fix: make context prop optional in Provider

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-helmet-async",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "Thread-safe Helmet for React 16+ and friends",
   "sideEffects": false,
   "main": "./lib/index.js",

src/HelmetData.ts

@@ -17,9 +17,15 @@ interface HelmetDataContext {
   helmet: HelmetServerState;
 }
 
+export const isDocument = !!(
+  typeof window !== 'undefined' &&
+  window.document &&
+  window.document.createElement
+);
+
 export default class HelmetData implements HelmetDataType {
   instances = [];
-  canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);
+  canUseDOM = isDocument;
   context: HelmetDataContext;
 
   value = {

src/Provider.tsx

@@ -1,23 +1,21 @@
 import type { PropsWithChildren } from 'react';
 import React, { Component } from 'react';
 
-import HelmetData from './HelmetData';
+import HelmetData, { isDocument } from './HelmetData';
 import type { HelmetServerState } from './types';
 
 const defaultValue = {};
 
 export const Context = React.createContext(defaultValue);
 
 interface ProviderProps {
-  context: {
+  context?: {
     helmet: HelmetServerState;
   };
 }
 
-const canUseDOM = typeof document !== 'undefined';
-
 export default class HelmetProvider extends Component<PropsWithChildren<ProviderProps>> {
-  static canUseDOM = canUseDOM;
+  static canUseDOM = isDocument;
 
   helmetData: HelmetData;