object-dig/dist/index.js

This allow you to use method like Ruby's hash#dig in JavaScript.

'use strict';

module.exports = function (target) {
  for (var _len = arguments.length, keys = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
    keys[_key - 1] = arguments[_key];
  }

  var digged = target;
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = keys[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var key = _step.value;

      if (typeof digged === 'undefined' || digged === null) {
        return undefined;
      }
      if (typeof key === 'function') {
        digged = key(digged);
      } else {
        digged = digged[key];
      }
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  ;
  return digged;
};