/**
 * A robust object stringification system that handles circular references and complex object structures.
 * This module provides two main functions:
 * - stringifyObject: For complex object serialization with circular reference handling
 * - stringify: For general-purpose value to string conversion
 *
 * Key Features:
 * - Deterministic output with sorted object keys
 * - Circular reference detection and handling
 * - Support for special types (Map, Date, Symbol, etc.)
 * - Memory efficient with WeakMap for reference tracking
 */
/**
 * Converts any JavaScript value to its string representation.
 * Provides a consistent way to convert values to strings across different types.
 *
 * Conversion Rules:
 * | Type          | Example Input      | Output              |
 * |---------------|-------------------|---------------------|
 * | null          | null              | ''                  |
 * | undefined     | undefined         | ''                  |
 * | string        | 'hello'           | 'hello'             |
 * | number        | 42                | '42'                |
 * | boolean       | true              | 'true'              |
 * | object        | {x: 1}            | '{x:1}'             |
 * | array         | [1, 2]            | '[1,2]'             |
 * | function      | () => {}          | 'function...'       |
 * | symbol        | Symbol('key')     | 'Symbol(key)'       |
 * | bigint        | 42n               | '42'                |
 *
 * @example
 * ```typescript
 * // Primitive values
 * stringify('hello');         // 'hello'
 * stringify(42);             // '42'
 * stringify(true);           // 'true'
 * stringify(null);           // ''
 *
 * // Objects and arrays
 * stringify({ x: 1 });       // '{x:1}'
 * stringify([1, 2, 3]);      // '[1,2,3]'
 *
 * // Complex objects
 * const user = {
 *   name: 'John',
 *   info: { age: 30 }
 * };
 * stringify(user);  // '{info:{age:30},name:"John"}'
 *
 * // Special types
 * stringify(Symbol('key'));  // 'Symbol(key)'
 * stringify(42n);           // '42'
 * stringify(() => {});      // 'function...'
 * ```
 *
 * @param obj Any JavaScript value to convert to string
 * @returns String representation of the value
 */
export declare function stringify(obj: any): string;
/**
 * Generates a hash code for any JavaScript value.
 * Handles all primitive types and objects by converting them to strings first.
 * Uses the djb2 algorithm for string hashing.
 *
 * Hash values for different types:
 * - null/undefined: -1
 * - string: djb2 hash of the string
 * - number: the number itself
 * - boolean: 1 for true, 0 for false
 * - object: djb2 hash of its stringified representation
 * - function: djb2 hash of its string representation
 * - symbol: djb2 hash of its string representation
 * - bigint: djb2 hash of its string representation
 *
 * @param obj Any JavaScript value to hash
 * @returns A number representing the hash code
 *
 * @example
 * ```typescript
 * // Primitive values
 * hash(null);           // -1
 * hash(true);          // 1
 * hash(42);            // 42
 * hash("hello");       // [32-bit hash value]
 *
 * // Objects
 * hash({x: 1});        // [32-bit hash value]
 * hash([1, 2, 3]);     // [32-bit hash value]
 *
 * // Special values
 * hash(Symbol("key")); // [32-bit hash value]
 * hash(() => {});      // [32-bit hash value]
 * ```
 */
export declare function hash(obj: any): number;