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next.js/client/next-dev.js
2018-05-31 11:47:29 +02:00

40 lines
1.2 KiB
JavaScript

import stripAnsi from 'strip-ansi'
import initNext, * as next from './'
import DevErrorOverlay from './dev-error-overlay'
import initOnDemandEntries from './on-demand-entries-client'
import initWebpackHMR from './webpack-hot-middleware-client'
import {applySourcemaps} from './source-map-support'
window.next = next
initNext({ DevErrorOverlay, applySourcemaps, 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}`))
})