import { LitElement } from 'lit';
import { default as MdRipple } from '../ripple/ripple';
export declare abstract class BaseButton extends LitElement {
    private _observer;
    static shadowRootOptions: ShadowRootInit;
    protected constructor();
    /**
     * The form associated with the button.
     * Type: String or HTMLFormElement
     */
    form: HTMLFormElement | undefined;
    /**
     * The type of the button.
     */
    type: HTMLButtonElement["type"];
    /**
     * Indicates a loading state for the button.
     */
    loading: boolean;
    /**
     * The href link for the button.
     */
    href: string | undefined;
    /**
     * Indicates whether the button is disabled.
     */
    disabled: boolean;
    /**
     * Tracks whether the button slot has content.
     */
    slotHasContent: boolean;
    /**
     * Whether an icon is slotted into the button.
     */
    hasIcon: boolean;
    buttonOrAnchor: HTMLButtonElement | HTMLAnchorElement | undefined;
    ripple: MdRipple | undefined;
    childrenContent: Node | null | string;
    connectedCallback(): void;
    disconnectedCallback(): void;
    handleClick(event: Event): void;
    handleSlotChange(e: Event): void;
    get assignedNodesList(): Node[];
    manageTextObservedSlot(): void;
    updateChildren(): void;
    firstUpdated(changes: any): void;
}