Copies react-helmet types across so incorrect types can be removed

rewind etc are not valid for this library, forking the react-helmet types into this project

fixes #61

Author: JakeGinnivan

index.d.ts

@@ -1,15 +1,86 @@
 declare module 'react-helmet-async' {
   import * as React from 'react';
-  import { Helmet, HelmetData } from 'react-helmet';
-  export { Helmet };
 
-  export type FilledContext = {
+  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: Array<any>;
+    linkTags: Array<HTMLLinkElement>;
+    metaTags: Array<HTMLMetaElement>;
+    noscriptTags: Array<any>;
+    scriptTags: Array<HTMLScriptElement>;
+    styleTags: Array<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?: Array<any>;
+    script?: Array<any>;
+    style?: Array<any>;
+    title?: string;
+    titleAttributes?: Object;
+    titleTemplate?: string;
+  }
+
+  export class Helmet extends React.Component<HelmetProps> {
+  }
+  
+  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 interface FilledContext {
     helmet: HelmetData;
   };
 
-  type ProviderProps = {
+  interface ProviderProps {
     context?: {};
   };
 
-  export const HelmetProvider: React.ComponentClass<ProviderProps>;
+  export class HelmetProvider extends React.Component<ProviderProps> {
+    static canUseDOM = canUseDOM;
+  }
 }