export interface FormControlInstance extends HTMLElement {
    _internals: ElementInternals;
    formAssociated: true;
    form: HTMLFormElement;
    name: string;
    type: string;
    defaultValue: string;
    validity: ValidityState;
    validationMessage: string;
    willValidate: boolean;
    valueAsNumber: number;
    composedLabel: string;
    checked?: boolean;
    readOnly: boolean;
    required: boolean;
    noValidate: boolean;
    disabled: boolean;
    value?: FormControlValue;
    min: number | string | null;
    max: number | string | null;
    pattern?: string;
    placeholder?: string;
    minLength?: number;
    maxLength?: number;
    step?: number;
    multiple?: boolean;
    autocomplete?: string;
    size?: number;
    formNoValidate?: boolean;
    formAction?: string;
    formMethod?: string;
    formTarget?: string;
    dirName?: string;
    list?: HTMLDataListElement | null;
    selectionStart?: number | null;
    selectionEnd?: number | null;
    selectionDirection?: 'forward' | 'backward' | 'none';
    reset(): void;
    focus(): void;
    select(): void;
    setSelectionRange(start: number, end: number, direction?: 'forward' | 'backward' | 'none'): void;
    setRangeText(replacement: string, start?: number, end?: number, selectMode?: 'select' | 'start' | 'end' | 'preserve'): void;
    updateValue(value: FormControlValue): void;
    checkValidity(): boolean;
    reportValidity(): boolean;
    setValidity(validity: Partial<ValidityState>, message?: string): void;
    setCustomValidity(message: string): void;
    setFormValue(value: string | File | FormData | null): void;
    _onChange(e: InputEvent, config?: {
        valueType: 'string' | 'number';
    }): void;
    _onInput(e: InputEvent, config?: {
        valueType: 'string' | 'number';
    }): void;
}
export interface FormControlMixin {
    new (...args: any[]): FormControlInstance;
    formAssociated: boolean;
    readonly observedAttributes: string[];
}
export type FormControlValue = string | number | File | File[] | FormData | null | Record<string, unknown>;
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 declare function FormControlMixin<TBase extends Constructor, T extends FormControlValue>(SuperClass: TBase): TBase & FormControlMixin;
export {};