import type { LeafHasher } from '../hasher/common.ts';
import { CCIPVersion } from '../types.ts';
/**
 * Creates a leaf hasher for TON messages.
 *
 * @param lane - Lane configuration containing sourceChainSelector, destChainSelector,
 *   onRamp (as hex string), and version (only v1.6 supported for TON).
 * @returns A LeafHasher function that computes message hashes for TON.
 */
export declare function getTONLeafHasher<V extends CCIPVersion = CCIPVersion>({ sourceChainSelector, destChainSelector, onRamp, version, }: {
    sourceChainSelector: bigint;
    destChainSelector: bigint;
    onRamp: string;
    version: V;
}): LeafHasher<V>;
/**
 * Creates a hash that uniquely identifies the message lane configuration
 * (source chain, destination chain, and onRamp address).
 * Following the TON implementation from chainlink-ton repo.
 *
 * @param sourceChainSelector - Source chain selector.
 * @param destChainSelector - Destination chain selector.
 * @param onRamp - OnRamp address as hex string.
 * @returns SHA256 hash of the metadata as hex string.
 */
export declare const hashTONMetadata: (sourceChainSelector: bigint, destChainSelector: bigint, onRamp: string) => string;
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