ramda-adjunct/lib/sortByProps.js

Ramda Adjunct is the most popular and most comprehensive set of utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.

"use strict";

exports.__esModule = true;
exports["default"] = void 0;

var _ramda = require("ramda");

function _toArray(arr) { return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _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 _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

/**
 * Sort a list of objects by a list of props (if first prop value is equivalent, sort by second, etc).
 *
 * @func sortByProps
 * @memberOf RA
 * @since {@link https://char0n.github.io/ramda-adjunct/2.26.0|v2.26.0}
 * @category List
 * @sig [k] -> [{k: v}] -> [{k: v}]
 * @param {Array.<string>} props A list of properties in the list param to sort by
 * @param {Array.<object>} list A list of objects to be sorted
 * @return {Array.<object>} A new list sorted by the properties in the props param
 * @example
 *
 * sortByProps(['num'], [{num: 3}, {num: 2}, {num: 1}])
 * //=> [{num: 1}, {num: 2} {num: 3}]
 * sortByProps(['letter', 'num'], [{num: 3, letter: 'a'}, {num: 2, letter: 'a'} {num: 1, letter: 'z'}])
 * //=> [ {num: 2, letter: 'a'}, {num: 3, letter: 'a'}, {num: 1, letter: 'z'}]
 * sortByProps(['name', 'num'], [{num: 3}, {num: 2}, {num: 1}])
 * //=> [{num: 1}, {num: 2}, {num: 3}]
 */
var sortByProps = (0, _ramda.curry)(function (props, list) {
  var firstTruthy = function firstTruthy(_ref) {
    var _ref2 = _toArray(_ref),
        head = _ref2[0],
        tail = _ref2.slice(1);

    return (0, _ramda.reduce)(_ramda.either, head, tail);
  };

  var makeComparator = function makeComparator(propName) {
    return (0, _ramda.comparator)(function (a, b) {
      return (0, _ramda.lt)((0, _ramda.prop)(propName, a), (0, _ramda.prop)(propName, b));
    });
  };

  return (0, _ramda.sort)(firstTruthy((0, _ramda.map)(makeComparator, props)), list);
});
var _default = sortByProps;
exports["default"] = _default;