module.exports = function()

in src/utils/intersection.js [8:27]

• 18 lines of code
• 5 McCabe index (conditional complexity)

module.exports = function(arrays) {
  const result = new Set(arrays[0]);
  let resultSize = result.length;

  let i, value, valuesToCheck;
  for (i = 1; i < arrays.length; i++) {
    valuesToCheck = new Set(arrays[i]);
    for (value of result) {
      if (!valuesToCheck.has(value)) {
        result.delete(value);
        resultSize -= 1;
      }
      if (resultSize === 0) {
        return [];
      }
    }
  }

  return Array.from(result);
};