typescript on both client and server with communication via socket.io

tools/getRandomItems.js

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+export default function getRandomItems(items, count) {
+  const shuffled = [...items];
+
+  // Fisher-Yates shuffle
+  for (let i = shuffled.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
+  }
+
+  return count > shuffled.length ? shuffled : shuffled.slice(0, count);
+}
+

tools/getRandomItems.ts

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+export default function getRandomItems<T>(items: T[], count: number): T[] {
+  const shuffled = [...items];
+
+  // Fisher-Yates shuffle
+  for (let i = shuffled.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
+  }
+
+  return count > shuffled.length ? shuffled : shuffled.slice(0, count);
+} 

tools/simpleID.ts

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+import { customAlphabet } from 'nanoid';
+
+const alphabet =
+  '0123456789abcdefghijklmnopqrstuvwxyz';
+
+const generateID = (length: number = 6) => customAlphabet(alphabet, length);
+
+export default generateID;