/**
 * Type safe JSON
 */
export declare type Json = string | number | boolean | null | undefined | JsonObject | JsonArray | IJsonSerializable;
/**
 * Type safe JSON object
 */
export declare type JsonObject = {
    readonly [index: string]: Json;
};
/**
 * Type safe JSON array
 */
export interface JsonArray extends ReadonlyArray<Json> {
}
/**
 * Convertible into a JSON string.
 */
export interface IJsonSerializable {
    /**
     * @param key If this object is a property value, the property name, if it is in an array, the index in the array, as a string, otherwise an empty string.
     */
    toJSON(key?: string | number): Json;
}
export declare type Reviver<T> = (this: T, key: string, value: any) => any;
export declare type Replacer<T> = (this: T, key: string, value: any) => any;