/**
 * Custom JSON encoder to assist in the serialization of a wide range of objects.
 */
export declare class EventSerializer {
    private seen;
    /**
     * Serialize a value to its JSON-compatible representation.
     * @param obj - The object to serialize.
     * @returns The serialized representation.
     */
    default(obj: any): any;
    /**
     * Encode an object to a JSON string.
     * @param obj - The object to encode.
     * @returns The JSON string representation.
     */
    encode(obj: any): string;
    /**
     * Serialize a datetime to ISO format with timezone support.
     * @param date - The Date object to serialize.
     * @returns ISO format string with timezone.
     */
    private serializeDatetime;
    /**
     * Check if a number is within JavaScript's safe integer range.
     * @param value - The integer value to check.
     * @returns True if the value is safe, false otherwise.
     */
    private isJsSafeInteger;
}
/**
 * Safely serialize data to a JSON string.
 * @param inputData - The data to serialize.
 * @returns A JSON string representation of the data.
 */
export declare function serializeToStr(inputData: unknown): string;
/**
 * Safely stringifies data to JSON, handling circular references by replacing
 * cycles with a placeholder string.
 *
 * @param obj - The data to stringify.
 * @param space - (Optional) Number of spaces for pretty-printing (same as JSON.stringify).
 * @returns A JSON string representation, or a fallback string on failure.
 */
export declare function safeStringify(obj: unknown, space?: number): string;