Method pickRandom

cosplay/cosplay.ts:261–273

(arr: T[], count: number)

  }

  private pickRandom<T>(arr: T[], count: number): T[] {
    if (count >= arr.length) return [...arr];
    const result: T[] = [];
    const used = new Set<number>();
    while (result.length < count) {
      const i = Math.floor(Math.random() * arr.length);
      if (!used.has(i)) {
        used.add(i);
        result.push(arr[i]);
      }
    }
    return result;
  }
}

async function cleanup(files: string[]): Promise<void> {