redux-duck/dist/redux-duck.cjs.development.js

Helper function to create Redux modules using the ducks-modular-redux proposal.

'use strict';

var defaultAction = {
  type: '@@INVALID'
};

function validateCases(cases) {
  if (cases.length === 0) {
    throw new Error('You should pass at least one case name when creating a reducer.');
  }

  var validCases = cases.filter(function (caseName) {
    return caseName !== 'undefined';
  });

  if (validCases.length === 0) {
    throw new Error('All of your action types are undefined.');
  }

  if (validCases.length !== Object.keys(cases).length) {
    throw new Error("One or more of your action types are undefined. Valid cases are: " + validCases.join(', ') + ".");
  }
}

function createDuck(name, app) {
  function defineType(type) {
    if (app) {
      return app + "/" + name + "/" + type;
    }

    return name + "/" + type;
  }

  function createReducer(cases, defaultState) {
    validateCases(Object.keys(cases));
    return function reducer(state, action) {
      if (state === void 0) {
        state = defaultState;
      }

      if (action === void 0) {
        action = defaultAction;
      }

      for (var caseName in cases) {
        if (action.type === caseName) return cases[caseName](state, action);
      }

      return state;
    };
  }

  function createAction(type, isError) {
    if (isError === void 0) {
      isError = false;
    }

    return function actionCreator(payload, meta) {
      return {
        type: type,
        payload: payload,
        error: isError,
        meta: meta
      };
    };
  }

  return {
    defineType: defineType,
    createReducer: createReducer,
    createAction: createAction
  };
}

exports.createDuck = createDuck;
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