Build online tic-tac-toe game for two players#223
Build online tic-tac-toe game for two players#223umardarlive wants to merge 1 commit intopatchy631:mainfrom
Conversation
Implemented a serverless online tic-tac-toe game with: - Firebase Realtime Database for real-time synchronization - Room-based multiplayer system - Responsive UI for mobile and desktop - Quick chat functionality - Simple deployment to Vercel/Netlify - No backend code required - Complete setup and deployment documentation
📝 WalkthroughWalkthroughThis pull request introduces a complete, new online multiplayer tic-tac-toe game application featuring Firebase Realtime Database integration, hosting configurations for Vercel and Netlify, responsive styling, and comprehensive documentation. Changes
Sequence DiagramssequenceDiagram
actor Host
actor Guest
participant Client as Client<br/>(Browser)
participant Firebase as Firebase<br/>Realtime DB
Host->>Client: Create game (generates room code)
Client->>Firebase: POST new room with board, players, status
Firebase-->>Client: Room created
Client-->>Host: Display room link
Guest->>Client: Join game (enter room code)
Client->>Firebase: GET room data
Firebase-->>Client: Room data retrieved
Client->>Firebase: SET player O name
Firebase-->>Client: Player joined
Client-->>Guest: Display game board & opponent
Client->>Client: Listen for room changes (onValue)
Host->>Client: Click cell
Client->>Client: Validate move (turn, empty cell)
Client->>Firebase: SET board, currentPlayer, status
Firebase-->>Client: State updated
Firebase-->>Client: Push change event (real-time sync)
Client->>Client: Render board & update status
Client-->>Host: Show guest move
Client-->>Guest: Show host move
alt Game Over (winner detected)
Client->>Firebase: SET gameOver, winner
Firebase-->>Client: Game state updated
Client->>Client: Display winner & disable board
else Draw
Client->>Firebase: SET gameOver (draw)
Firebase-->>Client: Game state updated
Client->>Client: Display draw message
end
sequenceDiagram
actor Player as Player
participant UI as UI Elements
participant GameLogic as Game Logic
participant Firebase as Firebase
Player->>UI: Type chat message
Player->>UI: Click Send
UI->>GameLogic: sendMessage()
GameLogic->>Firebase: PUSH message to room/chat
Firebase-->>GameLogic: Message recorded
GameLogic->>UI: Update chat display
UI-->>Player: Show message in chat
Note over GameLogic,Firebase: Real-time listener active
Firebase->>GameLogic: onValue detects new chat
GameLogic->>UI: renderChat()
UI-->>Player: Display opponent's message
Estimated code review effort🎯 4 (Complex) | ⏱️ ~50 minutes Poem
🚥 Pre-merge checks | ✅ 2 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
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Actionable comments posted: 14
🤖 Fix all issues with AI agents
In `@online-tic-tac-toe/game.html`:
- Around line 43-54: The board cells are non-focusable divs; replace each <div
class="cell" data-index="N"> with a <button type="button" class="cell"
data-index="N" aria-label="Cell N"> to make them keyboard-accessible and
activate with Enter/Space; keep the `#gameBoard` element and its "disabled" class
logic, ensure any JS that queries or binds events to ".cell" (or reads
data-index) still works with buttons, and adjust CSS if necessary to preserve
appearance.
In `@online-tic-tac-toe/game.js`:
- Around line 259-273: The renderChat function currently injects user-controlled
msg.sender and msg.text into chatMessages.innerHTML causing XSS; update
renderChat to avoid innerHTML by creating DOM nodes or using
textContent/innerText for sender and text (e.g., createElement('div') for each
.chat-message, append child elements, and set senderElem.textContent =
msg.sender and textElem.textContent = msg.text) and then append to chatMessages,
preserving the scrollTop update; ensure any existing markup is escaped if you
must keep innerHTML.
- Around line 37-78: The code currently reads URL params and immediately sets
roomDisplay and constructs roomRef which can create/modify `rooms/null` when
`room` or `player` are missing; add a guard that validates `roomCode` and
`playerName` (from URLSearchParams) before touching Firebase or updating the
DOM: if either is falsy, show a user-facing error (or redirect to lobby/home)
and return early, and only then set `roomDisplay.textContent` and create
`roomRef = ref(database, \`rooms/${roomCode}\`)`; update any later uses of
`roomCode`, `playerName`, `roomRef` to assume they exist after this guard.
- Around line 136-161: Replace the current optimistic update in handleCellClick
with a Firebase transaction: import runTransaction and call
runTransaction(roomRef, async (txn) => { read current data (board,
currentPlayer, gameOver) from txn, validate the target cell is empty,
currentPlayer equals mySymbol, and game is not over; if any validation fails,
abort/return without modifying txn; otherwise compute the new board, call
checkWinner(newBoard) inside the transaction, set nextPlayer, and apply
txn.update with board, currentPlayer, and if result set gameOver, winner and
winningCombo; let Firebase retry automatically on conflicts } ) and remove the
out-of-transaction update(roomRef, updates) call, keeping handleCellClick,
mySymbol, checkWinner and roomRef as the anchors for locating the change.
- Around line 28-110: The host initialization currently calls set(roomRef, ...)
which will overwrite an existing room; change this to use
runTransaction(roomRef, tx => { if (tx === null) return { board:
Array(9).fill(null), currentPlayer: 'X', players: { X: playerName, O: null },
gameOver: false, winner: null, chat: [] }; return; }) and handle the returned
promise to detect whether the transaction committed (if committed, proceed to
set mySymbol = 'X' and opponentSymbol = 'O'; if not committed, do not overwrite
and instead read existing state); keep the existing onValue/update logic for
non-host joiners and remove the direct set(roomRef, ...) call.
- Around line 239-257: sendMessage currently does a read-modify-write with
onValue/update which can lose concurrent messages; replace it with a Firebase
transaction using runTransaction: import runTransaction and in sendMessage call
runTransaction(roomRef, (current) => { if (!current) return { chat: [{ sender:
playerName, text: message, timestamp: Date.now() }] }; const chat = current.chat
|| []; chat.push({ sender: playerName, text: message, timestamp: Date.now() });
return { ...current, chat }; }) and then clear chatInput on successful commit
and handle errors in the transaction promise; reference roomRef, sendMessage,
playerName, chatInput and the chat array when making changes.
In `@online-tic-tac-toe/index.html`:
- Around line 81-84: The current validation allows room codes shorter than the
generator's 6-character codes (variable room), causing “Room not found” errors;
update the check in the join flow to require the exact generated length (e.g.,
replace the condition using room.length < 4 with a strict length check like
room.length !== 6) and call showError('Please enter a valid 6-character room
code') when the check fails so the UI enforces the same length as the generator.
- Around line 42-54: The showError function can let an earlier setTimeout hide a
newer message; fix by tracking and clearing the previous timeout before creating
a new one: add a module-scope variable (e.g., errorTimeout) and inside showError
call clearTimeout(errorTimeout) before calling setTimeout, then assign the
returned timeout id to errorTimeout so newer errors are not hidden prematurely;
update references to showError/errorDiv accordingly.
In `@online-tic-tac-toe/netlify.toml`:
- Around line 1-4: The catch-all redirect block ([[redirects]] with from = "/*"
to = "/index.html" status = 200) is rewriting requests for real HTML pages
(e.g., game.html?room=...) to index.html and breaking shared room links; fix it
by excluding existing HTML/static assets: add a specific redirect above the
catch-all that preserves .html (e.g., a [[redirects]] with from = "/*.html" to =
":splat.html" status = 200) or change the catch-all to include conditions that
only apply to SPA routes (so static files are not rewritten), ensuring the new
rule appears before the existing from = "/*" entry.
In `@online-tic-tac-toe/QUICK_START.md`:
- Around line 12-24: Update the README snippet for the Firebase rules block (the
"rules" -> "rooms" -> "$roomId" example) to include a clear security warning
that the provided ".read": true and ".write": true settings are for testing
only, and add a link or pointer to production-ready validation rules (e.g.,
rules that enforce turn order and player assignments) in the full README;
reference the "rules", "rooms", and "$roomId" symbols so reviewers can find the
exact JSON block to amend.
In `@online-tic-tac-toe/README.md`:
- Around line 233-236: In the "Auto-cleanup" section the phrase "1 hour timeout"
should be hyphenated for correct compound adjective usage; update the text under
the "Auto-cleanup" heading to read "1-hour timeout" (i.e., replace "1 hour
timeout" with "1-hour timeout") so the sentence reads correctly.
- Around line 106-149: The section uses bold text for option titles (e.g.,
"**Option A: Using Vercel CLI (Fastest)**", "**Option B: Using Vercel
Website**", "**Option C: Deploy to Netlify**") which triggers markdownlint rule
for emphasis-as-heading; replace each bolded option line with a proper Markdown
heading (e.g., use "### Option A: Using Vercel CLI (Fastest)" etc.) so they
become real headings, update any surrounding lists if needed to maintain
spacing, and ensure consistent heading level for all three options to improve
structure and ToC generation.
- Around line 390-396: The README claims "Works offline after initial load (with
service worker)" but no service worker exists; either remove or correct that
line or add an actual service worker and registration. To fix, either update
README.md to remove or rephrase the offline claim in the "📱 Mobile Tips"
section, or implement a service worker (e.g., add a service-worker.js that
caches assets and register it from your app's bootstrap like index.html or
main.ts/main.js) and then update README.md to mention the service worker by
name; reference the README.md "Works offline after initial load (with service
worker)" text and the app entry where you would register the worker.
- Around line 158-170: The fenced code block showing the project structure in
README.md is missing a language hint which triggers MD040; update the opening
triple-backtick to include a language (e.g., change ``` to ```text) so the block
becomes ```text ... ```, keeping the exact contents (the "online-tic-tac-toe/"
tree) unchanged; this fixes the linter while preserving the project structure
display.
🧹 Nitpick comments (4)
online-tic-tac-toe/vercel.json (1)
4-14: Missing security headers compared to Netlify configuration.The
netlify.tomlincludesX-Frame-Options: DENYandX-Content-Type-Options: nosniff, but this Vercel config only has CORS. For consistent security posture across deployment platforms, consider adding these headers.Suggested fix
{ "version": 2, "public": true, "headers": [ { "source": "/(.*)", "headers": [ { "key": "Access-Control-Allow-Origin", "value": "*" + }, + { + "key": "X-Frame-Options", + "value": "DENY" + }, + { + "key": "X-Content-Type-Options", + "value": "nosniff" } ] } ] }online-tic-tac-toe/package.json (1)
6-9: Redundant scripts:devandserveare identical.Both scripts run the same command. Consider removing one or differentiating them (e.g.,
devon port 8000,serveon 3000)."scripts": { - "dev": "python3 -m http.server 8000", - "serve": "python3 -m http.server 8000" + "dev": "python3 -m http.server 8000" },online-tic-tac-toe/style.css (1)
127-177: Add focus-visible styles for buttons to help keyboard users.This makes focus states consistent with the custom UI.
♿ Proposed improvement
.btn { width: 100%; padding: 15px 30px; border: none; border-radius: 10px; font-size: 1.1rem; font-weight: bold; cursor: pointer; transition: all 0.3s ease; } + +.btn:focus-visible, +.btn-small:focus-visible { + outline: 3px solid `#ffd166`; + outline-offset: 2px; +}online-tic-tac-toe/game.html (1)
21-23: Expose status updates to assistive tech.Adding
role="status"/aria-livehelps screen readers announce turn changes and results.♿ Proposed improvement
- <div id="status" class="status">Waiting for opponent...</div> + <div id="status" class="status" role="status" aria-live="polite">Waiting for opponent...</div>
📜 Review details
Configuration used: defaults
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (10)
online-tic-tac-toe/.gitignoreonline-tic-tac-toe/QUICK_START.mdonline-tic-tac-toe/README.mdonline-tic-tac-toe/game.htmlonline-tic-tac-toe/game.jsonline-tic-tac-toe/index.htmlonline-tic-tac-toe/netlify.tomlonline-tic-tac-toe/package.jsononline-tic-tac-toe/style.cssonline-tic-tac-toe/vercel.json
🧰 Additional context used
🪛 LanguageTool
online-tic-tac-toe/README.md
[grammar] ~235-~235: Use a hyphen to join words.
Context: ...lient-side cleanup for inactive rooms (1 hour timeout). For better cleanup, consi...
(QB_NEW_EN_HYPHEN)
online-tic-tac-toe/QUICK_START.md
[style] ~57-~57: Using many exclamation marks might seem excessive (in this case: 4 exclamation marks for a text that’s 1049 characters long)
Context: ...Game → Share link 3. Friend joins → Play! --- ## Troubleshooting **"Firebase n...
(EN_EXCESSIVE_EXCLAMATION)
🪛 markdownlint-cli2 (0.18.1)
online-tic-tac-toe/README.md
106-106: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
127-127: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
142-142: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
160-160: Fenced code blocks should have a language specified
(MD040, fenced-code-language)
406-406: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
🔇 Additional comments (5)
online-tic-tac-toe/.gitignore (1)
1-26: LGTM!Comprehensive
.gitignorecovering dependencies, build outputs, environment files, OS artifacts, IDE configurations, and logs.online-tic-tac-toe/netlify.toml (1)
9-14: Good security headers configuration.Appropriate headers for a static site: CORS for Firebase communication, clickjacking protection via
X-Frame-Options, and MIME-sniffing prevention.online-tic-tac-toe/QUICK_START.md (1)
1-77: Documentation is clear and well-structured.The quick start guide covers Firebase setup, multiple deployment options, and troubleshooting effectively. Good use of time estimates and visual indicators.
online-tic-tac-toe/package.json (1)
1-21: Configuration is appropriate for a static site project.Empty dependencies are correct since Firebase SDK is loaded via CDN. The
main: index.htmlentry point aligns with the static hosting approach.online-tic-tac-toe/index.html (1)
60-70: Create flow looks solid.Good trimming and URL-encoding of the player name before navigation.
✏️ Tip: You can disable this entire section by setting review_details to false in your review settings.
| <!-- Game Board --> | ||
| <div id="gameBoard" class="game-board disabled"> | ||
| <div class="cell" data-index="0"></div> | ||
| <div class="cell" data-index="1"></div> | ||
| <div class="cell" data-index="2"></div> | ||
| <div class="cell" data-index="3"></div> | ||
| <div class="cell" data-index="4"></div> | ||
| <div class="cell" data-index="5"></div> | ||
| <div class="cell" data-index="6"></div> | ||
| <div class="cell" data-index="7"></div> | ||
| <div class="cell" data-index="8"></div> | ||
| </div> |
There was a problem hiding this comment.
Make board cells keyboard-accessible.
div cells can’t be focused or activated with a keyboard, which blocks play for keyboard-only users. Switching to buttons solves this and still works with your JS.
♿ Proposed fix
- <div id="gameBoard" class="game-board disabled">
- <div class="cell" data-index="0"></div>
- <div class="cell" data-index="1"></div>
- <div class="cell" data-index="2"></div>
- <div class="cell" data-index="3"></div>
- <div class="cell" data-index="4"></div>
- <div class="cell" data-index="5"></div>
- <div class="cell" data-index="6"></div>
- <div class="cell" data-index="7"></div>
- <div class="cell" data-index="8"></div>
- </div>
+ <div id="gameBoard" class="game-board disabled">
+ <button class="cell" type="button" data-index="0" aria-label="Cell 1"></button>
+ <button class="cell" type="button" data-index="1" aria-label="Cell 2"></button>
+ <button class="cell" type="button" data-index="2" aria-label="Cell 3"></button>
+ <button class="cell" type="button" data-index="3" aria-label="Cell 4"></button>
+ <button class="cell" type="button" data-index="4" aria-label="Cell 5"></button>
+ <button class="cell" type="button" data-index="5" aria-label="Cell 6"></button>
+ <button class="cell" type="button" data-index="6" aria-label="Cell 7"></button>
+ <button class="cell" type="button" data-index="7" aria-label="Cell 8"></button>
+ <button class="cell" type="button" data-index="8" aria-label="Cell 9"></button>
+ </div>📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| <!-- Game Board --> | |
| <div id="gameBoard" class="game-board disabled"> | |
| <div class="cell" data-index="0"></div> | |
| <div class="cell" data-index="1"></div> | |
| <div class="cell" data-index="2"></div> | |
| <div class="cell" data-index="3"></div> | |
| <div class="cell" data-index="4"></div> | |
| <div class="cell" data-index="5"></div> | |
| <div class="cell" data-index="6"></div> | |
| <div class="cell" data-index="7"></div> | |
| <div class="cell" data-index="8"></div> | |
| </div> | |
| <!-- Game Board --> | |
| <div id="gameBoard" class="game-board disabled"> | |
| <button class="cell" type="button" data-index="0" aria-label="Cell 1"></button> | |
| <button class="cell" type="button" data-index="1" aria-label="Cell 2"></button> | |
| <button class="cell" type="button" data-index="2" aria-label="Cell 3"></button> | |
| <button class="cell" type="button" data-index="3" aria-label="Cell 4"></button> | |
| <button class="cell" type="button" data-index="4" aria-label="Cell 5"></button> | |
| <button class="cell" type="button" data-index="5" aria-label="Cell 6"></button> | |
| <button class="cell" type="button" data-index="6" aria-label="Cell 7"></button> | |
| <button class="cell" type="button" data-index="7" aria-label="Cell 8"></button> | |
| <button class="cell" type="button" data-index="8" aria-label="Cell 9"></button> | |
| </div> |
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/game.html` around lines 43 - 54, The board cells are
non-focusable divs; replace each <div class="cell" data-index="N"> with a
<button type="button" class="cell" data-index="N" aria-label="Cell N"> to make
them keyboard-accessible and activate with Enter/Space; keep the `#gameBoard`
element and its "disabled" class logic, ensure any JS that queries or binds
events to ".cell" (or reads data-index) still works with buttons, and adjust CSS
if necessary to preserve appearance.
| import { initializeApp } from 'https://www.gstatic.com/firebasejs/10.7.1/firebase-app.js'; | ||
| import { getDatabase, ref, set, onValue, update, remove } from 'https://www.gstatic.com/firebasejs/10.7.1/firebase-database.js'; | ||
|
|
||
| const app = initializeApp(firebaseConfig); | ||
| const database = getDatabase(app); | ||
|
|
||
| // ======================================== | ||
| // GAME STATE | ||
| // ======================================== | ||
| const urlParams = new URLSearchParams(window.location.search); | ||
| const roomCode = urlParams.get('room'); | ||
| const playerName = urlParams.get('player'); | ||
| const isHost = urlParams.get('host') === 'true'; | ||
|
|
||
| let gameState = { | ||
| board: Array(9).fill(null), | ||
| currentPlayer: 'X', | ||
| players: {}, | ||
| gameOver: false, | ||
| winner: null | ||
| }; | ||
|
|
||
| let mySymbol = null; | ||
| let opponentSymbol = null; | ||
|
|
||
| // ======================================== | ||
| // DOM ELEMENTS | ||
| // ======================================== | ||
| const cells = document.querySelectorAll('.cell'); | ||
| const statusDiv = document.getElementById('status'); | ||
| const roomDisplay = document.getElementById('roomDisplay'); | ||
| const copyBtn = document.getElementById('copyBtn'); | ||
| const homeBtn = document.getElementById('homeBtn'); | ||
| const resetBtn = document.getElementById('resetBtn'); | ||
| const player1NameDiv = document.getElementById('player1Name'); | ||
| const player2NameDiv = document.getElementById('player2Name'); | ||
| const player1Info = document.getElementById('player1Info'); | ||
| const player2Info = document.getElementById('player2Info'); | ||
| const gameBoard = document.getElementById('gameBoard'); | ||
| const chatMessages = document.getElementById('chatMessages'); | ||
| const chatInput = document.getElementById('chatInput'); | ||
| const sendBtn = document.getElementById('sendBtn'); | ||
|
|
||
| // ======================================== | ||
| // INITIALIZATION | ||
| // ======================================== | ||
| roomDisplay.textContent = roomCode; | ||
|
|
||
| // Setup room reference | ||
| const roomRef = ref(database, `rooms/${roomCode}`); | ||
|
|
||
| // Initialize room if host | ||
| if (isHost) { | ||
| set(roomRef, { | ||
| board: Array(9).fill(null), | ||
| currentPlayer: 'X', | ||
| players: { | ||
| X: playerName, | ||
| O: null | ||
| }, | ||
| gameOver: false, | ||
| winner: null, | ||
| chat: [] | ||
| }); | ||
| mySymbol = 'X'; | ||
| opponentSymbol = 'O'; | ||
| } else { | ||
| // Join as player O | ||
| mySymbol = 'O'; | ||
| opponentSymbol = 'X'; | ||
|
|
||
| // Update player O name | ||
| onValue(roomRef, (snapshot) => { | ||
| if (snapshot.exists()) { | ||
| const data = snapshot.val(); | ||
| if (!data.players.O) { | ||
| update(roomRef, { | ||
| 'players/O': playerName | ||
| }); | ||
| } | ||
| } | ||
| }, { onlyOnce: true }); | ||
| } |
There was a problem hiding this comment.
🧩 Analysis chain
🏁 Script executed:
find . -name "game.js" -type f | head -20Repository: patchy631/ai-engineering-hub
Length of output: 100
🏁 Script executed:
cat -n online-tic-tac-toe/game.js | sed -n '1,120p'Repository: patchy631/ai-engineering-hub
Length of output: 4814
🌐 Web query:
Firebase Realtime Database v10.7.1 runTransaction API documentation
💡 Result:
Here are the official API docs covering runTransaction for Realtime Database (includes the v10.x SDKs):
- Android (DatabaseReference.runTransaction). Documentation and method signatures. [1]
- Java Admin SDK (DatabaseReference.runTransaction). [2]
- JavaScript SDK (runTransaction(ref, transactionUpdate, options)) — description, parameters and behavior. [3]
- C++ SDK (DatabaseReference::RunTransaction overloads) — signatures and return behavior. [4]
Sources:
[1] https://firebase.google.com/docs/reference/android/com/google/firebase/database/DatabaseReference
[2] https://firebase.google.com/docs/reference/admin/java/reference/com/google/firebase/database/DatabaseReference
[3] https://firebase.google.com/docs/reference/js/database#runtransactionref-transactionupdate-options
[4] https://firebase.google.com/docs/reference/cpp/class/firebase/database/database-reference
If you want a specific language example (Android/Kotlin, JavaScript, C++, or Unity) or the exact v10.7.1 release notes related to transactions, tell me which language and I’ll fetch the exact code samples or release-note entry.
🌐 Web query:
Firebase Realtime Database JavaScript SDK v10.7.1 runTransaction export available
💡 Result:
Yes — the modular Realtime Database SDK exports runTransaction (e.g., export function runTransaction(ref, transactionUpdate, options)). See the Realtime Database JS API reference and the JS release notes (v10.7.1). [1][2]
Sources
- Firebase Realtime Database JS API reference (runTransaction). [1]
- Firebase JavaScript SDK release notes, version 10.7.1 (Dec 5, 2023). [2]
🌐 Web query:
site:firebase.google.com JavaScript SDK v10.7.1 release notes runTransaction
💡 Result:
The Firebase JavaScript SDK v10.7.1 release notes (Dec 5, 2023) do not mention any changes to runTransaction. The release notes page shows the v10.7.1 entry and earlier/later entries; the runTransaction-related change (adding a TransactionOptions param) appears earlier (v9.8.0). See the Firebase JS release notes. [1]
Source: Firebase JavaScript SDK release notes. [1]
🏁 Script executed:
# Check if there are any other references to transactions or initialization patterns in the codebase
rg -i "transaction|set\(roomRef" --type jsRepository: patchy631/ai-engineering-hub
Length of output: 117
Avoid overwriting existing room state on host init.
set(roomRef, ...) will wipe an active room if the host refreshes or a random collision occurs. Use runTransaction for atomic "create-if-empty" initialization.
🧩 Suggested fix (transactional init)
-import { getDatabase, ref, set, onValue, update, remove } from 'https://www.gstatic.com/firebasejs/10.7.1/firebase-database.js';
+import { getDatabase, ref, onValue, update, remove, runTransaction } from 'https://www.gstatic.com/firebasejs/10.7.1/firebase-database.js';
if (isHost) {
- set(roomRef, {
- board: Array(9).fill(null),
- currentPlayer: 'X',
- players: {
- X: playerName,
- O: null
- },
- gameOver: false,
- winner: null,
- chat: []
- });
+ runTransaction(roomRef, (current) => {
+ if (current) return current;
+ return {
+ board: Array(9).fill(null),
+ currentPlayer: 'X',
+ players: { X: playerName, O: null },
+ gameOver: false,
+ winner: null,
+ chat: []
+ };
+ });
mySymbol = 'X';
opponentSymbol = 'O';
}🤖 Prompt for AI Agents
In `@online-tic-tac-toe/game.js` around lines 28 - 110, The host initialization
currently calls set(roomRef, ...) which will overwrite an existing room; change
this to use runTransaction(roomRef, tx => { if (tx === null) return { board:
Array(9).fill(null), currentPlayer: 'X', players: { X: playerName, O: null },
gameOver: false, winner: null, chat: [] }; return; }) and handle the returned
promise to detect whether the transaction committed (if committed, proceed to
set mySymbol = 'X' and opponentSymbol = 'O'; if not committed, do not overwrite
and instead read existing state); keep the existing onValue/update logic for
non-host joiners and remove the direct set(roomRef, ...) call.
| const urlParams = new URLSearchParams(window.location.search); | ||
| const roomCode = urlParams.get('room'); | ||
| const playerName = urlParams.get('player'); | ||
| const isHost = urlParams.get('host') === 'true'; | ||
|
|
||
| let gameState = { | ||
| board: Array(9).fill(null), | ||
| currentPlayer: 'X', | ||
| players: {}, | ||
| gameOver: false, | ||
| winner: null | ||
| }; | ||
|
|
||
| let mySymbol = null; | ||
| let opponentSymbol = null; | ||
|
|
||
| // ======================================== | ||
| // DOM ELEMENTS | ||
| // ======================================== | ||
| const cells = document.querySelectorAll('.cell'); | ||
| const statusDiv = document.getElementById('status'); | ||
| const roomDisplay = document.getElementById('roomDisplay'); | ||
| const copyBtn = document.getElementById('copyBtn'); | ||
| const homeBtn = document.getElementById('homeBtn'); | ||
| const resetBtn = document.getElementById('resetBtn'); | ||
| const player1NameDiv = document.getElementById('player1Name'); | ||
| const player2NameDiv = document.getElementById('player2Name'); | ||
| const player1Info = document.getElementById('player1Info'); | ||
| const player2Info = document.getElementById('player2Info'); | ||
| const gameBoard = document.getElementById('gameBoard'); | ||
| const chatMessages = document.getElementById('chatMessages'); | ||
| const chatInput = document.getElementById('chatInput'); | ||
| const sendBtn = document.getElementById('sendBtn'); | ||
|
|
||
| // ======================================== | ||
| // INITIALIZATION | ||
| // ======================================== | ||
| roomDisplay.textContent = roomCode; | ||
|
|
||
| // Setup room reference | ||
| const roomRef = ref(database, `rooms/${roomCode}`); | ||
|
|
There was a problem hiding this comment.
Guard against missing room/player params before touching Firebase.
Direct navigation to game.html can write to rooms/null and produce a broken session.
🐛 Proposed fix
const roomCode = urlParams.get('room');
const playerName = urlParams.get('player');
const isHost = urlParams.get('host') === 'true';
+
+if (!roomCode || !playerName) {
+ alert('Missing room or player name. Please start from the home page.');
+ window.location.href = 'index.html';
+ throw new Error('Missing room or player name');
+}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const urlParams = new URLSearchParams(window.location.search); | |
| const roomCode = urlParams.get('room'); | |
| const playerName = urlParams.get('player'); | |
| const isHost = urlParams.get('host') === 'true'; | |
| let gameState = { | |
| board: Array(9).fill(null), | |
| currentPlayer: 'X', | |
| players: {}, | |
| gameOver: false, | |
| winner: null | |
| }; | |
| let mySymbol = null; | |
| let opponentSymbol = null; | |
| // ======================================== | |
| // DOM ELEMENTS | |
| // ======================================== | |
| const cells = document.querySelectorAll('.cell'); | |
| const statusDiv = document.getElementById('status'); | |
| const roomDisplay = document.getElementById('roomDisplay'); | |
| const copyBtn = document.getElementById('copyBtn'); | |
| const homeBtn = document.getElementById('homeBtn'); | |
| const resetBtn = document.getElementById('resetBtn'); | |
| const player1NameDiv = document.getElementById('player1Name'); | |
| const player2NameDiv = document.getElementById('player2Name'); | |
| const player1Info = document.getElementById('player1Info'); | |
| const player2Info = document.getElementById('player2Info'); | |
| const gameBoard = document.getElementById('gameBoard'); | |
| const chatMessages = document.getElementById('chatMessages'); | |
| const chatInput = document.getElementById('chatInput'); | |
| const sendBtn = document.getElementById('sendBtn'); | |
| // ======================================== | |
| // INITIALIZATION | |
| // ======================================== | |
| roomDisplay.textContent = roomCode; | |
| // Setup room reference | |
| const roomRef = ref(database, `rooms/${roomCode}`); | |
| const urlParams = new URLSearchParams(window.location.search); | |
| const roomCode = urlParams.get('room'); | |
| const playerName = urlParams.get('player'); | |
| const isHost = urlParams.get('host') === 'true'; | |
| if (!roomCode || !playerName) { | |
| alert('Missing room or player name. Please start from the home page.'); | |
| window.location.href = 'index.html'; | |
| throw new Error('Missing room or player name'); | |
| } | |
| let gameState = { | |
| board: Array(9).fill(null), | |
| currentPlayer: 'X', | |
| players: {}, | |
| gameOver: false, | |
| winner: null | |
| }; | |
| let mySymbol = null; | |
| let opponentSymbol = null; | |
| // ======================================== | |
| // DOM ELEMENTS | |
| // ======================================== | |
| const cells = document.querySelectorAll('.cell'); | |
| const statusDiv = document.getElementById('status'); | |
| const roomDisplay = document.getElementById('roomDisplay'); | |
| const copyBtn = document.getElementById('copyBtn'); | |
| const homeBtn = document.getElementById('homeBtn'); | |
| const resetBtn = document.getElementById('resetBtn'); | |
| const player1NameDiv = document.getElementById('player1Name'); | |
| const player2NameDiv = document.getElementById('player2Name'); | |
| const player1Info = document.getElementById('player1Info'); | |
| const player2Info = document.getElementById('player2Info'); | |
| const gameBoard = document.getElementById('gameBoard'); | |
| const chatMessages = document.getElementById('chatMessages'); | |
| const chatInput = document.getElementById('chatInput'); | |
| const sendBtn = document.getElementById('sendBtn'); | |
| // ======================================== | |
| // INITIALIZATION | |
| // ======================================== | |
| roomDisplay.textContent = roomCode; | |
| // Setup room reference | |
| const roomRef = ref(database, `rooms/${roomCode}`); |
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/game.js` around lines 37 - 78, The code currently reads
URL params and immediately sets roomDisplay and constructs roomRef which can
create/modify `rooms/null` when `room` or `player` are missing; add a guard that
validates `roomCode` and `playerName` (from URLSearchParams) before touching
Firebase or updating the DOM: if either is falsy, show a user-facing error (or
redirect to lobby/home) and return early, and only then set
`roomDisplay.textContent` and create `roomRef = ref(database,
\`rooms/${roomCode}\`)`; update any later uses of `roomCode`, `playerName`,
`roomRef` to assume they exist after this guard.
| function handleCellClick(index) { | ||
| if (gameState.board[index] || gameState.gameOver) return; | ||
| if (gameState.currentPlayer !== mySymbol) return; | ||
|
|
||
| // Make move | ||
| const newBoard = [...gameState.board]; | ||
| newBoard[index] = mySymbol; | ||
|
|
||
| const result = checkWinner(newBoard); | ||
| const nextPlayer = mySymbol === 'X' ? 'O' : 'X'; | ||
|
|
||
| const updates = { | ||
| board: newBoard, | ||
| currentPlayer: nextPlayer | ||
| }; | ||
|
|
||
| if (result) { | ||
| updates.gameOver = true; | ||
| updates.winner = result.winner; | ||
| if (result.combo) { | ||
| updates.winningCombo = result.combo; | ||
| } | ||
| } | ||
|
|
||
| update(roomRef, updates); | ||
| } |
There was a problem hiding this comment.
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🌐 Web query:
Firebase Realtime Database runTransaction v10.7.1 API
💡 Result:
runTransaction (Realtime Database, JS SDK v10.7.1)
Signature
- runTransaction(ref: DatabaseReference, transactionUpdate: (currentData: any) => unknown, options?: TransactionOptions): Promise. [1]
Purpose
- Atomically modify the data at ref by providing an update function that receives the current value and returns the new value. If the node changes while the update is retried, the update function is called again until it succeeds or you abort by returning undefined. [1][2]
Key types
- DatabaseReference — location to modify. [1]
- transactionUpdate(currentData) — function that returns the new value (or undefined to abort). [1]
- TransactionOptions — optional retry/behavior options (see docs). [1]
- TransactionResult — promise result indicating committed status and final snapshot. [1]
Notes
- runTransaction is client-side and requires read + write permission under security rules. Modifying with set() at the same location cancels pending transactions. [1][2]
References
- Firebase JS Realtime Database API reference (runTransaction). [1]
- Modular SDK docs for runTransaction (reference/guide). [2]
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Add transaction-based move validation to prevent race conditions and duplicate moves.
The current implementation performs local state checks before sending updates, but these checks become stale when multiple clients make simultaneous moves. A client can move to an occupied cell or move out of turn if the server state changes between the local check and the update() call. Use Firebase's runTransaction() to atomically validate and apply moves:
- Import
runTransactionfrom the Firebase database module - Move all move validation (empty cell, correct turn, game not over) into the transaction function
- Ensure winner checks and turn advancement happen atomically within the transaction
- Allow Firebase to automatically retry if the board state changes during the transaction
This prevents both clients from claiming the same cell and ensures the game state remains consistent across all connected players.
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/game.js` around lines 136 - 161, Replace the current
optimistic update in handleCellClick with a Firebase transaction: import
runTransaction and call runTransaction(roomRef, async (txn) => { read current
data (board, currentPlayer, gameOver) from txn, validate the target cell is
empty, currentPlayer equals mySymbol, and game is not over; if any validation
fails, abort/return without modifying txn; otherwise compute the new board, call
checkWinner(newBoard) inside the transaction, set nextPlayer, and apply
txn.update with board, currentPlayer, and if result set gameOver, winner and
winningCombo; let Firebase retry automatically on conflicts } ) and remove the
out-of-transaction update(roomRef, updates) call, keeping handleCellClick,
mySymbol, checkWinner and roomRef as the anchors for locating the change.
| function sendMessage() { | ||
| const message = chatInput.value.trim(); | ||
| if (!message) return; | ||
|
|
||
| onValue(roomRef, (snapshot) => { | ||
| if (snapshot.exists()) { | ||
| const data = snapshot.val(); | ||
| const chat = data.chat || []; | ||
| chat.push({ | ||
| sender: playerName, | ||
| text: message, | ||
| timestamp: Date.now() | ||
| }); | ||
|
|
||
| update(roomRef, { chat }); | ||
| chatInput.value = ''; | ||
| } | ||
| }, { onlyOnce: true }); | ||
| } |
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Firebase Realtime Database runTransaction JavaScript SDK 10.7.1
💡 Result:
Short summary — runTransaction in the modular JavaScript Realtime Database SDK (v10.x):
-
Purpose: atomically modify data at a DatabaseReference by providing an update function that receives the current value and returns the new value (or undefined to abort). Returns a Promise that resolves to a TransactionResult. [1][2]
-
Signature (v10.x modular):
runTransaction(ref: DatabaseReference, transactionUpdate: (currentData: any) => unknown, options?: TransactionOptions): Promise. [1] -
Notes:
- If another client writes to the same location, your update function may be retried until it succeeds or you abort. [1]
- Using set() at the same location cancels pending transactions. [1]
- With security rules, clients need .read as well as .write to perform transactions. [1]
Minimal example (modular SDK):
- Imports and usage (TypeScript/ESM-style):
import { getDatabase, ref, runTransaction } from "firebase/database";
const db = getDatabase(app);
const counterRef = ref(db, "counters/visits");
await runTransaction(counterRef, (current) => {
if (current === null) return 1;
return (typeof current === "number") ? current + 1 : current;
});
References:
- Firebase Realtime Database JS reference (runTransaction). [1]
- Modular JS SDK runTransaction docs / reference. [2]
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Use a transaction to prevent concurrent message loss.
The onValue + update pattern is a read-modify-write race. If two clients send messages simultaneously, both read the same chat array, append independently, then write back—causing the first message to be lost (overwritten by the second client's outdated copy).
Add runTransaction to the Firebase import, then replace the function with transactional appends:
Suggested fix
-import { getDatabase, ref, set, onValue, update, remove } from 'https://www.gstatic.com/firebasejs/10.7.1/firebase-database.js';
+import { getDatabase, ref, set, onValue, update, remove, runTransaction } from 'https://www.gstatic.com/firebasejs/10.7.1/firebase-database.js';
function sendMessage() {
const message = chatInput.value.trim();
if (!message) return;
- onValue(roomRef, (snapshot) => {
- if (snapshot.exists()) {
- const data = snapshot.val();
- const chat = data.chat || [];
- chat.push({
- sender: playerName,
- text: message,
- timestamp: Date.now()
- });
-
- update(roomRef, { chat });
- chatInput.value = '';
- }
- }, { onlyOnce: true });
+ const chatRef = ref(database, `rooms/${roomCode}/chat`);
+ runTransaction(chatRef, (chat = []) => {
+ chat.push({
+ sender: playerName,
+ text: message,
+ timestamp: Date.now()
+ });
+ return chat;
+ });
+ chatInput.value = '';
}🤖 Prompt for AI Agents
In `@online-tic-tac-toe/game.js` around lines 239 - 257, sendMessage currently
does a read-modify-write with onValue/update which can lose concurrent messages;
replace it with a Firebase transaction using runTransaction: import
runTransaction and in sendMessage call runTransaction(roomRef, (current) => { if
(!current) return { chat: [{ sender: playerName, text: message, timestamp:
Date.now() }] }; const chat = current.chat || []; chat.push({ sender:
playerName, text: message, timestamp: Date.now() }); return { ...current, chat
}; }) and then clear chatInput on successful commit and handle errors in the
transaction promise; reference roomRef, sendMessage, playerName, chatInput and
the chat array when making changes.
| 3. **Set Rules** (in Rules tab): | ||
| ```json | ||
| { | ||
| "rules": { | ||
| "rooms": { | ||
| "$roomId": { | ||
| ".read": true, | ||
| ".write": true | ||
| } | ||
| } | ||
| } | ||
| } | ||
| ``` |
There was a problem hiding this comment.
Security warning needed for Firebase rules.
The documented rules allow unrestricted read/write access to all rooms. While suitable for quick testing, this is insecure for production and should include a warning. Malicious users could overwrite or delete game state.
Consider adding a note that these are test-only rules, and link to production-ready rules (e.g., validating turn order, player assignments) in the full README.
Suggested addition
3. **Set Rules** (in Rules tab):
```json
{
"rules": {
"rooms": {
"$roomId": {
".read": true,
".write": true
}
}
}
}
```
+ > ⚠️ **Warning**: These rules are for testing only. For production, implement validation rules to prevent cheating and unauthorized modifications.📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| 3. **Set Rules** (in Rules tab): | |
| ```json | |
| { | |
| "rules": { | |
| "rooms": { | |
| "$roomId": { | |
| ".read": true, | |
| ".write": true | |
| } | |
| } | |
| } | |
| } | |
| ``` | |
| 3. **Set Rules** (in Rules tab): |
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/QUICK_START.md` around lines 12 - 24, Update the README
snippet for the Firebase rules block (the "rules" -> "rooms" -> "$roomId"
example) to include a clear security warning that the provided ".read": true and
".write": true settings are for testing only, and add a link or pointer to
production-ready validation rules (e.g., rules that enforce turn order and
player assignments) in the full README; reference the "rules", "rooms", and
"$roomId" symbols so reviewers can find the exact JSON block to amend.
| **Option A: Using Vercel CLI (Fastest)** | ||
|
|
||
| ```bash | ||
| # Install Vercel CLI globally | ||
| npm i -g vercel | ||
|
|
||
| # Deploy (from project directory) | ||
| vercel | ||
|
|
||
| # Follow prompts: | ||
| # - Set up and deploy? Yes | ||
| # - Which scope? Your account | ||
| # - Link to existing project? No | ||
| # - What's your project's name? online-tic-tac-toe | ||
| # - In which directory is your code located? ./ | ||
| # - Want to override settings? No | ||
|
|
||
| # Get production URL | ||
| vercel --prod | ||
| ``` | ||
|
|
||
| **Option B: Using Vercel Website** | ||
|
|
||
| 1. Go to [vercel.com](https://vercel.com) | ||
| 2. Sign up/login (GitHub account recommended) | ||
| 3. Click "Add New" → "Project" | ||
| 4. Import your Git repository (or upload files) | ||
| 5. Configure: | ||
| - Framework Preset: Other | ||
| - Root Directory: ./ | ||
| - Build Command: (leave empty) | ||
| - Output Directory: ./ | ||
| 6. Click "Deploy" | ||
| 7. Wait ~30 seconds | ||
| 8. Get your URL: `https://your-project.vercel.app` | ||
|
|
||
| **Option C: Deploy to Netlify** | ||
|
|
||
| 1. Go to [netlify.com](https://netlify.com) | ||
| 2. Sign up/login | ||
| 3. Drag and drop the `online-tic-tac-toe` folder | ||
| 4. Wait ~30 seconds | ||
| 5. Get your URL: `https://random-name.netlify.app` | ||
|
|
There was a problem hiding this comment.
Use headings for deployment options instead of bold text.
Markdownlint flags emphasis-as-heading here; converting these to headings improves structure and ToC generation.
✏️ Proposed fix
-**Option A: Using Vercel CLI (Fastest)**
+#### Option A: Using Vercel CLI (Fastest)
-**Option B: Using Vercel Website**
+#### Option B: Using Vercel Website
-**Option C: Deploy to Netlify**
+#### Option C: Deploy to Netlify📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| **Option A: Using Vercel CLI (Fastest)** | |
| ```bash | |
| # Install Vercel CLI globally | |
| npm i -g vercel | |
| # Deploy (from project directory) | |
| vercel | |
| # Follow prompts: | |
| # - Set up and deploy? Yes | |
| # - Which scope? Your account | |
| # - Link to existing project? No | |
| # - What's your project's name? online-tic-tac-toe | |
| # - In which directory is your code located? ./ | |
| # - Want to override settings? No | |
| # Get production URL | |
| vercel --prod | |
| ``` | |
| **Option B: Using Vercel Website** | |
| 1. Go to [vercel.com](https://vercel.com) | |
| 2. Sign up/login (GitHub account recommended) | |
| 3. Click "Add New" → "Project" | |
| 4. Import your Git repository (or upload files) | |
| 5. Configure: | |
| - Framework Preset: Other | |
| - Root Directory: ./ | |
| - Build Command: (leave empty) | |
| - Output Directory: ./ | |
| 6. Click "Deploy" | |
| 7. Wait ~30 seconds | |
| 8. Get your URL: `https://your-project.vercel.app` | |
| **Option C: Deploy to Netlify** | |
| 1. Go to [netlify.com](https://netlify.com) | |
| 2. Sign up/login | |
| 3. Drag and drop the `online-tic-tac-toe` folder | |
| 4. Wait ~30 seconds | |
| 5. Get your URL: `https://random-name.netlify.app` | |
| #### Option A: Using Vercel CLI (Fastest) | |
🧰 Tools
🪛 markdownlint-cli2 (0.18.1)
106-106: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
127-127: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
142-142: Emphasis used instead of a heading
(MD036, no-emphasis-as-heading)
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/README.md` around lines 106 - 149, The section uses bold
text for option titles (e.g., "**Option A: Using Vercel CLI (Fastest)**",
"**Option B: Using Vercel Website**", "**Option C: Deploy to Netlify**") which
triggers markdownlint rule for emphasis-as-heading; replace each bolded option
line with a proper Markdown heading (e.g., use "### Option A: Using Vercel CLI
(Fastest)" etc.) so they become real headings, update any surrounding lists if
needed to maintain spacing, and ensure consistent heading level for all three
options to improve structure and ToC generation.
| ## 📁 Project Structure | ||
|
|
||
| ``` | ||
| online-tic-tac-toe/ | ||
| ├── index.html # Home page (create/join room) | ||
| ├── game.html # Game interface | ||
| ├── style.css # All styles | ||
| ├── game.js # Game logic + Firebase integration | ||
| ├── package.json # Project metadata | ||
| ├── vercel.json # Vercel configuration | ||
| ├── .gitignore # Git ignore rules | ||
| └── README.md # This file | ||
| ``` |
There was a problem hiding this comment.
Specify a language for the project structure fence.
MD040 expects a language hint; text is sufficient.
✏️ Proposed fix
-```
+```text
online-tic-tac-toe/
├── index.html # Home page (create/join room)
├── game.html # Game interface
├── style.css # All styles
├── game.js # Game logic + Firebase integration
├── package.json # Project metadata
├── vercel.json # Vercel configuration
├── .gitignore # Git ignore rules
└── README.md # This file
-```
+```📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| ## 📁 Project Structure | |
| ``` | |
| online-tic-tac-toe/ | |
| ├── index.html # Home page (create/join room) | |
| ├── game.html # Game interface | |
| ├── style.css # All styles | |
| ├── game.js # Game logic + Firebase integration | |
| ├── package.json # Project metadata | |
| ├── vercel.json # Vercel configuration | |
| ├── .gitignore # Git ignore rules | |
| └── README.md # This file | |
| ``` | |
| ## 📁 Project Structure | |
🧰 Tools
🪛 markdownlint-cli2 (0.18.1)
160-160: Fenced code blocks should have a language specified
(MD040, fenced-code-language)
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/README.md` around lines 158 - 170, The fenced code block
showing the project structure in README.md is missing a language hint which
triggers MD040; update the opening triple-backtick to include a language (e.g.,
change ``` to ```text) so the block becomes ```text ... ```, keeping the exact
contents (the "online-tic-tac-toe/" tree) unchanged; this fixes the linter while
preserving the project structure display.
| ### Auto-cleanup | ||
|
|
||
| The app includes basic client-side cleanup for inactive rooms (1 hour timeout). For better cleanup, consider: | ||
|
|
There was a problem hiding this comment.
Hyphenate “1-hour timeout.”
Small grammar fix improves clarity.
✏️ Proposed fix
-The app includes basic client-side cleanup for inactive rooms (1 hour timeout). For better cleanup, consider:
+The app includes basic client-side cleanup for inactive rooms (1-hour timeout). For better cleanup, consider:🧰 Tools
🪛 LanguageTool
[grammar] ~235-~235: Use a hyphen to join words.
Context: ...lient-side cleanup for inactive rooms (1 hour timeout). For better cleanup, consi...
(QB_NEW_EN_HYPHEN)
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/README.md` around lines 233 - 236, In the "Auto-cleanup"
section the phrase "1 hour timeout" should be hyphenated for correct compound
adjective usage; update the text under the "Auto-cleanup" heading to read
"1-hour timeout" (i.e., replace "1 hour timeout" with "1-hour timeout") so the
sentence reads correctly.
| ## 📱 Mobile Tips | ||
|
|
||
| - Game is fully responsive | ||
| - Touch controls work out of the box | ||
| - Add to home screen for app-like experience | ||
| - Works offline after initial load (with service worker) | ||
|
|
There was a problem hiding this comment.
Offline support claim doesn’t match current artifacts.
There’s no service worker in the project structure, so “works offline” is misleading unless one is added.
✏️ Proposed fix
-- Works offline after initial load (with service worker)
+- Offline support requires adding a service worker (not included)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| ## 📱 Mobile Tips | |
| - Game is fully responsive | |
| - Touch controls work out of the box | |
| - Add to home screen for app-like experience | |
| - Works offline after initial load (with service worker) | |
| ## 📱 Mobile Tips | |
| - Game is fully responsive | |
| - Touch controls work out of the box | |
| - Add to home screen for app-like experience | |
| - Offline support requires adding a service worker (not included) | |
🤖 Prompt for AI Agents
In `@online-tic-tac-toe/README.md` around lines 390 - 396, The README claims
"Works offline after initial load (with service worker)" but no service worker
exists; either remove or correct that line or add an actual service worker and
registration. To fix, either update README.md to remove or rephrase the offline
claim in the "📱 Mobile Tips" section, or implement a service worker (e.g., add
a service-worker.js that caches assets and register it from your app's bootstrap
like index.html or main.ts/main.js) and then update README.md to mention the
service worker by name; reference the README.md "Works offline after initial
load (with service worker)" text and the app entry where you would register the
worker.
2 participants
Implemented a serverless online tic-tac-toe game with:
Summary by CodeRabbit
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