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zeekayandHanzo Dev
a9310b0af3
The swap form's four questions were split across two services: the indexer answered what can be traded and what it pays, while a TypeScript service answered what to approve and what to sign. The last two need the route the first two produced, so the split meant a quote crossed a process boundary to be turned into calldata. HandleSwap encodes the router call from a quote and bounds it by the caller's slippage. It reads no state — the quote already carries the route, the amounts and each hop's fee, and re-reading here would be a second opinion about a price the caller has already accepted, a block later than the one they saw. HandleCheckApproval reads the allowance the router holds and returns the grant when it falls short. Silence from a token is not an allowance of zero, and an unreachable node is not either; both would skip an approval and leave the swap to revert. The conversation with a chain moves to one type. It was a method on the quoter, which left the approval endpoint either reaching through a quoter to ask an unrelated question or growing a second copy of the batching, timeout and decode. Calldata is asserted against bytes recorded from the service being retired, across exact-input, exact-output, single-hop and multi-hop. A wallet signs these, so a byte is the unit of correctness. Co-authored-by: Hanzo Dev <[email protected]>