/**
 * A JSON-based protocol that allows stringification and parsing of ECMAScript
 * maps and sets, in addition to everything else that's valid ECMAScript. Freddy
 * is way less universal than JSON, but that is the price for at least allowing
 * the exchange of maps and sets between ECMAScript environments. Use this
 * module by importing from `@sirpepe/shed/FRDY`.
 */
export declare function replacer(_: string, value: unknown): any;
export declare function stringify(input: unknown, space?: string | number): string;
export declare function reviver(_: string, value: unknown): any;
export declare function parse(input: string): any;