redux-little-router quick&dirty patch immutable js

store-enhancer.js

  return function (createStore) {
    return function (reducer, initialState, enhancer) {
      var enhancedReducer = function enhancedReducer(state, action) {

//immutable
        var vanillaState = state.delete('router'); 

        var newState = reducer(vanillaState, action);

        // Support redux-loop
        if (Array.isArray(newState)) {
          var nextState = newState[0]; // eslint-disable-line no-magic-numbers
          var nextEffects = newState[1]; // eslint-disable-line no-magic-numbers
          return [_extends({}, nextState, {
            router: (0, _reducer2.default)(state && state.router, action)
          }), nextEffects];
        }
//immutable
        return newState.set('router', (0, _reducer2.default)(state && state.get('router'), action));

      };
//immutable
      var store = createStore(enhancedReducer, pathname || query ? initialState.set('router',
          (0, _initialRouterState2.default)({
            pathname: pathname, query: query || {}, routes: routes, history: history
          })
        ) : initialState, enhancer);