@hackoregon/component-library/es/utils/groupByKey.js

Official repo for Hack Oregon React component library

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var groupByKey = function groupByKey(data, dataSeriesKey, sortByKey) {
  var groupedObj = data.reduce(function (result, item) {
    return _objectSpread({}, result, _defineProperty({}, item[dataSeriesKey], [].concat(_toConsumableArray(result[item[dataSeriesKey]] || []), [item])));
  }, {});
  return Object.keys(groupedObj).map(function (key) {
    var arr = groupedObj[key];
    return arr.sort(function (a, b) {
      return a[sortByKey] > b[sortByKey] ? 1 : -1;
    });
  });
};

export default groupByKey;