higher-order-reducers/lib/linked-chain.js

A library of simple everyday reducer utility functions

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
var linkedChain = function linkedChain() {
  var reducers = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];

  for (var i = 0; i < reducers.length; i += 1) {
    if (typeof reducers[i] !== 'function') {
      throw new Error('Element at position ' + i + ' in "linkedChain" is not a reducer');
    }
  }

  var getNext = function getNext(position, action) {
    return function (state) {
      if (position >= reducers.length) {
        return state;
      }
      var next = getNext(position + 1, action);
      if (reducers[position].length < 3) {
        return next(reducers[position](state, action));
      }
      return reducers[position](state, action, next);
    };
  };

  return function (state, action) {
    return getNext(0, action)(state);
  };
};

exports.default = linkedChain;