joel bot

src/utils/random.ts

@@ -0,0 +1,37 @@
+/**
+ * Random utilities
+ */
+
+/**
+ * Returns true with the given probability (0-1)
+ */
+export function chance(probability: number): boolean {
+  return Math.random() < probability;
+}
+
+/**
+ * Pick a random element from an array
+ */
+export function randomElement<T>(array: T[]): T | undefined {
+  if (array.length === 0) return undefined;
+  return array[Math.floor(Math.random() * array.length)];
+}
+
+/**
+ * Shuffle an array (Fisher-Yates)
+ */
+export function shuffle<T>(array: T[]): T[] {
+  const result = [...array];
+  for (let i = result.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [result[i], result[j]] = [result[j], result[i]];
+  }
+  return result;
+}
+
+/**
+ * Generate a random integer between min and max (inclusive)
+ */
+export function randomInt(min: number, max: number): number {
+  return Math.floor(Math.random() * (max - min + 1)) + min;
+}