ewancroft.uk
a moon tracking bot for Bluesky
1export function getRandomElement<T>(arr: readonly T[]): T {
2 if (arr.length === 0) {
3 throw new Error("Cannot get random element from empty array");
4 }
5 return arr[Math.floor(Math.random() * arr.length)];
6}
7
8export function shuffleArray<T>(arr: T[]): T[] {
9 const shuffled = [...arr];
10 for (let i = shuffled.length - 1; i > 0; i--) {
11 const j = Math.floor(Math.random() * (i + 1));
12 [shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
13 }
14 return shuffled;
15}