import React, { PureComponent } from 'react';
import { PickDefaultProps } from '../utils-typescript';
declare type HeadlineType = 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6';
interface HeadlineTheme {
    readonly 'heading': string;
}
export interface HeadlineProps extends React.HTMLAttributes<HTMLHeadingElement> {
    /**
     * The contents to be rendered.
     */
    readonly children: React.ReactNode;
    /**
     * The semantic tag type of the headline.
     */
    readonly type: HeadlineType;
    /**
     * An optional `className` to attach to the wrapper.
     */
    readonly className?: string;
    /**
     * An optional css theme to be injected.
     */
    readonly theme?: HeadlineTheme;
}
declare type DefaultProps = PickDefaultProps<HeadlineProps, 'type'>;
export declare const defaultProps: DefaultProps;
declare class Headline extends PureComponent<HeadlineProps> {
    static readonly defaultProps: Readonly<Required<Pick<HeadlineProps, "type">>>;
    render(): JSX.Element;
}
export default Headline;