export declare function toHex(bytes: Uint8Array): string;
/**
 * Convert a Uint8Array, length 32, to 0x-prefixed hex string
 */
export declare function toRootHex(root: Uint8Array): string;
/**
 * Convert a Uint8Array, length 48, to 0x-prefixed hex string
 */
export declare function toPubkeyHex(pubkey: Uint8Array): string;
export declare function fromHex(hex: string): Uint8Array;
export declare function fromHexInto(hex: string, buffer: Uint8Array): void;
type Endianness = "le" | "be";
/**
 * @deprecated Use toHex() instead.
 */
export declare function toHexString(bytes: Uint8Array): string;
/**
 * Return a byte array from a number or BigInt
 */
export declare function intToBytes(value: bigint | number, length: number, endianness?: Endianness): Uint8Array;
/**
 * Convert byte array in LE to integer.
 */
export declare function bytesToInt(value: Uint8Array, endianness?: Endianness): number;
export declare function bigIntToBytes(value: bigint, length: number, endianness?: Endianness): Uint8Array;
export declare function bytesToBigInt(value: Uint8Array, endianness?: Endianness): bigint;
export declare function xor(a: Uint8Array, b: Uint8Array): Uint8Array;
/** Count set bits in a Uint8Array without allocation (Brian Kernighan's algorithm) */
export declare function bitCount(arr: Uint8Array): number;
/**
 * Compare two byte arrays for equality.
 * Note: In Node.js environment, the implementation in nodejs.ts uses Buffer.compare
 * which is significantly faster due to native code.
 */
export declare function byteArrayEquals(a: Uint8Array, b: Uint8Array): boolean;
export {};
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