import * as class_variance_authority_types from 'class-variance-authority/types';
import { VariantProps } from 'class-variance-authority';
import React__default from 'react';

declare const mastheadColors: {
    dark: string;
    light: string;
    white: string;
    grey: string;
};
type MastheadColor = keyof typeof mastheadColors;
declare const mastheadVariants: (props?: ({
    color?: "white" | "grey" | "light" | "dark" | null | undefined;
} & class_variance_authority_types.ClassProp) | undefined) => string;
declare const mastheadContainerVariants: (props?: ({
    container?: "fluid" | "contained" | null | undefined;
} & class_variance_authority_types.ClassProp) | undefined) => string;
type MastheadProps = React__default.ComponentPropsWithoutRef<'div'> & VariantProps<typeof mastheadVariants> & VariantProps<typeof mastheadContainerVariants> & {
    /** Classes applied to the inner width-constraining wrapper. */
    containerClassName?: string;
    ref?: React__default.Ref<HTMLDivElement>;
};
/**
 * The "A NSW Government website" strip shown above the site header on every
 * NSW Government page. Successor to the legacy `.nsw-masthead`.
 *
 * - `color` selects a WCAG 2.2 AAA text/background pair (`dark` matches the
 *   legacy default, `light` matches the legacy `--light` theme).
 * - `container` selects the inner wrapper layout: `fluid` (full-bleed,
 *   nswds-app parity) or `contained` (centred 1200px column, legacy
 *   `nsw-container` parity). Fine-tune either with the `--masthead-max-width`
 *   and `--masthead-padding-x` custom properties.
 * - Children replace the default message; pass a `SkipLinks` sibling before
 *   the Masthead for bypass-blocks support.
 *
 * The default `id="nsw-masthead"` is kept for compatibility with existing
 * shells that target it (override via the `id` prop).
 */
declare function Masthead({ className, color, container, containerClassName, children, ref, ...props }: MastheadProps): React__default.JSX.Element;

export { Masthead, type MastheadColor, type MastheadProps, mastheadContainerVariants, mastheadVariants };