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fix: Gains USDC collateral array index #2111

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Merged
Flotapponnier merged 1 commit into from
Aug 27, 2026
Merged

fix: Gains USDC collateral array index #2111

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5 changes: 3 additions & 2 deletions src/app/api/fee-compare/route.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -41,8 +41,9 @@ const EVM_WALLET_VENUES = new Set(["hyperliquid", "gains", "gmx-v2"]);
const GAINS_CARRY_PRECISION = 1e18;
// Fallback when API doesn't expose per-pair data (~0.04%/day expressed per-second)
const GAINS_BORROW_DEFAULT_PER_SEC = 0.0004 / 86400;
// USDC collateral index on Arbitrum (same as collateralIndex filter in fetchGainsTrades)
const GAINS_USDC_COLLATERAL_IDX = 3;
// USDC is array[2] in vars.collaterals (0-indexed); its collateralIndex field = 3 (1-indexed).
// The collateralIndex===3 filter in fetchGainsTrades refers to the field value, not the array position.
const GAINS_USDC_COLLATERAL_IDX = 2;

let gainsFeeCache: {
coinRoundTrip: Record<string, number>;
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