import type { Hash } from "./types.js";
/**
 * Initialize the xxhash WASM instance. After this resolves, the synchronous
 * hashing functions {@link computeHashSync} and {@link computeSelfHashSync}
 * may be called.
 */
export declare function initHasher(): Promise<void>;
/**
 * Synchronous variant of {@link computeHash}. Must only be called after
 * {@link initHasher} has resolved at least once; throws otherwise.
 */
export declare function computeHashSync(typeHash: Hash, payload: unknown): Hash;
/**
 * Synchronous variant of {@link computeSelfHash}. Must only be called after
 * {@link initHasher} has resolved at least once; throws otherwise.
 */
export declare function computeSelfHashSync(payload: unknown): Hash;
/**
 * hash = XXH64(utf8(typeHash) ++ CBOR_deterministic(payload))
 * Used for all normal nodes.
 */
export declare function computeHash(typeHash: Hash, payload: unknown): Promise<Hash>;
/**
 * hash = XXH64(CBOR_deterministic(payload))
 * Used for self-referencing (bootstrap) nodes where type = hash.
 */
export declare function computeSelfHash(payload: unknown): Promise<Hash>;
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