redux-modules/lib/connectModule/createFinalPropsSelector.js

A library for defining clear, boilerplate free Redux reducers.

'use strict';

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

var _deepAssign = require('deep-assign');

var _deepAssign2 = _interopRequireDefault(_deepAssign);

var _createMapStateToProps = require('./createMapStateToProps');

var _createMapStateToProps2 = _interopRequireDefault(_createMapStateToProps);

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

function createFinalPropsSelector(mapStateToProps, mapDispatchToProps) {
  var getState = (0, _createMapStateToProps2.default)(mapStateToProps);
  var dispatch = void 0;
  var lastMerged = void 0;
  var lastOwn = void 0;
  var lastState = void 0;
  return function finalPropsSelector(state, props) {
    var nextState = getState(state, props);
    if (typeof dispatch === 'undefined') {
      dispatch = mapDispatchToProps(dispatch, props);
    }
    if (lastOwn !== props || lastState !== nextState) {
      lastMerged = (0, _deepAssign2.default)({}, nextState, dispatch, props);
      lastOwn = props;
      lastState = nextState;
    }
    return lastMerged;
  };
}