Javascript implementation of Python zip and unpack

python-zip-unpack-in-js

/**
 * Takes three arrays and zips them into a list of lists like this:
 *
 * [1,2,3]
 * [a,b,c] -> [ [1,a,!], [2,b,@], [3,c,#] ]
 * [!,@,#]
 */
function zipThreeArrays(a, b, c) {
  let zipped = [];
  for (var i = 0; i < a.length; i++) {
    zipped.push([a[i], b[i], c[i]]);
  }
  return zipped;
}

// Takes dictionary with key -> list pairs and returns a list of lists.
function unpackData(dict) {
  var listOfIndicatorData = [];
  Object.keys(dict["data"]).forEach(function(key) {
    listOfIndicatorData.push([key, dict["data"][key]["value"], dict["data"][key]["signal"]]);
  });

  return listOfIndicatorData;
}