/** OP Stack L2ToL1MessagePasser predeploy (source of messagePasserStorageRoot) */
export declare const L2_TO_L1_MESSAGE_PASSER: `0x${string}`;
/** v0 output-root version (bytes32 zero) */
export declare const OUTPUT_ROOT_VERSION_V0: `0x${string}`;
/** A canonically ordered account pair (account0 < account1 numerically) */
export interface CanonicalPair {
    account0: `0x${string}`;
    account1: `0x${string}`;
    /** true when the inputs were supplied in (b, a) order and got swapped */
    flipped: boolean;
}
/** Order (a, b) so account0 < account1 numerically.
 *
 *  @throws AzethError INVALID_INPUT if the addresses are equal or malformed.
 */
export declare function canonicalizePair(a: `0x${string}`, b: `0x${string}`): CanonicalPair;
/** Compute the storage slot of `ReputationModule.transferDeltaUSD[account0][account1]`.
 *
 *  Formula (mirrors L2ProofLib.computeTransferDeltaUSDSlot):
 *    innerSlot = keccak256(abi.encode(account0, baseSlot))
 *    slot      = keccak256(abi.encode(account1, innerSlot))
 *  — addresses left-padded to 32 bytes, keys in declared mapping order.
 *
 *  @param baseSlot - The mapping's base slot. Read it at runtime from
 *    `TrustL2Reader.TRANSFER_DELTA_USD_BASE_SLOT()` — never hardcode (the current
 *    deployment uses 6 while the deployed module's variable lives at slot 5; a
 *    reader redeploy will correct this and the SDK picks it up automatically).
 *  @throws AzethError INVALID_INPUT unless account0 < account1 (strict).
 */
export declare function computeTransferDeltaUSDSlot(account0: `0x${string}`, account1: `0x${string}`, baseSlot: bigint): `0x${string}`;
/** Decode a bytes32 storage word as int256 two's-complement
 *  (value > 2^255 - 1 → value - 2^256). */
export declare function decodeInt256Word(word: `0x${string}`): bigint;
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