/**
 * Assert function for runtime checks with TypeScript assertion support.
 * @param cond Condition to check.
 * @param message Optional error message.
 * @throws {Error} If condition is false.
 */
export declare function assert(cond: any, message?: string): asserts cond;
export declare function toBuffer(data: Uint8Array): ArrayBufferLike;
export declare function hashBytes(data: Uint8Array): number;
export declare function hashFunction(fn: Function): number;
export declare function bytesEqual(a: Uint8Array, b: Uint8Array): boolean;
export declare function dbGet(txnId: number, key: Uint8Array): Uint8Array | undefined;
export declare function dbPut(txnId: number, key: Uint8Array, value: Uint8Array): void;
export declare function dbDel(txnId: number, key: Uint8Array): void;
/**
 * Regular expression for parsing error messages with paths.
 */
export declare const ERROR_AT: RegExp;
/**
 * Add a path segment to an exception for better error reporting.
 * @param error The (Database)Error to modify.
 * @param path The path segment to add (string or number).
 * @returns The modified DatabaseError.
 */
export declare function addErrorPath<T>(error: T, path: string | number): T;
export declare const logLevel: number;
/** @internal Symbol used to access the underlying model from a proxy */
export declare const TARGET_SYMBOL: unique symbol;