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Name	Size	Permission
utils	[ DIR ]	drwxrwxr-x
applyMiddleware.js	1.33 KB	-rw-rw-r--
bindActionCreators.js	1.91 KB	-rw-rw-r--
combineReducers.js	5.91 KB	-rw-rw-r--
compose.js	654 B	-rw-rw-r--
createStore.js	12.21 KB	-rw-rw-r--
index.js	455 B	-rw-rw-r--

Code Editor : applyMiddleware.js

import compose from './compose'

/**
 * 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.
 */
export default function applyMiddleware(...middlewares) {
  return (createStore) => (...args) => {
    const store = createStore(...args)
    let dispatch = () => {
      throw new Error(
        'Dispatching while constructing your middleware is not allowed. ' +
          'Other middleware would not be applied to this dispatch.'
      )
    }

const middlewareAPI = {
      getState: store.getState,
      dispatch: (...args) => dispatch(...args),
    }
    const chain = middlewares.map((middleware) => middleware(middlewareAPI))
    dispatch = compose(...chain)(store.dispatch)

return {
      ...store,
      dispatch,
    }
  }
}

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.

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Code Editor : applyMiddleware.js

Urban Research Lab