redux-modules/lib/createModuleProvider/registerModule.js

A library for defining clear, boilerplate free Redux reducers.

'use strict';

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

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var registeredModules = {};

var moduleIsRegistered = function moduleIsRegistered(_ref) {
  var name = _ref.name;
  return registeredModules.hasOwnProperty(name);
};

var reducerShouldBeReplaced = function reducerShouldBeReplaced(modules) {
  return !modules.some(moduleIsRegistered);
};

var collectReducers = function collectReducers(_ref2) {
  var name = _ref2.name;
  var reducer = _ref2.reducer;

  // If reducer is already registered, return
  if (typeof reducer[name] !== 'undefined') {
    return registeredModules;
  }
  return _extends({}, registeredModules, _defineProperty({}, name, reducer));
};

var recalculateReducers = function recalculateReducers(combineReducers, store) {
  return function (modules) {
    if (!reducerShouldBeReplaced(modules)) {
      return;
    }
    // eslint-disable-next-line no-console
    console.info('Replacing reducers');
    for (var i = 0; i < modules.length; ++i) {
      registeredModules = collectReducers(modules[i]);
    }
    var reducer = combineReducers(registeredModules);
    store.replaceReducer(reducer);
  };
};

exports.default = recalculateReducers;