🤖 Merge PR DefinitelyTyped#46509 update(react-helmet): 6.1 ES exports…

… changes by @peterblazejewicz

This commit updates definition by:
- adding support for 6.1 change introducing named and default exports
  support (this fixes errorrs like ` JSX element type 'Helmet' does not
  have any construct or call signatures.`
- minor version bump
- maintainer added

nfl/react-helmet#547
https://github.com/nfl/react-helmet/releases/tag/6.1.0

Thanks!

types/react-helmet/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for react-helmet 6.0
+// 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>
@@ -8,6 +8,7 @@
 //                 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
 // TypeScript Version: 2.8
 
@@ -53,13 +54,18 @@ export interface HelmetProps {
     titleTemplate?: string;
 }
 
-export class Helmet extends React.Component<HelmetProps> {
+declare class Helmet extends React.Component<HelmetProps> {
     static peek(): HelmetData;
     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;

types/react-helmet/react-helmet-tests.tsx

@@ -1,5 +1,6 @@
 import * as React from "react";
-import { Helmet, HelmetData } from "react-helmet";
+import { Helmet as HelmedNamedExport, HelmetData } from "react-helmet";
+import Helmet from 'react-helmet';
 
 const Application = () =>
     <div className="application">