/**
 * Helpers to enable Immutable compatibility *without* bringing in
 * the 'immutable' package as a dependency.
 */
/**
 * Check if an object is immutable by checking if it has a key specific
 * to the immutable library.
 *
 * @param  {any} object
 * @return {bool}
 */
export declare function isImmutable(object: {}): object is {
    get(k: string): any;
    [k: string]: any;
};
/**
 * Denormalize an immutable entity.
 */
export declare function denormalizeImmutable(schema: any, input: any, delegate: {
    unvisit: any;
}): any;
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