import { type AttributeReactiveClass } from '../../element-reactive/index.js';
export declare class TextareaBaseAttributes implements InstanceType<AttributeReactiveClass<typeof HTMLElement>> {
    #private;
    static observedAttributes: string[];
    _handlerConfirmType: (this: void, newVal: string | null) => void;
    _handlerMaxlength: (this: void, newVal: string | null) => void;
    _handleReadonly: (this: void, newVal: string | null) => void;
    _handleSpellCheck: (this: void, newVal: string | null) => void;
    _handleShowSoftInputOnfocus: (this: void, newVal: string | null) => void;
    constructor(dom: HTMLElement);
}