moltres-utils/dist/data/filter.js

Utils for Moltres apps

"use strict";

require("core-js/modules/es6.object.define-property");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _curry = _interopRequireDefault(require("../common/curry"));

var _defn = _interopRequireDefault(require("../common/defn"));

var _filterAtIndex = _interopRequireDefault(require("./filterAtIndex"));

var _isArrayLike = _interopRequireDefault(require("../lang/isArrayLike"));

var _isString = _interopRequireDefault(require("../lang/isString"));

var _join = _interopRequireDefault(require("./join"));

var _keys = _interopRequireDefault(require("./keys"));

var _pick = _interopRequireDefault(require("./pick"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// TODO BRN: Improve this method to maintain the original array in memory when no changes are made

/**
 * Takes a predicate and a `Filterable`, and returns a new filterable of the same type containing the members of the given filterable which satisfy the given predicate. Filterable objects include plain objects or any object that has a filter method such as `Array`.
 *
 * Dispatches to the `filter` method of the second argument, if present.
 *
 * Supports async predicates. If a predicate returns a Promise than the entire method will upgrade to async and return a Promise.
 *
 * @function
 * @since v0.0.6
 * @category data
 * @param {Function} fn The predicate function.
 * @param {*} collection The collection to consider.
 * @returns {*} The filtered collection
 * @example
 *
 * const isEven = n => n % 2 === 0;
 *
 * filter(isEven, [1, 2, 3, 4]) //=> [2, 4]
 * filter(isEven, {a: 1, b: 2, c: 3, d: 4}) //=> {b: 2, d: 4}
 *
 * await filter(async (value) => isEven(value), [1, 2, 3, 4]) //=> [2, 4]
 */
var filter = (0, _curry.default)((0, _defn.default)('filter', function (fn, collection) {
  if ((0, _isString.default)(collection)) {
    return (0, _join.default)('', (0, _filterAtIndex.default)(fn, 0, collection));
  }

  if ((0, _isArrayLike.default)(collection)) {
    return (0, _filterAtIndex.default)(fn, 0, collection);
  }

  return (0, _pick.default)((0, _filterAtIndex.default)(function (key) {
    return fn(collection[key], key);
  }, 0, (0, _keys.default)(collection)), collection);
}));
var _default = filter;
exports.default = _default;
//# sourceMappingURL=filter.js.map