/**
 * Copyright (c) Cisco Systems, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */
/**  This mixin check thay each other mixins in the prototype chain are not applied more than once to the final component class.
 * Example:
 * import { DedupeMixin, wasApplied } from "./DedupeMixin";
 *
 * const Mixin = (superclass) => {
 *  if (wasApplied(Mixin, superclass)) { <---- Check that mixin already applied to superclass.
      return superclass;
    }
    class MixinClass extends superclass {
      // MixinClass implementation
    }

    DedupeMixin(Mixin, MixinClass); <---- If mixin not applied to superclass, save it in WeakMap to check prototype chain next time.

    return MixinClass;
 * }
 */
export type AnyFunction<A = any> = (...input: any[]) => A;
export type AnyConstructor<A = HTMLElement> = new (...input: any[]) => A;
export declare const wasApplied: (mixin: AnyFunction, superClass: AnyConstructor) => boolean;
export declare const DedupeMixin: (mixin: AnyFunction, superClass: AnyConstructor) => void;