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Ship AddressActivityRegistry V1/V2, ISO20022IntakeGateway, Chain138ParticipantSurface, checkpoint hub contracts, checkpoint-core package, aggregator/indexer/sdk services, relay profile guards, M00 diamond bridge facet, and OMNL compliance contracts. Co-authored-by: Cursor <cursoragent@cursor.com>
43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
"use strict";
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/**
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* Blockscout token-transfer enrichment — Chain 138 txs are mostly ERC-20; native `value` is often 0.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.pickPrimaryTokenTransfer = pickPrimaryTokenTransfer;
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exports.fetchTokenTransfersForTx = fetchTokenTransfersForTx;
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/** Pick the largest ERC-20 transfer in a tx (typical payment). */
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function pickPrimaryTokenTransfer(items) {
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let best = null;
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for (const item of items) {
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const token = item.token?.address;
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const raw = item.total?.value;
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if (!token || !raw)
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continue;
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const value = BigInt(raw);
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if (value === 0n)
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continue;
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const decimals = parseInt(item.token?.decimals || '18', 10);
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const summary = {
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token,
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tokenSymbol: item.token?.symbol || '',
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tokenDecimals: Number.isFinite(decimals) ? decimals : 18,
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from: item.from?.hash || '',
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to: item.to?.hash || '',
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value,
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logIndex: item.log_index ?? 0,
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};
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if (!best || summary.value > best.value)
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best = summary;
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}
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return best;
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}
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async function fetchTokenTransfersForTx(apiBase, txHash) {
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const base = apiBase.replace(/\/$/, '');
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const url = `${base}/transactions/${txHash}/token-transfers`;
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const res = await fetch(url);
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if (!res.ok)
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return null;
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const body = (await res.json());
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return pickPrimaryTokenTransfer(body.items ?? []);
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}
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