use-store-hooks/dist/useMiddleware.js

Create a redux-like store using hooks. Supports middleware

"use strict";

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

var _react = require("react");

var _compose = _interopRequireDefault(require("./compose"));

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

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

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

/**
 *
 * @param {Object} reducer a function which given a state and an action returns the next state
 * @param {*} initialState the initial state
 * @param {Array} middlewares an array of redux friendly middleware
 * @return {Array} A react Hook which you can consume in other React Function Components
 * the hooks is structured as [state, dispatch]
 */
function useMiddleware(_ref) {
  var reducer = _ref.reducer,
      initialState = _ref.initialState,
      _ref$middlewares = _ref.middlewares,
      middlewares = _ref$middlewares === void 0 ? [] : _ref$middlewares;

  var _useState = (0, _react.useState)(initialState),
      _useState2 = _slicedToArray(_useState, 2),
      state = _useState2[0],
      setState = _useState2[1];

  var enhancedDispatch;

  var dispatch = function dispatch(action) {
    // mutation trick
    state = reducer(state, action);
    setState(state);
    return action;
  };

  var middlewareAPI = {
    getState: function getState() {
      return state;
    },
    dispatch: function dispatch() {
      return enhancedDispatch.apply(void 0, arguments);
    }
  };
  var chain = middlewares.map(function (middleware) {
    return middleware(middlewareAPI);
  });
  enhancedDispatch = _compose["default"].apply(void 0, _toConsumableArray(chain))(dispatch);
  return [state, enhancedDispatch];
}

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