import { LitElement } from 'lit';
import { AbstractConstructor } from './constructor.js';

export declare abstract class SbbHydrationMixinType {
    /**
     * Returns a Promise that resolves when the element has completed hydration.
     * The Promise value is a boolean that is `true` if the element required hydration
     * and `false` if not.
     *
     * @return A promise of a boolean that resolves to true once the hydration completed.
     */
    get hydrationComplete(): Promise<boolean>;
    /**
     * Called only if Declarative Shadow DOM is detected, during the initialization stage
     * but before the hydration stage.
     * When using server side rendering, this is called in willUpdate.
     */
    protected recoverSsrState?(): void;
    /** Reads and removes an attribute with the given name. Either returns the attributte value or null. */
    protected getAndRemoveAttribute(name: string): string | null;
}
/**
 * This mixin extends a base class with functionality to check if hydration is completed.
 * It also delays slotchange events until hydration is complete.
 *
 * @param base The class to extend.
 * @returns A class extended with the hydration check functionality.
 */
export declare const SbbHydrationMixin: <T extends AbstractConstructor<LitElement>>(base: T) => AbstractConstructor<SbbHydrationMixinType> & T;
//# sourceMappingURL=hydration-mixin.d.ts.map