import { type LeafHasher } from '../hasher/common.ts';
import type { CCIPVersion, WithLogger } from '../types.ts';
/**
 * Creates a leaf hasher for v1.2/v1.5 EVM CCIP messages.
 * @param sourceChainSelector - Source chain selector.
 * @param destChainSelector - Destination chain selector.
 * @param onRamp - OnRamp contract address.
 * @returns Leaf hasher function.
 */
export declare function getV12LeafHasher(sourceChainSelector: bigint, destChainSelector: bigint, onRamp: string): LeafHasher<typeof CCIPVersion.V1_2 | typeof CCIPVersion.V1_5>;
/**
 * Creates a leaf hasher for v1.6 EVM CCIP messages.
 * @param sourceChainSelector - Source chain selector.
 * @param destChainSelector - Destination chain selector.
 * @param onRamp - OnRamp contract address.
 * @returns Leaf hasher function.
 */
export declare function getV16LeafHasher(sourceChainSelector: bigint, destChainSelector: bigint, onRamp: string, { logger }?: WithLogger): LeafHasher<typeof CCIPVersion.V1_6>;
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