text: "use strict";
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports.combineSelections = combineSelections;
  exports.reassemble = reassemble;
  exports.toGradientQuery = toGradientQuery;
  
  var _values2 = _interopRequireDefault(require("lodash/values"));
  
  var _sortBy2 = _interopRequireDefault(require("lodash/sortBy"));
  
  var _identity2 = _interopRequireDefault(require("lodash/identity"));
  
  var _searchUtils = require("../../util/searchUtils");
  
  var _constants = require("../constants");
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
  
  function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
  
  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  
  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
  
  function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
  
  function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
  
  function combineSelections(selections) {
    return (0, _values2.default)(selections.reduce((output, _ref, index) => {
      var _ref2 = _slicedToArray(_ref, 2),
          id = _ref2[0],
          fields = _ref2[1];
  
      var key = (0, _sortBy2.default)(fields.join(','), _identity2.default).join('.');
  
      if (!output[key]) {
        output[key] = {
          fields: fields,
          ids: [],
          map: []
        };
      }
  
      var idx = output[key].ids.length;
      output[key].ids[idx] = id;
      output[key].map[idx] = index;
      return output;
    }, {}));
  }
  
  function stringifyId(id) {
    return JSON.stringify(id);
  }
  
  var maybeEscape = fieldName => (0, _searchUtils.fieldNeedsEscape)(fieldName) ? "\"".concat(fieldName, "\": @").concat((0, _searchUtils.escapeField)(fieldName)) : fieldName;
  
  function toSubQuery(_ref3) {
    var ids = _ref3.ids,
        fields = _ref3.fields;
    var allFields = [..._constants.INCLUDE_FIELDS_QUERY, ...fields];
    return "*[_id in [".concat(ids.map(stringifyId).join(','), "]][0...").concat(ids.length, "]{").concat(allFields.map(maybeEscape).join(','), "}");
  }
  
  function toGradientQuery(combinedSelections) {
    return "[".concat(combinedSelections.map(toSubQuery).join(','), "][0...").concat(combinedSelections.length, "]");
  }
  
  function reassemble(queryResult, combinedSelections) {
    return queryResult.reduce((reprojected, subResult, index) => {
      var map = combinedSelections[index].map;
      map.forEach((resultIdx, i) => {
        var id = combinedSelections[index].ids[i];
        var found = subResult.find(doc => doc._id === id);
        reprojected[resultIdx] = found || null;
      });
      return reprojected;
    }, []);
  }