[Beta] Add some types (#4728)

* [Beta] Optimize some performance

* Unnecessary image optimization

* Unused optimizeFonts

beta/next.config.js

@@ -6,7 +6,10 @@ const path = require('path');
 const {remarkPlugins} = require('./plugins/markdownToHtml');
 const redirects = require('./src/redirects.json');
 
-module.exports = {
+/**
+ * @type {import('next').NextConfig}
+ **/
+const nextConfig = {
   pageExtensions: ['jsx', 'js', 'ts', 'tsx', 'mdx', 'md'],
   experimental: {
     plugins: true,
@@ -80,3 +83,5 @@ module.exports = {
     return config;
   },
 };
+
+module.exports = nextConfig;

beta/package.json

@@ -44,6 +44,7 @@
     "@mdx-js/loader": "^1.6.16",
     "@types/body-scroll-lock": "^2.6.1",
     "@types/classnames": "^2.2.10",
+    "@types/debounce": "^1.2.1",
     "@types/github-slugger": "^1.3.0",
     "@types/mdx-js__react": "^1.5.2",
     "@types/node": "^14.6.4",

beta/src/components/MDX/Challenges/Navigation.tsx

@@ -6,7 +6,7 @@ import React, {createRef} from 'react';
 import cn from 'classnames';
 import {IconChevron} from 'components/Icon/IconChevron';
 import {ChallengeContents} from './Challenges';
-const debounce = require('debounce');
+import {debounce} from 'debounce';
 
 export function Navigation({
   challenges,

beta/src/components/MDX/Heading.tsx

@@ -4,7 +4,6 @@
 
 import cn from 'classnames';
 import * as React from 'react';
-import {siteConfig} from 'siteConfig';
 import {forwardRefWithAs} from 'utils/forwardRefWithAs';
 export interface HeadingProps {
   className?: string;

beta/yarn.lock

@@ -846,6 +846,11 @@
   dependencies:
     classnames "*"
 
+"@types/debounce@^1.2.1":
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/@types/debounce/-/debounce-1.2.1.tgz#79b65710bc8b6d44094d286aecf38e44f9627852"
+  integrity sha512-epMsEE85fi4lfmJUH/89/iV/LI+F5CvNIvmgs5g5jYFPfhO2S/ae8WSsLOKWdwtoaZw9Q2IhJ4tQ5tFCcS/4HA==
+
 "@types/eslint-visitor-keys@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#1ee30d79544ca84d68d4b3cdb0af4f205663dd2d"