import React from 'react';
interface BaseMetaProps {
    charset?: string;
    content?: string;
    httpEquiv?: 'content-type' | 'default-style' | 'refresh' | 'x-ua-compatible' | 'content-security-policy';
    lang?: string;
    scheme?: string;
    media?: string;
}
interface NameMetaProps extends BaseMetaProps {
    name: 'description' | 'keywords' | 'author' | 'viewport' | 'robots' | 'generator' | 'theme-color' | 'application-name' | 'color-scheme' | 'referrer' | string;
    property?: never;
    itemProp?: never;
}
interface PropertyMetaProps extends BaseMetaProps {
    property: string;
    name?: never;
    itemProp?: never;
}
interface ItemPropMetaProps extends BaseMetaProps {
    itemProp: string;
    itemType?: string;
    itemId?: string;
    name?: never;
    property?: never;
    httpEquiv?: never;
}
interface HttpEquivMetaProps extends BaseMetaProps {
    httpEquiv: 'content-type' | 'default-style' | 'refresh' | 'x-ua-compatible' | 'content-security-policy';
    content: string;
    name?: never;
    property?: never;
    itemProp?: never;
}
interface CharsetOnlyProps {
    charset: 'utf-8' | string;
    content?: never;
    name?: never;
    property?: never;
    itemProp?: never;
    httpEquiv?: never;
    lang?: never;
    scheme?: never;
    media?: never;
}
type MetaProps = NameMetaProps | PropertyMetaProps | ItemPropMetaProps | HttpEquivMetaProps | CharsetOnlyProps;
export declare function Meta(props: MetaProps): React.JSX.Element | null;
export declare function MetaCharset({ charset }?: {
    charset?: string;
}): React.JSX.Element;
export declare function MetaDescription({ description }: {
    description: string;
}): React.JSX.Element;
export declare function MetaKeywords({ keywords }: {
    keywords: string | string[];
}): React.JSX.Element;
export declare function MetaAuthor({ author }: {
    author: string;
}): React.JSX.Element;
export declare function MetaThemeColor({ color, media }: {
    color: string;
    media?: string;
}): React.JSX.Element;
export declare function MetaViewport({ width, initialScale, maximumScale, userScalable }: {
    width?: string | number;
    initialScale?: number;
    maximumScale?: number;
    userScalable?: boolean;
}): React.JSX.Element;
export declare function MetaHttpEquiv({ httpEquiv, content }: {
    httpEquiv: 'content-type' | 'default-style' | 'refresh' | 'x-ua-compatible' | 'content-security-policy';
    content: string;
}): React.JSX.Element;
export declare function MetaOpenGraph({ type, title, description, image, url, siteName }: {
    type?: 'website' | 'article' | 'product' | string;
    title?: string;
    description?: string;
    image?: string;
    url?: string;
    siteName?: string;
}): React.JSX.Element;
export declare function MetaTwitterCard({ card, site, creator, title, description, image }: {
    card?: 'summary' | 'summary_large_image' | 'app' | 'player';
    site?: string;
    creator?: string;
    title?: string;
    description?: string;
    image?: string;
}): React.JSX.Element;
export declare function MetaRobots({ index, follow, noarchive, nosnippet }: {
    index?: boolean;
    follow?: boolean;
    noarchive?: boolean;
    nosnippet?: boolean;
}): React.JSX.Element;
export {};