moltres-utils/dist/data/pick.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;

require("core-js/modules/es6.function.name");

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

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

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

/**
 * Returns a partial copy of an object containing only the keys specified. If
 * the key does not exist, the property is ignored.
 *
 * Supports Promises. If a Promise is received for either parameter than the entire method will upgrade to async and return a Promise.
 *
 * @function
 * @since v0.0.6
 * @category data
 * @param {Array|Promise<Array>} names an array of String property names to copy onto a new object
 * @param {Object|Promise<Object>} object The object to copy from
 * @returns {Object|Promise<Object>} A new object with only properties from `names` on it.
 * @example
 *
 * pick(['a', 'd'], {a: 1, b: 2, c: 3, d: 4}) //=> {a: 1, d: 4}
 * pick(['a', 'e', 'f'], {a: 1, b: 2, c: 3, d: 4}) //=> {a: 1}
 * await pick(
 *   Promise.resolve(['a', 'd']),
 *   Promise.resolve({a: 1, b: 2, c: 3, d: 4})
 * ) //=> {a: 1, d: 4}
 */
var pick = (0, _curry.default)((0, _defn.default)('pick', function (names, object) {
  var result = {};
  var idx = 0;

  while (idx < names.length) {
    var name = names[idx];

    if (name in object) {
      result[name] = object[name];
    }

    idx += 1;
  }

  return result;
}));
var _default = pick;
exports.default = _default;
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