import * as dagCbor from "@ipld/dag-cbor";
import { CID } from "multiformats";
import { type Block } from "multiformats/block";
import * as raw from "multiformats/codecs/raw";
import type { MultihashHasher } from "multiformats/hashes/interface";
export declare const defaultHasher: import("multiformats/hashes/hasher").Hasher<"sha2-256", 18>;
export declare const codecCodes: {
    113: typeof dagCbor;
    85: typeof raw;
};
export declare const codecMap: {
    raw: typeof raw;
    "dag-cbor": typeof dagCbor;
};
export type VerifyBlockBytesOptions = {
    hasher?: MultihashHasher<number>;
    /**
     * The codec expected by the caller. Only its multicodec code is consulted;
     * verification deliberately does not decode untrusted block bytes.
     */
    codec?: {
        code: number;
    };
};
export declare const cidifyString: (str: string) => CID;
export declare const stringifyCid: (cid: any) => string;
/**
 * Verify that bytes match a CID without decoding their logical value.
 *
 * This is the appropriate boundary for transports and block stores that only
 * move opaque bytes. In particular, it prevents a mismatching DAG-CBOR payload
 * from allocating a decoded object graph before its digest is rejected.
 */
export declare const verifyBlockBytes: (expectedCID: CID | string, bytes: Uint8Array, options?: VerifyBlockBytesOptions) => Promise<CID>;
export declare const checkDecodeBlock: (expectedCID: CID | string, bytes: Uint8Array, options: {
    hasher?: any;
    codec?: any;
}) => Promise<Block<any, any, any, any>>;
export declare const getBlockValue: <T>(block: Block<T, any, any, any>, links?: string[]) => Promise<T>;
export declare const prepareBlockWrite: (value: any, codec: any, links?: string[]) => any;
export declare const createBlock: (value: any, format: string, options?: {
    hasher?: MultihashHasher<number>;
    links?: string[];
}) => Promise<Block<any, any, any, any>>;
export declare const calculateRawCid: (bytes: Uint8Array) => Promise<{
    block: Block<Uint8Array<ArrayBufferLike>, 85, number, 1>;
    cid: string;
}>;
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