feat: feed feature, typescript, remove google, fix errs & warns

src/pages/404.tsx

@@ -1,5 +1,4 @@
-import React from 'react'
-// import { Link } from 'gatsby'
+import * as React from 'react'
 
 import Layout from '../components/layout'
 import Seo from '../components/seo'
@@ -7,7 +6,13 @@ import Seo from '../components/seo'
 import { Section } from '../components/shared'
 import { SideBar } from '../templates/sidebar'
 
-const NotFound = ({ data, location, pageContext }) => (
+import type { PageProps } from 'gatsby'
+import type { PageContext } from '../types'
+
+const NotFound: React.FC<PageProps<unknown, PageContext>> = ({
+  location,
+  pageContext
+}) => (
   <Layout location={location} heroSection={false}>
     <Seo title="Page Not Found" />
     <Section color="black" bgColor="white" bottomArrow={false}>