import { KeyedOptional } from '../types/KeyedOptional';
import { MaskOptions } from './maskOptions';
/**
 * Get valid masks for an array of objects based on a key.  Allows the user to pass in an array of base and mask objects and get back only valid overrides (values not set to default and properties allowed to be changed).
 * @param bases The array of default objects to compare against.  If the mask is the same value it will not be returned.
 * @param masks The array of mask objects to evaluate and pull the valid properties from.
 * @param key The key used to align the objects between the base and mask array.
 * @param mutableProperties The properties that are allowed to be overridden.  If the property is not in this list it will not be returned.
 * @param options MaskOptions that can be set to control the allowed types
 * @returns An array of masks with the valid overridden properties.  If the object has no valid modified properties a blank object is returned.
 */
export declare function getMasks<T, K extends keyof T>(bases: T[], masks: T[], key: K, mutableProperties: string[], // Couldn't use K for nested properties as we need property1.property2 to work
options?: MaskOptions): KeyedOptional<T, K>[];