import type { DeepReadonly } from './deep-readonly';
/**
 * Recursively freezes an object and all of its properties. This prevents the
 * object from being modified at runtime. When the JS runtime is running in
 * strict mode, any attempts to modify a frozen object will throw an error.
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
 * @param obj The object to freeze.
 */
export declare function deepFreeze<T extends object>(obj: T): DeepReadonly<T>;