// Set the index-th bith in i32array[0], then wait for it to be un-set again.
module.exports = function ({ i32array, index }) {
  Atomics.or(i32array, 0, 1 << index);
  Atomics.notify(i32array, 0, Infinity);
  do {
    const v = Atomics.load(i32array, 0);
    if (!(v & (1 << index))) break;
    Atomics.wait(i32array, 0, v);
  } while (true);
};