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import 'react-hot-loader/patch'

import stripAnsi from 'strip-ansi'

import initNext, * as next from './'

import ErrorDebugComponent from '../lib/error-debug'

import initOnDemandEntries from './on-demand-entries-client'

import initWebpackHMR from './webpack-hot-middleware-client'

window.next = next

initNext({ ErrorDebugComponent, stripAnsi })

.then((emitter) => {

initOnDemandEntries()

initWebpackHMR()

let lastScroll

emitter.on('before-reactdom-render', ({ Component, ErrorComponent }) => {

// Remember scroll when ErrorComponent is being rendered to later restore it

if (!lastScroll && Component === ErrorComponent) {

const { pageXOffset, pageYOffset } = window

lastScroll = {

x: pageXOffset,

y: pageYOffset

}

}

})

emitter.on('after-reactdom-render', ({ Component, ErrorComponent }) => {

if (lastScroll && Component !== ErrorComponent) {

// Restore scroll after ErrorComponent was replaced with a page component by HMR

const { x, y } = lastScroll

window.scroll(x, y)

lastScroll = null

}

})

})

.catch((err) => {

console.error(stripAnsi(`${err.message}\n${err.stack}`))

})