moltres-utils/dist/data/objectKeys.js

Utils for Moltres apps

"use strict";

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

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

var _hasProp = _interopRequireDefault(require("./hasProp"));

var _isArguments = _interopRequireDefault(require("./isArguments"));

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

// cover IE < 9 keys issues
const hasEnumBug = !{
  toString: null
}.propertyIsEnumerable('toString');
const nonEnumerableProps = ['constructor', 'valueOf', 'isPrototypeOf', 'toString', 'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString']; // Safari bug

const hasArgsEnumBug = function () {
  return arguments.propertyIsEnumerable('length');
}();

const contains = (list, item) => {
  let idx = 0;

  while (idx < list.length) {
    if (list[idx] === item) {
      return true;
    }

    idx += 1;
  }

  return false;
};
/**
 * Returns a list containing the names of all the enumerable own properties of the supplied object.
 * Note that the order of the output array is not guaranteed to be consistent across different JS platforms.
 *
 * @func
 * @since v0.1.0
 * @category data
 * @param {Object} obj The object to extract properties from
 * @returns {Array} An array of the object's own properties.
 * @example
 *
 * objectKeys({a: 1, b: 2, c: 3}) //=> ['a', 'b', 'c']
 */


const objectKeys = typeof Object.keys === 'function' && !hasArgsEnumBug ? (0, _curry.default)(obj => {
  return Object(obj) !== obj ? [] : Object.keys(obj);
}) : (0, _curry.default)(obj => {
  if (Object(obj) !== obj) {
    return [];
  }

  let prop;
  let nIdx;
  const ks = [];
  const checkArgsLength = hasArgsEnumBug && (0, _isArguments.default)(obj);

  for (prop in obj) {
    if ((0, _hasProp.default)(prop, obj) && (!checkArgsLength || prop !== 'length')) {
      ks[ks.length] = prop;
    }
  }

  if (hasEnumBug) {
    nIdx = nonEnumerableProps.length - 1;

    while (nIdx >= 0) {
      prop = nonEnumerableProps[nIdx];

      if ((0, _hasProp.default)(prop, obj) && !contains(ks, prop)) {
        ks[ks.length] = prop;
      }

      nIdx -= 1;
    }
  }

  return ks;
});
var _default = objectKeys;
exports.default = _default;
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