Action Creator 中间件

一个自定义中间件，用于检测是否错误地派发了 Action Creator，而不是在派发之前调用它。

一个常见的错误是调用 dispatch(actionCreator) 而不是 dispatch(actionCreator())。这通常“有效”，因为 Action Creator 具有静态 type 属性，但会导致意外行为。

选项

export interface ActionCreatorInvariantMiddlewareOptions {
  /**
   * The function to identify whether a value is an action creator.
   * The default checks for a function with a static type property and match method.
   */
  isActionCreator?: (action: unknown) => action is Function & { type?: unknown }
}

导出

createActionCreatorInvariantMiddleware

使用给定选项创建 Action Creator 检查中间件的实例。

您很可能不需要自己调用它，因为 getDefaultMiddleware 已经这样做了。示例

TypeScript

import {
  configureStore,
  createActionCreatorInvariantMiddleware,
  Tuple,
} from '@reduxjs/toolkit'
import reducer from './reducer'

// Augment middleware to consider all functions with a static type property to be action creators
const isActionCreator = (
  action: unknown
): action is Function & { type: unknown } =>
  typeof action === 'function' && 'type' in action

const actionCreatorMiddleware = createActionCreatorInvariantMiddleware({
  isActionCreator,
})

const store = configureStore({
  reducer,
  middleware: () => new Tuple(actionCreatorMiddleware),
})

JavaScript

import {
  configureStore,
  createActionCreatorInvariantMiddleware,
  Tuple,
} from '@reduxjs/toolkit'
import reducer from './reducer'

// Augment middleware to consider all functions with a static type property to be action creators
const isActionCreator = (action) =>
  typeof action === 'function' && 'type' in action

const actionCreatorMiddleware = createActionCreatorInvariantMiddleware({
  isActionCreator,
})

const store = configureStore({
  reducer,
  middleware: () => new Tuple(actionCreatorMiddleware),
})