export declare const uintLen = 8;
/**
 * Encode a key for the db write/read, Prepend a bucket to a key
 *
 * The encoding of key is very important step that can cause failure of proper indexing and querying of data
 *
 * We are using LevelDB which have pluggable comparator support, so you can decide how to
 * compare keys. But for NodeJS binding only default comparison algorithm is supported which
 * uses lexicographical comparison of the raw bytes of the keys
 *
 * It is important to use **helpers implemented here** to encode db keys so that key comparison properly work.
 */
export declare function encodeKey(bucket: number, key: Uint8Array | string | number | bigint): Uint8Array;
export declare function encodeNumberForDbKey(value: number, byteSize: number): Uint8Array;
export declare function decodeNumberForDbKey(value: Uint8Array, byteSize: number): number;
export declare function encodeStringForDbKey(value: string): Uint8Array;
export declare function decodeStringForDbKey(value: Uint8Array): string;
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