/// <reference types="react" />
import { BaseComponent } from '../../Utilities';
import { IMessageBarProps } from './MessageBar.types';
export interface IMessageBarState {
    labelId?: string;
    showContent?: boolean;
    expandSingleLine?: boolean;
}
export declare class MessageBarBase extends BaseComponent<IMessageBarProps, IMessageBarState> {
    static defaultProps: IMessageBarProps;
    private ICON_MAP;
    private _classNames;
    constructor(props: IMessageBarProps);
    render(): JSX.Element;
    private _getActionsDiv();
    private _getDismissDiv();
    private _getDismissSingleLine();
    private _getExpandSingleLine();
    private _getIconSpan();
    private _renderMultiLine();
    private _renderSingleLine();
    private _renderInnerText();
    private _getClassNames();
    private _getAnnouncementPriority();
    private _onClick;
}