import { FunctionalComponent } from "preact";
import { Ref } from "preact/hooks";
export declare let warned: boolean;
interface OpenGraphBase {
    title?: string;
    description?: string;
    url?: string;
    locale?: string;
    altLocales?: string[];
    siteName?: string;
}
declare type OpenGraph = OpenGraphArticle | OpenGraphProfile | OpenGraphBook | OpenGraphWebsite;
interface OpenGraphProfile extends OpenGraphBase {
    type?: "profile";
    firstName?: string;
    lastName?: string;
    username?: string;
    gender?: "male" | "female";
}
interface OpenGraphBook extends OpenGraphBase {
    type?: "book";
    authors?: string[];
    isbn?: string;
    releaseDate?: Date;
    tags?: string[];
}
interface OpenGraphArticle extends OpenGraphBase {
    type?: "article";
    publishedTime?: Date;
    modifiedTime?: Date;
    expirationTime?: Date;
    authors?: string[];
    section?: string;
    tags?: string[];
}
interface OpenGraphWebsite extends OpenGraphBase {
    type?: "website";
}
interface SEO {
    robots?: {
        noindex?: boolean;
        nofollow?: boolean;
    };
    title?: string;
    description?: string;
    images?: {
        src: string;
        alt?: string;
        width?: number;
        height?: number;
    }[];
    videos?: {
        src: string;
        width?: number;
        height?: number;
    }[];
    audio?: {
        src: string;
    }[];
    canonical?: string;
    facebook?: {
        appId?: string;
    };
    twitter?: {
        site?: string;
        handle?: string;
        card?: "summary" | "summary_large_image" | "app" | "player";
    };
    openGraph?: OpenGraph;
}
export declare const __SeoContext: import("preact").Context<{
    seo: Ref<SEO>;
}>;
export declare const Head: FunctionalComponent<any>;
export declare const seo: {
    robots: FunctionalComponent<{
        children?: never;
    } & {
        noindex?: boolean;
        nofollow?: boolean;
    }>;
    title: FunctionalComponent<{}>;
    description: FunctionalComponent<{}>;
    image: FunctionalComponent<{
        children?: never;
    } & {
        src: string;
        alt?: string;
        width?: number;
        height?: number;
    }>;
    video: FunctionalComponent<{
        children?: never;
    } & {
        src: string;
        width?: number;
        height?: number;
    }>;
    audio: FunctionalComponent<{
        children?: never;
    } & {
        src: string;
    }>;
    canonical: FunctionalComponent<{}>;
    twitter: FunctionalComponent<{
        site?: string;
        handle?: string;
        card?: "summary" | "summary_large_image" | "app" | "player";
    }>;
    facebook: FunctionalComponent<{
        appId?: string;
    }>;
    openGraph: FunctionalComponent<OpenGraph>;
};
export {};