moltres-utils/dist/data/getPath.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 _compact = _interopRequireDefault(require("./compact"));

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

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

var _getProp = _interopRequireDefault(require("./getProp"));

var _isArray = _interopRequireDefault(require("../lang/isArray"));

var _isUndefined = _interopRequireDefault(require("../lang/isUndefined"));

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

/**
 * Retrieve the value at a given path.
 *
 * @function
 * @since v0.0.3
 * @category data
 * @typedefn Idx = String | Int
 * @sig [Idx] -> {a} -> a | Undefined
 * @param {Array} path The path to use.
 * @param {Object} obj The object to retrieve the nested property from.
 * @returns {*} The data at `path`.
 * @example
 *
 * getPath(['a', 'b'], {a: {b: 2}}); //=> 2
 * getPath(['a', 'b'], {c: {b: 2}}); //=> undefined
 */
var getPath = (0, _curry.default)((0, _defn.default)('getPath', function (path, obj) {
  if (!(0, _isArray.default)(path)) {
    throw new TypeError("getPath expected path to be an Array. Instead received ".concat(path));
  }

  var pathParts = (0, _compact.default)(path);
  var val = obj;
  var idx = 0;

  while (idx < pathParts.length) {
    val = (0, _getProp.default)(pathParts[idx], val);

    if ((0, _isUndefined.default)(val)) {
      return val;
    }

    idx += 1;
  }

  return val;
}));
var _default = getPath;
exports.default = _default;
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