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fix(swap): force flashloan flow for Paraswap collateral swaps #3012

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fix(swap): force flashloan flow for Paraswap collateral swaps #3012

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6 changes: 4 additions & 2 deletions src/components/transactions/Swap/hooks/useFlowSelector.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -146,9 +146,11 @@ export const healthFactorSensibleSwapFlowSelector = ({
? valueToBigNumber(hfAfterSwap).lt(LIQUIDATION_DANGER_THRESHOLD)
: false;

// Paraswap can't price or trade aTokens, so a collateral swap can't use the simple aToken path; it must go through the flashloan adapter, which unwraps to the underlying. CoW repay/debt swaps likewise have no non-flashloan path.
const forceFlashloanFlow =
state.provider === SwapProvider.COW_PROTOCOL &&
(state.swapType === SwapType.RepayWithCollateral || state.swapType === SwapType.DebtSwap);
(state.provider === SwapProvider.COW_PROTOCOL &&
(state.swapType === SwapType.RepayWithCollateral || state.swapType === SwapType.DebtSwap)) ||
(state.provider === SwapProvider.PARASWAP && state.swapType === SwapType.CollateralSwap);

@chatgpt-codex-connector chatgpt-codex-connector Bot Jun 8, 2026

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P1 Badge Force flashloan before requiring a ParaSwap quote

This new ParaSwap collateral-swap override only runs after the early guard has already required state.swapRate (line 97), but the first quote is still requested with useFlashloan === false, so useSwapQuote uses the aToken addressToSwap pair for ParaSwap. For any collateral pair where ParaSwap rejects the unlisted aToken quote instead of returning a bogus route, state.swapRate remains undefined and this line is never reached, leaving the flow stuck on the broken non-flashloan/aToken path with a quote error. The forced flow needs to be selected before the initial quote can fail, or this fix only works for aTokens that happen to get a response.

Useful? React with 👍 / 👎.

const useFlashloan =
forceFlashloanFlow ||
(extendedUser?.healthFactor !== '-1' &&
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