export declare const SCOPE_LIMIT_BYTES: number;
export declare const VALUE_LIMIT_BYTES: number;
export declare const KEY_LIMIT_BYTES = 1024;
export declare const TTL_MAX_SECONDS: number;
export declare const MGET_LIMIT = 100;
export declare const VALID_KEY: RegExp;
export declare function validateKey(key: string): void;
export declare function validateTtl(ttl: number): void;
/**
 * JSON-encode a value for storage, converting every serialization
 * failure into the library's typed error. `JSON.stringify` returns
 * the VALUE `undefined` (not a string) for top-level `undefined`,
 * functions, and symbols, and throws natively for circular
 * structures and `BigInt` — none of which may escape as a bare
 * `TypeError` (the error contract promises `GuueyStateError`
 * subclasses from every failable operation).
 */
export declare function encodeValue(key: string, value: unknown): string;
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