@bigfishtv/cockpit/es/utils/lifecycleUtils.js

import Immutable from 'immutable';
import { isArray } from './typeUtils';
import _get from 'lodash/get';

/**
 * Takes two objects and a list of paths and checks if any have changed
 * @param  {Object} oldValue
 * @param  {Object} newValue
 * @param  {Array}  fields   Either array of fields or string for a single field
 * @return {Boolean}
 */
export function valueChanged() {
  var oldValue = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  var newValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var fields = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];

  if (!isArray(fields)) fields = [fields];
  for (var _iterator = fields, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
    var _ref;

    if (_isArray) {
      if (_i >= _iterator.length) break;
      _ref = _iterator[_i++];
    } else {
      _i = _iterator.next();
      if (_i.done) break;
      _ref = _i.value;
    }

    var field = _ref;

    if (isArray(field)) field = field.join('.');
    if (_get(oldValue, field) !== _get(newValue, field)) {
      return true;
    }
  }
  return false;
}

/**
 * Takes two form values (or prevProps and props) and checks for any differences in provided field list
 * @param  {Object} oldFormValue 	Either formValue or props object containing formValue
 * @param  {Object} newFormValue 	Either formValue or props object containing formValue
 * @param  {Array} fields 			Either array of fields or string for a single field
 * @return {Boolean}
 */
export function formValueChanged(oldFormValue, newFormValue) {
  var fields = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];

  if ('formValue' in oldFormValue) oldFormValue = oldFormValue.formValue;
  if ('formValue' in newFormValue) newFormValue = newFormValue.formValue;
  oldFormValue = oldFormValue.value || {};
  newFormValue = newFormValue.value || {};
  return valueChanged(oldFormValue, newFormValue, fields);
}

/**
 * Take any array or object and get a hash string for it
 * @param {Object|Array} data
 * @returns {String}
 */
export function getDataHash(data) {
  return Immutable.fromJS(data).hashCode().toString();
}