import { type TransactionReceipt } from "ethers";
/**
 * Derives the Starknet L1-handler transaction hash from an Ethereum deposit receipt.
 *
 * The derivation mirrors the algorithm used by StarkGate's live-transfers package:
 * it parses the `LogMessageToL2` event emitted by the Starknet Core Contract and
 * re-computes the L2 transaction hash using the same Pedersen-hash formula applied
 * by the Starknet sequencer.
 *
 * @param receipt - Mined Ethereum transaction receipt of the deposit.
 * @param snChainIdFelt252 - The Starknet chain ID as a felt252 hex string
 *   (e.g. `constants.StarknetChainId.SN_MAIN`). Use `ChainId.toFelt252()`.
 * @returns The predicted Starknet transaction hash, or `null` if the receipt
 *   does not contain a `LogMessageToL2` event.
 */
export declare function deriveStarknetDepositTxHash(receipt: TransactionReceipt, snChainIdFelt252: string): string | null;
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