getSamples.js

function getSamples(length) {
  const array = Array.from(this || []);
  const sampleLength = Math.min(length, array.length);
  const result = [];
  while (result.length < sampleLength) {
    const draw = Math.random() * array.length;
    const sample = array.splice(draw, 1).shift();
    result.push(sample);
  }
  return result;
}