zus/lib/zus-core/src/handleActions.js

> a lightweight front-end framework.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _logTips = _interopRequireDefault(require("log-tips"));

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

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

function identify(value) {
  return value;
}

function handleAction(actionType) {
  var reducer = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : identify;
  return function (state, action) {
    var type = action.type;
    (0, _logTips["default"])(type, 'dispatch: action should be a plain Object with type');

    if (actionType === type) {
      return reducer(state, action);
    }

    return state;
  };
}

function reduceReducers() {
  for (var _len = arguments.length, reducers = new Array(_len), _key = 0; _key < _len; _key++) {
    reducers[_key] = arguments[_key];
  }

  return function (previous, current) {
    return reducers.reduce(function (p, r) {
      return r(p, current);
    }, previous);
  };
}

function handleActions(handlers, defaultState) {
  var reducers = Object.keys(handlers).map(function (type) {
    return handleAction(type, handlers[type]);
  });
  var reducer = reduceReducers.apply(void 0, _toConsumableArray(reducers));
  return function () {
    var state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : defaultState;
    var action = arguments.length > 1 ? arguments[1] : undefined;
    return reducer(state, action);
  };
}

var _default = handleActions;
exports["default"] = _default;