import { Element as CustomElement } from "./element";
import { WcSlot } from "./slot";
export type SlotChanges = {
    /**
     * List of direct children of the custom element.
     */
    readonly added: ReadonlyArray<WcSlot>;
    /**
     * List of children that were removed from the custom element.
     */
    readonly removed: ReadonlyArray<WcSlot>;
    /**
     * List of direct children of the custom element which content has
     * changed.
     */
    readonly contentChanged: ReadonlyArray<WcSlot>;
    /**
     * List of direct children of the custom element which attributes
     * have changed.
     */
    readonly attributeChanged: ReadonlyArray<WcSlot>;
};
export type FinalChanges = SlotChanges;
export type OnSlotChangeCallback = (changes: SlotChanges) => void;
export type SlottedOptions = {
    filter?: string | ((elem: WcSlot) => boolean);
    /**
     * Callback that allows to decide whether the custom element should
     * re-render on given slot changes.
     */
    shouldRequestUpdate?: (current: WcSlot[], changes: SlotChanges) => boolean;
};
export declare function Slotted(opts?: SlottedOptions): <E extends CustomElement, S extends WcSlot>(accessor: ClassAccessorDecoratorTarget<E, S[]>, context: ClassAccessorDecoratorContext<E, S[]>) => ClassAccessorDecoratorResult<E, S[]>;