GoScrobble/web/node_modules/redux/es/redux.js

685 lines
26 KiB
JavaScript

import _objectSpread from '@babel/runtime/helpers/esm/objectSpread2';
/**
* Adapted from React: https://github.com/facebook/react/blob/master/packages/shared/formatProdErrorMessage.js
*
* Do not require this module directly! Use normal throw error calls. These messages will be replaced with error codes
* during build.
* @param {number} code
*/
function formatProdErrorMessage(code) {
return "Minified Redux error #" + code + "; visit https://redux.js.org/Errors?code=" + code + " for the full message or " + 'use the non-minified dev environment for full errors. ';
}
// Inlined version of the `symbol-observable` polyfill
var $$observable = (function () {
return typeof Symbol === 'function' && Symbol.observable || '@@observable';
})();
/**
* These are private action types reserved by Redux.
* For any unknown actions, you must return the current state.
* If the current state is undefined, you must return the initial state.
* Do not reference these action types directly in your code.
*/
var randomString = function randomString() {
return Math.random().toString(36).substring(7).split('').join('.');
};
var ActionTypes = {
INIT: "@@redux/INIT" + randomString(),
REPLACE: "@@redux/REPLACE" + randomString(),
PROBE_UNKNOWN_ACTION: function PROBE_UNKNOWN_ACTION() {
return "@@redux/PROBE_UNKNOWN_ACTION" + randomString();
}
};
/**
* @param {any} obj The object to inspect.
* @returns {boolean} True if the argument appears to be a plain object.
*/
function isPlainObject(obj) {
if (typeof obj !== 'object' || obj === null) return false;
var proto = obj;
while (Object.getPrototypeOf(proto) !== null) {
proto = Object.getPrototypeOf(proto);
}
return Object.getPrototypeOf(obj) === proto;
}
// Inlined / shortened version of `kindOf` from https://github.com/jonschlinkert/kind-of
function miniKindOf(val) {
if (val === void 0) return 'undefined';
if (val === null) return 'null';
var type = typeof val;
switch (type) {
case 'boolean':
case 'string':
case 'number':
case 'symbol':
case 'function':
{
return type;
}
}
if (Array.isArray(val)) return 'array';
if (isDate(val)) return 'date';
if (isError(val)) return 'error';
var constructorName = ctorName(val);
switch (constructorName) {
case 'Symbol':
case 'Promise':
case 'WeakMap':
case 'WeakSet':
case 'Map':
case 'Set':
return constructorName;
} // other
return type.slice(8, -1).toLowerCase().replace(/\s/g, '');
}
function ctorName(val) {
return typeof val.constructor === 'function' ? val.constructor.name : null;
}
function isError(val) {
return val instanceof Error || typeof val.message === 'string' && val.constructor && typeof val.constructor.stackTraceLimit === 'number';
}
function isDate(val) {
if (val instanceof Date) return true;
return typeof val.toDateString === 'function' && typeof val.getDate === 'function' && typeof val.setDate === 'function';
}
function kindOf(val) {
var typeOfVal = typeof val;
if (process.env.NODE_ENV !== 'production') {
typeOfVal = miniKindOf(val);
}
return typeOfVal;
}
/**
* Creates a Redux store that holds the state tree.
* The only way to change the data in the store is to call `dispatch()` on it.
*
* There should only be a single store in your app. To specify how different
* parts of the state tree respond to actions, you may combine several reducers
* into a single reducer function by using `combineReducers`.
*
* @param {Function} reducer A function that returns the next state tree, given
* the current state tree and the action to handle.
*
* @param {any} [preloadedState] The initial state. You may optionally specify it
* to hydrate the state from the server in universal apps, or to restore a
* previously serialized user session.
* If you use `combineReducers` to produce the root reducer function, this must be
* an object with the same shape as `combineReducers` keys.
*
* @param {Function} [enhancer] The store enhancer. You may optionally specify it
* to enhance the store with third-party capabilities such as middleware,
* time travel, persistence, etc. The only store enhancer that ships with Redux
* is `applyMiddleware()`.
*
* @returns {Store} A Redux store that lets you read the state, dispatch actions
* and subscribe to changes.
*/
function createStore(reducer, preloadedState, enhancer) {
var _ref2;
if (typeof preloadedState === 'function' && typeof enhancer === 'function' || typeof enhancer === 'function' && typeof arguments[3] === 'function') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(0) : 'It looks like you are passing several store enhancers to ' + 'createStore(). This is not supported. Instead, compose them ' + 'together to a single function. See https://redux.js.org/tutorials/fundamentals/part-4-store#creating-a-store-with-enhancers for an example.');
}
if (typeof preloadedState === 'function' && typeof enhancer === 'undefined') {
enhancer = preloadedState;
preloadedState = undefined;
}
if (typeof enhancer !== 'undefined') {
if (typeof enhancer !== 'function') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(1) : "Expected the enhancer to be a function. Instead, received: '" + kindOf(enhancer) + "'");
}
return enhancer(createStore)(reducer, preloadedState);
}
if (typeof reducer !== 'function') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(2) : "Expected the root reducer to be a function. Instead, received: '" + kindOf(reducer) + "'");
}
var currentReducer = reducer;
var currentState = preloadedState;
var currentListeners = [];
var nextListeners = currentListeners;
var isDispatching = false;
/**
* This makes a shallow copy of currentListeners so we can use
* nextListeners as a temporary list while dispatching.
*
* This prevents any bugs around consumers calling
* subscribe/unsubscribe in the middle of a dispatch.
*/
function ensureCanMutateNextListeners() {
if (nextListeners === currentListeners) {
nextListeners = currentListeners.slice();
}
}
/**
* Reads the state tree managed by the store.
*
* @returns {any} The current state tree of your application.
*/
function getState() {
if (isDispatching) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(3) : 'You may not call store.getState() while the reducer is executing. ' + 'The reducer has already received the state as an argument. ' + 'Pass it down from the top reducer instead of reading it from the store.');
}
return currentState;
}
/**
* Adds a change listener. It will be called any time an action is dispatched,
* and some part of the state tree may potentially have changed. You may then
* call `getState()` to read the current state tree inside the callback.
*
* You may call `dispatch()` from a change listener, with the following
* caveats:
*
* 1. The subscriptions are snapshotted just before every `dispatch()` call.
* If you subscribe or unsubscribe while the listeners are being invoked, this
* will not have any effect on the `dispatch()` that is currently in progress.
* However, the next `dispatch()` call, whether nested or not, will use a more
* recent snapshot of the subscription list.
*
* 2. The listener should not expect to see all state changes, as the state
* might have been updated multiple times during a nested `dispatch()` before
* the listener is called. It is, however, guaranteed that all subscribers
* registered before the `dispatch()` started will be called with the latest
* state by the time it exits.
*
* @param {Function} listener A callback to be invoked on every dispatch.
* @returns {Function} A function to remove this change listener.
*/
function subscribe(listener) {
if (typeof listener !== 'function') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(4) : "Expected the listener to be a function. Instead, received: '" + kindOf(listener) + "'");
}
if (isDispatching) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(5) : 'You may not call store.subscribe() while the reducer is executing. ' + 'If you would like to be notified after the store has been updated, subscribe from a ' + 'component and invoke store.getState() in the callback to access the latest state. ' + 'See https://redux.js.org/api/store#subscribelistener for more details.');
}
var isSubscribed = true;
ensureCanMutateNextListeners();
nextListeners.push(listener);
return function unsubscribe() {
if (!isSubscribed) {
return;
}
if (isDispatching) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(6) : 'You may not unsubscribe from a store listener while the reducer is executing. ' + 'See https://redux.js.org/api/store#subscribelistener for more details.');
}
isSubscribed = false;
ensureCanMutateNextListeners();
var index = nextListeners.indexOf(listener);
nextListeners.splice(index, 1);
currentListeners = null;
};
}
/**
* Dispatches an action. It is the only way to trigger a state change.
*
* The `reducer` function, used to create the store, will be called with the
* current state tree and the given `action`. Its return value will
* be considered the **next** state of the tree, and the change listeners
* will be notified.
*
* The base implementation only supports plain object actions. If you want to
* dispatch a Promise, an Observable, a thunk, or something else, you need to
* wrap your store creating function into the corresponding middleware. For
* example, see the documentation for the `redux-thunk` package. Even the
* middleware will eventually dispatch plain object actions using this method.
*
* @param {Object} action A plain object representing “what changed”. It is
* a good idea to keep actions serializable so you can record and replay user
* sessions, or use the time travelling `redux-devtools`. An action must have
* a `type` property which may not be `undefined`. It is a good idea to use
* string constants for action types.
*
* @returns {Object} For convenience, the same action object you dispatched.
*
* Note that, if you use a custom middleware, it may wrap `dispatch()` to
* return something else (for example, a Promise you can await).
*/
function dispatch(action) {
if (!isPlainObject(action)) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(7) : "Actions must be plain objects. Instead, the actual type was: '" + kindOf(action) + "'. You may need to add middleware to your store setup to handle dispatching other values, such as 'redux-thunk' to handle dispatching functions. See https://redux.js.org/tutorials/fundamentals/part-4-store#middleware and https://redux.js.org/tutorials/fundamentals/part-6-async-logic#using-the-redux-thunk-middleware for examples.");
}
if (typeof action.type === 'undefined') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(8) : 'Actions may not have an undefined "type" property. You may have misspelled an action type string constant.');
}
if (isDispatching) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(9) : 'Reducers may not dispatch actions.');
}
try {
isDispatching = true;
currentState = currentReducer(currentState, action);
} finally {
isDispatching = false;
}
var listeners = currentListeners = nextListeners;
for (var i = 0; i < listeners.length; i++) {
var listener = listeners[i];
listener();
}
return action;
}
/**
* Replaces the reducer currently used by the store to calculate the state.
*
* You might need this if your app implements code splitting and you want to
* load some of the reducers dynamically. You might also need this if you
* implement a hot reloading mechanism for Redux.
*
* @param {Function} nextReducer The reducer for the store to use instead.
* @returns {void}
*/
function replaceReducer(nextReducer) {
if (typeof nextReducer !== 'function') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(10) : "Expected the nextReducer to be a function. Instead, received: '" + kindOf(nextReducer));
}
currentReducer = nextReducer; // This action has a similiar effect to ActionTypes.INIT.
// Any reducers that existed in both the new and old rootReducer
// will receive the previous state. This effectively populates
// the new state tree with any relevant data from the old one.
dispatch({
type: ActionTypes.REPLACE
});
}
/**
* Interoperability point for observable/reactive libraries.
* @returns {observable} A minimal observable of state changes.
* For more information, see the observable proposal:
* https://github.com/tc39/proposal-observable
*/
function observable() {
var _ref;
var outerSubscribe = subscribe;
return _ref = {
/**
* The minimal observable subscription method.
* @param {Object} observer Any object that can be used as an observer.
* The observer object should have a `next` method.
* @returns {subscription} An object with an `unsubscribe` method that can
* be used to unsubscribe the observable from the store, and prevent further
* emission of values from the observable.
*/
subscribe: function subscribe(observer) {
if (typeof observer !== 'object' || observer === null) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(11) : "Expected the observer to be an object. Instead, received: '" + kindOf(observer) + "'");
}
function observeState() {
if (observer.next) {
observer.next(getState());
}
}
observeState();
var unsubscribe = outerSubscribe(observeState);
return {
unsubscribe: unsubscribe
};
}
}, _ref[$$observable] = function () {
return this;
}, _ref;
} // When a store is created, an "INIT" action is dispatched so that every
// reducer returns their initial state. This effectively populates
// the initial state tree.
dispatch({
type: ActionTypes.INIT
});
return _ref2 = {
dispatch: dispatch,
subscribe: subscribe,
getState: getState,
replaceReducer: replaceReducer
}, _ref2[$$observable] = observable, _ref2;
}
/**
* Prints a warning in the console if it exists.
*
* @param {String} message The warning message.
* @returns {void}
*/
function warning(message) {
/* eslint-disable no-console */
if (typeof console !== 'undefined' && typeof console.error === 'function') {
console.error(message);
}
/* eslint-enable no-console */
try {
// This error was thrown as a convenience so that if you enable
// "break on all exceptions" in your console,
// it would pause the execution at this line.
throw new Error(message);
} catch (e) {} // eslint-disable-line no-empty
}
function getUnexpectedStateShapeWarningMessage(inputState, reducers, action, unexpectedKeyCache) {
var reducerKeys = Object.keys(reducers);
var argumentName = action && action.type === ActionTypes.INIT ? 'preloadedState argument passed to createStore' : 'previous state received by the reducer';
if (reducerKeys.length === 0) {
return 'Store does not have a valid reducer. Make sure the argument passed ' + 'to combineReducers is an object whose values are reducers.';
}
if (!isPlainObject(inputState)) {
return "The " + argumentName + " has unexpected type of \"" + kindOf(inputState) + "\". Expected argument to be an object with the following " + ("keys: \"" + reducerKeys.join('", "') + "\"");
}
var unexpectedKeys = Object.keys(inputState).filter(function (key) {
return !reducers.hasOwnProperty(key) && !unexpectedKeyCache[key];
});
unexpectedKeys.forEach(function (key) {
unexpectedKeyCache[key] = true;
});
if (action && action.type === ActionTypes.REPLACE) return;
if (unexpectedKeys.length > 0) {
return "Unexpected " + (unexpectedKeys.length > 1 ? 'keys' : 'key') + " " + ("\"" + unexpectedKeys.join('", "') + "\" found in " + argumentName + ". ") + "Expected to find one of the known reducer keys instead: " + ("\"" + reducerKeys.join('", "') + "\". Unexpected keys will be ignored.");
}
}
function assertReducerShape(reducers) {
Object.keys(reducers).forEach(function (key) {
var reducer = reducers[key];
var initialState = reducer(undefined, {
type: ActionTypes.INIT
});
if (typeof initialState === 'undefined') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(12) : "The slice reducer for key \"" + key + "\" returned undefined during initialization. " + "If the state passed to the reducer is undefined, you must " + "explicitly return the initial state. The initial state may " + "not be undefined. If you don't want to set a value for this reducer, " + "you can use null instead of undefined.");
}
if (typeof reducer(undefined, {
type: ActionTypes.PROBE_UNKNOWN_ACTION()
}) === 'undefined') {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(13) : "The slice reducer for key \"" + key + "\" returned undefined when probed with a random type. " + ("Don't try to handle '" + ActionTypes.INIT + "' or other actions in \"redux/*\" ") + "namespace. They are considered private. Instead, you must return the " + "current state for any unknown actions, unless it is undefined, " + "in which case you must return the initial state, regardless of the " + "action type. The initial state may not be undefined, but can be null.");
}
});
}
/**
* Turns an object whose values are different reducer functions, into a single
* reducer function. It will call every child reducer, and gather their results
* into a single state object, whose keys correspond to the keys of the passed
* reducer functions.
*
* @param {Object} reducers An object whose values correspond to different
* reducer functions that need to be combined into one. One handy way to obtain
* it is to use ES6 `import * as reducers` syntax. The reducers may never return
* undefined for any action. Instead, they should return their initial state
* if the state passed to them was undefined, and the current state for any
* unrecognized action.
*
* @returns {Function} A reducer function that invokes every reducer inside the
* passed object, and builds a state object with the same shape.
*/
function combineReducers(reducers) {
var reducerKeys = Object.keys(reducers);
var finalReducers = {};
for (var i = 0; i < reducerKeys.length; i++) {
var key = reducerKeys[i];
if (process.env.NODE_ENV !== 'production') {
if (typeof reducers[key] === 'undefined') {
warning("No reducer provided for key \"" + key + "\"");
}
}
if (typeof reducers[key] === 'function') {
finalReducers[key] = reducers[key];
}
}
var finalReducerKeys = Object.keys(finalReducers); // This is used to make sure we don't warn about the same
// keys multiple times.
var unexpectedKeyCache;
if (process.env.NODE_ENV !== 'production') {
unexpectedKeyCache = {};
}
var shapeAssertionError;
try {
assertReducerShape(finalReducers);
} catch (e) {
shapeAssertionError = e;
}
return function combination(state, action) {
if (state === void 0) {
state = {};
}
if (shapeAssertionError) {
throw shapeAssertionError;
}
if (process.env.NODE_ENV !== 'production') {
var warningMessage = getUnexpectedStateShapeWarningMessage(state, finalReducers, action, unexpectedKeyCache);
if (warningMessage) {
warning(warningMessage);
}
}
var hasChanged = false;
var nextState = {};
for (var _i = 0; _i < finalReducerKeys.length; _i++) {
var _key = finalReducerKeys[_i];
var reducer = finalReducers[_key];
var previousStateForKey = state[_key];
var nextStateForKey = reducer(previousStateForKey, action);
if (typeof nextStateForKey === 'undefined') {
var actionType = action && action.type;
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(14) : "When called with an action of type " + (actionType ? "\"" + String(actionType) + "\"" : '(unknown type)') + ", the slice reducer for key \"" + _key + "\" returned undefined. " + "To ignore an action, you must explicitly return the previous state. " + "If you want this reducer to hold no value, you can return null instead of undefined.");
}
nextState[_key] = nextStateForKey;
hasChanged = hasChanged || nextStateForKey !== previousStateForKey;
}
hasChanged = hasChanged || finalReducerKeys.length !== Object.keys(state).length;
return hasChanged ? nextState : state;
};
}
function bindActionCreator(actionCreator, dispatch) {
return function () {
return dispatch(actionCreator.apply(this, arguments));
};
}
/**
* Turns an object whose values are action creators, into an object with the
* same keys, but with every function wrapped into a `dispatch` call so they
* may be invoked directly. This is just a convenience method, as you can call
* `store.dispatch(MyActionCreators.doSomething())` yourself just fine.
*
* For convenience, you can also pass an action creator as the first argument,
* and get a dispatch wrapped function in return.
*
* @param {Function|Object} actionCreators An object whose values are action
* creator functions. One handy way to obtain it is to use ES6 `import * as`
* syntax. You may also pass a single function.
*
* @param {Function} dispatch The `dispatch` function available on your Redux
* store.
*
* @returns {Function|Object} The object mimicking the original object, but with
* every action creator wrapped into the `dispatch` call. If you passed a
* function as `actionCreators`, the return value will also be a single
* function.
*/
function bindActionCreators(actionCreators, dispatch) {
if (typeof actionCreators === 'function') {
return bindActionCreator(actionCreators, dispatch);
}
if (typeof actionCreators !== 'object' || actionCreators === null) {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(16) : "bindActionCreators expected an object or a function, but instead received: '" + kindOf(actionCreators) + "'. " + "Did you write \"import ActionCreators from\" instead of \"import * as ActionCreators from\"?");
}
var boundActionCreators = {};
for (var key in actionCreators) {
var actionCreator = actionCreators[key];
if (typeof actionCreator === 'function') {
boundActionCreators[key] = bindActionCreator(actionCreator, dispatch);
}
}
return boundActionCreators;
}
/**
* Composes single-argument functions from right to left. The rightmost
* function can take multiple arguments as it provides the signature for
* the resulting composite function.
*
* @param {...Function} funcs The functions to compose.
* @returns {Function} A function obtained by composing the argument functions
* from right to left. For example, compose(f, g, h) is identical to doing
* (...args) => f(g(h(...args))).
*/
function compose() {
for (var _len = arguments.length, funcs = new Array(_len), _key = 0; _key < _len; _key++) {
funcs[_key] = arguments[_key];
}
if (funcs.length === 0) {
return function (arg) {
return arg;
};
}
if (funcs.length === 1) {
return funcs[0];
}
return funcs.reduce(function (a, b) {
return function () {
return a(b.apply(void 0, arguments));
};
});
}
/**
* Creates a store enhancer that applies middleware to the dispatch method
* of the Redux store. This is handy for a variety of tasks, such as expressing
* asynchronous actions in a concise manner, or logging every action payload.
*
* See `redux-thunk` package as an example of the Redux middleware.
*
* Because middleware is potentially asynchronous, this should be the first
* store enhancer in the composition chain.
*
* Note that each middleware will be given the `dispatch` and `getState` functions
* as named arguments.
*
* @param {...Function} middlewares The middleware chain to be applied.
* @returns {Function} A store enhancer applying the middleware.
*/
function applyMiddleware() {
for (var _len = arguments.length, middlewares = new Array(_len), _key = 0; _key < _len; _key++) {
middlewares[_key] = arguments[_key];
}
return function (createStore) {
return function () {
var store = createStore.apply(void 0, arguments);
var _dispatch = function dispatch() {
throw new Error(process.env.NODE_ENV === "production" ? formatProdErrorMessage(15) : 'Dispatching while constructing your middleware is not allowed. ' + 'Other middleware would not be applied to this dispatch.');
};
var middlewareAPI = {
getState: store.getState,
dispatch: function dispatch() {
return _dispatch.apply(void 0, arguments);
}
};
var chain = middlewares.map(function (middleware) {
return middleware(middlewareAPI);
});
_dispatch = compose.apply(void 0, chain)(store.dispatch);
return _objectSpread(_objectSpread({}, store), {}, {
dispatch: _dispatch
});
};
};
}
/*
* This is a dummy function to check if the function name has been altered by minification.
* If the function has been minified and NODE_ENV !== 'production', warn the user.
*/
function isCrushed() {}
if (process.env.NODE_ENV !== 'production' && typeof isCrushed.name === 'string' && isCrushed.name !== 'isCrushed') {
warning('You are currently using minified code outside of NODE_ENV === "production". ' + 'This means that you are running a slower development build of Redux. ' + 'You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify ' + 'or setting mode to production in webpack (https://webpack.js.org/concepts/mode/) ' + 'to ensure you have the correct code for your production build.');
}
export { ActionTypes as __DO_NOT_USE__ActionTypes, applyMiddleware, bindActionCreators, combineReducers, compose, createStore };