/**
 * State Management Utilities
 * Provides deep-merge and deep-freeze functionality for immutable state management.
 * @module core/state-utils
 */
/**
 * Recursively freeze an object and all its nested properties.
 * @param {Record<string, *>} obj - The object to deeply freeze.
 * @returns {Record<string, *>} The same object, now deeply frozen.
 */
export function deepFreeze(obj: Record<string, any>): Record<string, any>;
/**
 * Perform a deep merge of source into target.
 * @param {Record<string, *>} target - The object to merge into
 * @param {Record<string, *>} source - The object to merge from
 * @returns {Record<string, *>} The mutated target object
 */
export function deepMerge(target: Record<string, any>, source: Record<string, any>): Record<string, any>;
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