIndex, address, blockHash, blockNumber, } = event;
    const sourceToken = normalizeAsset(values.sourceToken.toLowerCase());
    const targetToken = normalizeAsset(values.targetToken.toLowerCase());
    const sourceAmount = values.sourceAmount;
    const targetAmount = values.targetAmount;
    const trader = values.trader.toLowerCase();
    const from = trader;
    const to = trader;
    const assetIn = sourceToken;
    const assetOut = targetToken;
    const amountIn = sourceAmount;
    const amountOut = targetAmount;
    return {
        contract: {
            address,
            protocol: {
                abi: 'BancorV3',
                factory: pool.factory,
            },
        },
        block: {
            hash: blockHash,
            number: blockNumber,
        },
        transaction: {
            from: transactionFrom.toLowerCase(),
            hash,
            index: transactionIndex,
            gasUsed,
        },
        event: {
            address: address.toLowerCase(),
            logIndex,
        },
        from,
        to,
        assetIn: {
            type: 'erc20',
            address: assetIn,
        },
        amountIn,
        assetOut: {
            type: 'erc20',
            address: assetOut,
        },
        amountOut,
        metadata: {},
    };
}
function normalizeAsset(asset) {
    if (asset == '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee') {
        return '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2';
    }
    return asset;
}
const CLASSIFIER = {
    swap: {
        type: 'swap',
        protocol: 'BancorV3',
        abi: exchangeAbi,
        isValid,
        parse,
        pool: {
            getCalls: getPoolCalls,
            processCalls: processPoolCalls,
        },
    },
};
export default CLASSIFIER;
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