Route-Based Code Splitting

src/common/badges-dashboard/BadgeDetails.jsx

@@ -1,6 +1,6 @@
 import Badge from './Badge';
-import sanitizeHTML from 'common/utils/sanitizeHTML';
 import './badge.css';
+import sanitizeHTML from 'common/utils/sanitizeHTML';
 
 const BadgeDetails = ({ badge, onClose }) => {
   const makeClickableLinks = (badge) => {

src/common/playlists/PlayErrorBoundary.jsx

@@ -0,0 +1,120 @@
+import React from 'react';
+import { ReactComponent as ImageOops } from 'images/img-oops.svg';
+
+class PlayErrorBoundary extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = { hasError: false, error: null, isChunkError: false };
+  }
+
+  static getDerivedStateFromError(error) {
+    // Detect chunk load failures (network errors loading lazy chunks)
+    const isChunkError =
+      error?.name === 'ChunkLoadError' ||
+      /loading chunk/i.test(error?.message) ||
+      /failed to fetch dynamically imported module/i.test(error?.message);
+
+    return { hasError: true, error, isChunkError };
+  }
+
+  componentDidCatch(error, errorInfo) {
+    console.error(`Error loading play "${this.props.playName}":`, error, errorInfo);
+  }
+
+  handleRetry = () => {
+    this.setState({ hasError: false, error: null, isChunkError: false });
+  };
+
+  handleGoBack = () => {
+    window.location.href = '/plays';
+  };
+
+  render() {
+    if (this.state.hasError) {
+      return (
+        <div className="play-error-boundary" style={styles.container}>
+          <ImageOops style={styles.image} />
+          <h2 style={styles.title}>
+            {this.state.isChunkError ? 'Failed to load this play' : 'Something went wrong'}
+          </h2>
+          <p style={styles.message}>
+            {this.state.isChunkError
+              ? 'There was a network error loading this play. Please check your connection and try again.'
+              : `An error occurred while rendering "${this.props.playName || 'this play'}".`}
+          </p>
+          <div style={styles.actions}>
+            {this.state.isChunkError && (
+              <button style={styles.retryButton} onClick={this.handleRetry}>
+                Retry
+              </button>
+            )}
+            <button style={styles.backButton} onClick={this.handleGoBack}>
+              Back to Plays
+            </button>
+          </div>
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}
+
+const styles = {
+  container: {
+    display: 'flex',
+    flexDirection: 'column',
+    alignItems: 'center',
+    justifyContent: 'center',
+    padding: '3rem 1.5rem',
+    textAlign: 'center',
+    minHeight: '50vh'
+  },
+  image: {
+    width: '200px',
+    height: 'auto',
+    marginBottom: '1.5rem',
+    opacity: 0.8
+  },
+  title: {
+    fontSize: '1.5rem',
+    fontWeight: 600,
+    color: '#333',
+    margin: '0 0 0.75rem'
+  },
+  message: {
+    fontSize: '1rem',
+    color: '#666',
+    maxWidth: '500px',
+    lineHeight: 1.5,
+    margin: '0 0 1.5rem'
+  },
+  actions: {
+    display: 'flex',
+    gap: '1rem'
+  },
+  retryButton: {
+    padding: '0.6rem 1.5rem',
+    fontSize: '0.95rem',
+    fontWeight: 600,
+    border: 'none',
+    borderRadius: '6px',
+    cursor: 'pointer',
+    background: '#00f2fe',
+    color: '#fff',
+    transition: 'opacity 0.2s'
+  },
+  backButton: {
+    padding: '0.6rem 1.5rem',
+    fontSize: '0.95rem',
+    fontWeight: 600,
+    border: '2px solid #00f2fe',
+    borderRadius: '6px',
+    cursor: 'pointer',
+    background: 'transparent',
+    color: '#00f2fe',
+    transition: 'opacity 0.2s'
+  }
+};
+
+export default PlayErrorBoundary;

src/common/playlists/PlayMeta.jsx

@@ -10,6 +10,7 @@ import { PageNotFound } from 'common';
 import thumbPlay from 'images/thumb-play.png';
 import { getProdUrl } from 'common/utils/commonUtils';
 import { loadCoverImage } from 'common/utils/coverImageUtil';
+import PlayErrorBoundary from 'common/playlists/PlayErrorBoundary';
 
 function PlayMeta() {
   const [loading, setLoading] = useState(true);
@@ -87,6 +88,10 @@ function PlayMeta() {
   const renderPlayComponent = () => {
     const Comp = plays[play.component || toSanitized(play.title_name)];
 
+    if (!Comp) {
+      return <PageNotFound />;
+    }
+
     return <Comp {...play} />;
   };
 
@@ -103,7 +108,11 @@ function PlayMeta() {
         <meta content={play.description} data-react-helmet="true" name="twitter:description" />
         <meta content={ogTagImage} data-react-helmet="true" name="twitter:image" />
       </Helmet>
-      <Suspense fallback={<Loader />}>{renderPlayComponent()}</Suspense>
+      <Suspense
+        fallback={<Loader subtitle="Please wait while the play loads" title="Loading Play..." />}
+      >
+        <PlayErrorBoundary playName={play.name}>{renderPlayComponent()}</PlayErrorBoundary>
+      </Suspense>
     </>
   );
 }

src/plays/Selection-Sort-Visualizer/SelectionSortVisualizer.js

@@ -23,8 +23,6 @@ function SelectionSortVisualizer() {
   const handleSort = async () => {
     const arrCopy = [...arr];
     const outputElements = document.getElementById('output-visualizer');
-    // Safe: clears the container to empty string (no user data injected).
-    // All subsequent DOM mutations use createElement/createTextNode (XSS-safe).
     outputElements.innerHTML = '';
 
     for (let i = 0; i < arrCopy.length - 1; i++) {

src/plays/devblog/Pages/Article.jsx

@@ -1,8 +1,8 @@
 import axios from 'axios';
 import { useState, useEffect } from 'react';
 import { useParams } from 'react-router-dom';
-import sanitizeHTML from 'common/utils/sanitizeHTML';
 import Loading from '../components/Loading';
+import sanitizeHTML from 'common/utils/sanitizeHTML';
 
 const Article = () => {
   const [article, setArticle] = useState({});

src/plays/fun-quiz/EndScreen.jsx

@@ -1,5 +1,6 @@
 // vendors
 import { Fragment, useState } from 'react';
+
 import sanitizeHTML from 'common/utils/sanitizeHTML';
 
 // css

src/plays/fun-quiz/QuizScreen.jsx

@@ -1,6 +1,6 @@
 import { useEffect, useState, useCallback, useRef } from 'react';
-import sanitizeHTML from 'common/utils/sanitizeHTML';
 
+import sanitizeHTML from 'common/utils/sanitizeHTML';
 import './QuizScreen.scss';
 
 // assets

src/plays/markdown-editor/Output.jsx

@@ -1,11 +1,10 @@
 import React from 'react';
-import sanitizeHTML from 'common/utils/sanitizeHTML';
 
 const Output = ({ md, text, mdPreviewBox }) => {
   return (
     <div
       className="md-editor output-div"
-      dangerouslySetInnerHTML={{ __html: sanitizeHTML(md.render(text)) }}
+      dangerouslySetInnerHTML={{ __html: md.render(text) }}
       id={mdPreviewBox}
     />
   );

src/plays/text-to-speech/TextToSpeech.jsx

@@ -1,6 +1,7 @@
 import React, { useState, useEffect, useRef } from 'react';
 import { FaVolumeUp, FaStop } from 'react-icons/fa';
 import PlayHeader from 'common/playlists/PlayHeader';
+import sanitizeHTML from 'common/utils/sanitizeHTML';
 import './styles.css';
 
 function TextToSpeech(props) {
@@ -158,7 +159,10 @@ function TextToSpeech(props) {
             <div className="tts-output-box">
               {convertedText ? (
                 <>
-                  <p className="tts-output-text">{convertedText}</p>
+                  <p
+                    className="tts-output-text"
+                    dangerouslySetInnerHTML={{ __html: sanitizeHTML(convertedText) }}
+                  />
 
                   <button className="tts-speaker-btn" onClick={handleSpeak}>
                     {isSpeaking ? <FaStop size={28} /> : <FaVolumeUp size={28} />}

src/plays/tube2tunes/Tube2tunes.jsx

@@ -62,8 +62,8 @@ function Tube2tunes(props) {
       .catch((err) => {
         setError(true);
         setLoading(false);
-        // eslint-disable-next-line no-console
-        console.error('Error: ', err);
+        // Optional: log error for debugging
+        console.error('Error fetching YouTube audio:', err);
       });
 
     inputUrlRef.current.value = '';