redux-action/build/create-action.js

redux action utils

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = createAction;

var _util = require('./util');

var _v = require('uuid/v1');

var _v2 = _interopRequireDefault(_v);

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

function noop() {
  var payload = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

  return payload;
}

function createAction(type, payloadCreator, metaCreator) {
  var autoType = '';

  if (!(0, _util.isString)(type)) {
    metaCreator = payloadCreator;
    payloadCreator = type;
    type = autoType = (0, _v2.default)();
  }

  payloadCreator = (0, _util.isFunc)(payloadCreator) ? payloadCreator : noop;

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

    return function (dispatch, getState) {
      return Promise.resolve(payloadCreator.apply({ getState: getState }, args)).then(function () {
        var payload = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

        var result = {
          payload: payload,
          type: type
        };

        if ((0, _util.isFunc)(metaCreator)) {
          result.meta = metaCreator.apply(undefined, args);
        }

        dispatch(result);
        /**
         * why need to return result
         * use case
         *   dispatch(...).then(result => ...)
         * warning: no test cases for this (TODO)
         */
        return result;
      });
    };
  };

  fn.type = type;

  if (autoType) {
    fn.toString = function () {
      return type;
    };
  }

  return fn;
}