import { TextAreaBase as _TextareaBase } from '@material/mwc-textarea/mwc-textarea-base';
import { FormSubmitController } from '@shoelace-style/shoelace/dist/internal/form';
export declare class TextareaBase extends _TextareaBase {
    protected setFormData(): void;
    formSubmitController: FormSubmitController;
    value: string;
    label: string;
    placeholder: string;
    rows: number;
    cols: number;
    fullwidth: boolean;
    endAligned: boolean;
    disabled: boolean;
    required: boolean;
    maxLength: number;
    outlined: boolean;
    helper: string;
    helperPersistent: boolean;
    defaultValue: string;
    constructor();
    handleInputChange(): void;
}