Function shuffleArray

packages/shared/src/utils/shuffle-array.ts:2–14

(arrToShuffle: Array<T>)

/** Shuffle array using the Fisher–Yates shuffle algorithm */
export const shuffleArray = <T>(arrToShuffle: Array<T>) => {
  const arr = [...arrToShuffle];

  for (let i = arr.length - 1; i > 0; i--) {
    const j = Math.floor(Math.random() * (i + 1));

    // We know that i and j are within the bounds of the array, TS doesn't
    // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
    [arr[i], arr[j]] = [arr[j]!, arr[i]!];
  }

  return arr;
};