import { FormControlValue } from '../internal/types.js';
import { FormControlMixinInstance } from './index.js';
type Constructor = (new (...args: any[]) => HTMLElement & {
    connectedCallback?(): void;
    disconnectedCallback?(): void;
    attributeChangedCallback?(name: string, oldValue: string | null, newValue: string | null): void;
    requestUpdate?(name?: string, oldValue?: unknown): void;
}) & {
    observedAttributes?: string[];
};
export type CheckboxFormControlValue = Extract<FormControlValue, string>;
export interface CheckboxFormControlMixinInstance extends FormControlMixinInstance<CheckboxFormControlValue> {
    /**
     * Shows whether the checkbox currently has a checked value.
     * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/checkbox#checked
     * @attr checked
     * @reflect
     */
    checked: boolean;
    /**
     * Indicates whether the checkbox is visually indeterminate.
     * https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/indeterminate
     * @attr indeterminate
     * @reflect
     */
    indeterminate: boolean;
    updateCheckedState(): void;
    /**
     * Toggles the checked state.
     */
    toggle(): void;
}
export type CheckboxFormControlMixinReturn<TBase extends Constructor> = (new (...args: ConstructorParameters<TBase>) => InstanceType<TBase> & CheckboxFormControlMixinInstance) & {
    formAssociated: boolean;
    observedAttributes: string[];
} & Omit<TBase, 'prototype'>;
/**
 * @description A mixin that adds native checkbox-style form control behavior.
 */
export declare function CheckboxFormControlMixin<TBase extends Constructor>(SuperClass: TBase): CheckboxFormControlMixinReturn<TBase>;
export {};