Initial commit: migrated from GitHub

Dockerfile

@@ -0,0 +1,20 @@
+# Use Node LTS image
+FROM node:18-alpine
+
+# Set working directory
+WORKDIR /app
+
+# Copy dependency files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the app
+COPY . .
+
+# Expose development port
+EXPOSE 3000
+
+# Start the dev server
+CMD ["npm", "run", "dev"]

docker-compose.yml

@@ -0,0 +1,14 @@
+version: '3.8'
+
+services:
+  chesskit:
+    build: .
+    ports:
+      - "3100:3000"
+    volumes:
+      - .:/app
+      - /app/node_modules  # Prevent overwriting node_modules
+    environment:
+      - NODE_ENV=development
+    stdin_open: true
+    tty: true

src/lib/engine/shared.ts

@@ -4,25 +4,34 @@ import { Stockfish16 } from "./stockfish16";
 import { Stockfish16_1 } from "./stockfish16_1";
 import { Stockfish17 } from "./stockfish17";
 
-export const isWasmSupported = () =>
+export const isWasmSupported = (): boolean =>
   typeof WebAssembly === "object" &&
   WebAssembly.validate(
     Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00)
   );
 
-export const isMultiThreadSupported = () => {
+export const isIosDevice = (): boolean => {
+  if (typeof navigator !== "undefined") {
+    return /iPhone|iPad|iPod/i.test(navigator.userAgent);
+  }
+  return false;
+};
+
+export const isMobileDevice = (): boolean => {
+  if (typeof navigator !== "undefined") {
+    return isIosDevice() || /Android|Opera Mini/i.test(navigator.userAgent);
+  }
+  return false;
+};
+
+export const isMultiThreadSupported = (): boolean => {
   try {
-    return SharedArrayBuffer !== undefined && !isIosDevice();
+    return typeof SharedArrayBuffer !== "undefined" && !isIosDevice();
   } catch {
     return false;
   }
 };
 
-export const isIosDevice = () => /iPhone|iPad|iPod/i.test(navigator.userAgent);
-
-export const isMobileDevice = () =>
-  isIosDevice() || /Android|Opera Mini/i.test(navigator.userAgent);
-
 export const isEngineSupported = (name: EngineName): boolean => {
   switch (name) {
     case EngineName.Stockfish17:
@@ -36,5 +45,7 @@ export const isEngineSupported = (name: EngineName): boolean => {
       return Stockfish16.isSupported();
     case EngineName.Stockfish11:
       return Stockfish11.isSupported();
+    default:
+      return false;
   }
 };

src/lib/engine/worker.ts

@@ -45,16 +45,21 @@ export const sendCommandsToWorker = (
 };
 
 export const getRecommendedWorkersNb = (): number => {
-  const maxWorkersNbFromThreads = Math.max(
+  let maxWorkersNbFromThreads = 4;
-    1,
+  let maxWorkersNbFromMemory = 4;
-    Math.round(navigator.hardwareConcurrency - 4),
-    Math.floor((navigator.hardwareConcurrency * 2) / 3)
-  );
 
-  const maxWorkersNbFromMemory =
+  if (typeof navigator !== "undefined") {
-    "deviceMemory" in navigator && typeof navigator.deviceMemory === "number"
+    maxWorkersNbFromThreads = Math.max(
-      ? Math.max(1, Math.round(navigator.deviceMemory))
+      1,
-      : 4;
+      Math.round(navigator.hardwareConcurrency - 4),
+      Math.floor((navigator.hardwareConcurrency * 2) / 3)
+    );
+
+    maxWorkersNbFromMemory =
+      "deviceMemory" in navigator && typeof navigator.deviceMemory === "number"
+        ? Math.max(1, Math.round(navigator.deviceMemory))
+        : 4;
+  }
 
   const maxWorkersNbFromDevice = isIosDevice() ? 2 : isMobileDevice() ? 4 : 8;
 

src/sections/analysis/states.ts

@@ -1,11 +1,12 @@
 import { DEFAULT_ENGINE } from "@/constants";
-import { getRecommendedWorkersNb } from "@/lib/engine/worker";
+import { getRecommendedWorkersNb } from "@/lib/engine/worker"; // ✅ Already includes navigator guards
 import { EngineName } from "@/types/enums";
 import { CurrentPosition, GameEval, SavedEvals } from "@/types/eval";
 import { Chess } from "chess.js";
 import { atom } from "jotai";
 import { atomWithStorage } from "jotai/utils";
 
+// ✅ Core atoms for game state and UI
 export const gameEvalAtom = atom<GameEval | undefined>(undefined);
 export const gameAtom = atom(new Chess());
 export const boardAtom = atom(new Chess());
@@ -15,13 +16,16 @@ export const boardOrientationAtom = atom(true);
 export const showBestMoveArrowAtom = atom(true);
 export const showPlayerMoveIconAtom = atom(true);
 
+// ✅ Engine config atoms
 export const engineNameAtom = atom<EngineName>(DEFAULT_ENGINE);
 export const engineDepthAtom = atom(14);
 export const engineMultiPvAtom = atom(3);
+
+// ✅ This line is now safe thanks to navigator guards in the function
 export const engineWorkersNbAtom = atomWithStorage(
   "engineWorkersNb",
   getRecommendedWorkersNb()
 );
-export const evaluationProgressAtom = atom(0);
 
+export const evaluationProgressAtom = atom(0);
 export const savedEvalsAtom = atom<SavedEvals>({});