redux-modules/lib/createModule/createReducer.js

A library for defining clear, boilerplate free Redux reducers.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
var reduceTransformations = function reduceTransformations(reducerMap, _ref) {
  var formattedConstant = _ref.formattedConstant;
  var reducer = _ref.reducer;

  // eslint-disable-next-line no-param-reassign
  reducerMap[formattedConstant] = reducer;
  return reducerMap;
};

var createReducer = exports.createReducer = function createReducer(initialState, transformations) {
  var reducerMap = transformations.reduce(reduceTransformations, {});
  return function () {
    var state = arguments.length <= 0 || arguments[0] === undefined ? initialState : arguments[0];
    var action = arguments[1];

    var reducer = reducerMap[action.type];
    return typeof reducer !== 'undefined' ? reducer(state, action) : state;
  };
};

exports.default = createReducer;