@types/react-helmet/index.d.ts

// Type definitions for react-helmet 6.1
// Project: https://github.com/nfl/react-helmet
// Definitions by: Evan Bremer <https://github.com/evanbb>
//                 Isman Usoh <https://github.com/isman-usoh>
//                 François Nguyen <https://github.com/lith-light-g>
//                 Kok Sam <https://github.com/sammkj>
//                 Yui T. <https://github.com/yuit>
//                 Yamagishi Kazutoshi <https://github.com/ykzts>
//                 Justin Hall <https://github.com/wKovacs64>
//                 Andriy2 <https://github.com/Andriy2>
//                 Piotr Błażejewicz <https://github.com/peterblazejewicz>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

import * as React from "react";

interface OtherElementAttributes {
    [key: string]: string | number | boolean | null | undefined;
}

type HtmlProps = JSX.IntrinsicElements["html"] & OtherElementAttributes;

type BodyProps = JSX.IntrinsicElements["body"] & OtherElementAttributes;

type LinkProps = JSX.IntrinsicElements["link"];

type MetaProps = JSX.IntrinsicElements["meta"];

export interface HelmetTags {
    baseTag: any[];
    linkTags: HTMLLinkElement[];
    metaTags: HTMLMetaElement[];
    noscriptTags: any[];
    scriptTags: HTMLScriptElement[];
    styleTags: HTMLStyleElement[];
}

export interface HelmetProps {
    async?: boolean;
    base?: any;
    bodyAttributes?: BodyProps;
    defaultTitle?: string;
    defer?: boolean;
    encodeSpecialCharacters?: boolean;
    htmlAttributes?: HtmlProps;
    onChangeClientState?: (newState: any, addedTags: HelmetTags, removedTags: HelmetTags) => void;
    link?: LinkProps[];
    meta?: MetaProps[];
    noscript?: any[];
    script?: any[];
    style?: any[];
    title?: string;
    titleAttributes?: object;
    titleTemplate?: string;
}

/**
 * Used by Helmet.peek()
 */
export type HelmetPropsToState = HelmetTags &
    Pick<
        HelmetProps,
        "bodyAttributes" | "defer" | "htmlAttributes" | "onChangeClientState" | "title" | "titleAttributes"
    > & {
        encode: Required<HelmetProps["encodeSpecialCharacters"]>;
    };

declare class Helmet extends React.Component<HelmetProps> {
    static peek(): HelmetPropsToState;
    static rewind(): HelmetData;
    static renderStatic(): HelmetData;
    static canUseDOM: boolean;
}

declare const HelmetExport: typeof Helmet;

export { HelmetExport as Helmet };
export default HelmetExport;

export interface HelmetData {
    base: HelmetDatum;
    bodyAttributes: HelmetHTMLBodyDatum;
    htmlAttributes: HelmetHTMLElementDatum;
    link: HelmetDatum;
    meta: HelmetDatum;
    noscript: HelmetDatum;
    script: HelmetDatum;
    style: HelmetDatum;
    title: HelmetDatum;
    titleAttributes: HelmetDatum;
}

export interface HelmetDatum {
    toString(): string;
    toComponent(): React.Component<any>;
}

export interface HelmetHTMLBodyDatum {
    toString(): string;
    toComponent(): React.HTMLAttributes<HTMLBodyElement>;
}

export interface HelmetHTMLElementDatum {
    toString(): string;
    toComponent(): React.HTMLAttributes<HTMLHtmlElement>;
}

export const canUseDOM: boolean;