Lint and cleanup code

src/components/languageSwitcher.js

@@ -5,8 +5,8 @@ export default function LanguageSwitcher() {
     const {languages, originalPath} = useI18next();
 
     return (
-        <div class="languageModalInner">
-            <h2>Languages (<a href="#top" class="modalCloseLink">&times;</a>)</h2>
+        <div className="languageModalInner">
+            <h2>Languages (<a href="#top" className="modalCloseLink">&times;</a>)</h2>
             <ul>
                 {languages.map((lng) => (
                     <li key={lng}>

src/components/navigation.js

@@ -1,8 +1,9 @@
 import React from "react"
+import PropTypes from "prop-types"
 import { Trans, Link } from "gatsby-plugin-react-i18next"
 import { graphql, StaticQuery } from 'gatsby'
 
-export default function Navigation({isHome, module}) {
+const Navigation = ({isHome, module}) => {
     return (
         <div className={"topBar" + (isHome ? " homeBar" : "")}>
             <nav className="topBarInner">
@@ -23,4 +24,11 @@ export default function Navigation({isHome, module}) {
             </nav>
         </div>
     );
-}
+}
+
+Navigation.propTypes = {
+    isHome: PropTypes.boolean.isRequired,
+    module: PropTypes.string.isRequired
+  }
+
+export default Navigation;

src/components/seo.js

@@ -65,7 +65,7 @@ function SEO({ description, meta, title }) {
         }
       ].concat(meta)} 
     >
-        <script src="https://kit.fontawesome.com/1377f925e0.js" crossorigin="anonymous"></script>
+        <script src="https://kit.fontawesome.com/1377f925e0.js" crossOrigin="anonymous"></script>
         <link rel="preconnect" href="https://fonts.gstatic.com"/>
         <link href="https://fonts.googleapis.com/css2?family=Anonymous+Pro:wght@400;700&family=Roboto&display=swap" rel="stylesheet"/> 
     </Helmet>