@salesforce/design-system-react/module/components/combobox/add-subheadings.js

Salesforce Lightning Design System for React

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; } }

/* Copyright (c) 2015-present, salesforce.com, inc. All rights reserved */

/* Licensed under BSD 3-Clause - see LICENSE.txt or git.io/sfdc-license */

/**
 * This is a UX pattern recommendation for auto-complete search results that can contain multiple subheadings within the results. It inserts a subheading object based on `option.type === subheading.id` directly before a found option object and only inserts the subheading at the first occurence of that type of option.
 */
var addSubheadings = function addSubheadings(_ref) {
  var _ref2;

  var subheadings = _ref.subheadings,
      filteredOptions = _ref.filteredOptions;

  // Let's not mutate things we don't own.
  var subheadingsNotPresent = _toConsumableArray(subheadings);

  var filteredOptionsWithSubheadings = filteredOptions.map(function (option) {
    var subheadingRelatedToFilteredOption; // Remove subheadings that have been found from
    // `subheadingsNotPresent` and flag if they are
    // found.

    subheadingsNotPresent = subheadingsNotPresent.filter(function (subheading) {
      var subheadingNotPresentInFilteredOptions = true;

      if (option.type === subheading.id) {
        subheadingRelatedToFilteredOption = subheading;
        subheadingNotPresentInFilteredOptions = false;
      }

      return subheadingNotPresentInFilteredOptions;
    }); // So that they can be inserted into the current filtered
    // options in a child array with the first related option
    // OUTPUT
    // Array [
    //   0: Array [
    //     0: {id: "account", label: "Accounts", type: "separator"}
    //     1: {id: "1", label: "Acme", type: "account"}
    //   ]
    // ]

    return subheadingRelatedToFilteredOption ? [subheadingRelatedToFilteredOption, option] : [option];
  }); // flatten and remove child arrays, so that we have one array
  // `...` operates on each array item, not the array

  return (_ref2 = []).concat.apply(_ref2, _toConsumableArray(filteredOptionsWithSubheadings));
};

export default addSubheadings;
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