feeles-ide/lib/utils/uniqueBy.js

The hackable and serializable IDE to make learning material

import _getIterator from "babel-runtime/core-js/get-iterator";
import _Array$from from "babel-runtime/core-js/array/from";
import _Map from "babel-runtime/core-js/map";
export default function uniqueBy(array, key) {
  var map = new _Map();

  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = _getIterator(array), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var item = _step.value;

      map.set(item[key], item);
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  var values = _Array$from(map.values());
  map.clear();

  return values;
}