mirror of
https://github.com/terribleplan/next.js.git
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190853b4ff
* Support de-deduping head tags by setting key * move dedupe logic to `unique` function * fix head tag deduping logic * remove console.log * use `toContain` assertions * update de-duping head tags section in README
212 lines
5.8 KiB
JavaScript
212 lines
5.8 KiB
JavaScript
import React, { Component } from 'react'
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import PropTypes from 'prop-types'
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import htmlescape from 'htmlescape'
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import flush from 'styled-jsx/server'
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export default class Document extends Component {
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static getInitialProps ({ renderPage }) {
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const { html, head, errorHtml, chunks } = renderPage()
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const styles = flush()
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return { html, head, errorHtml, chunks, styles }
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}
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static childContextTypes = {
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_documentProps: PropTypes.any
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}
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getChildContext () {
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return { _documentProps: this.props }
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}
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render () {
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return <html>
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<Head />
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<body>
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<Main />
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<NextScript />
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</body>
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</html>
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}
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}
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export class Head extends Component {
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static contextTypes = {
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_documentProps: PropTypes.any
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}
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getChunkPreloadLink (filename) {
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const { __NEXT_DATA__ } = this.context._documentProps
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let { buildStats, assetPrefix, buildId } = __NEXT_DATA__
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const hash = buildStats ? buildStats[filename].hash : buildId
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return (
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<link
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key={filename}
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rel='preload'
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href={`${assetPrefix}/_next/${hash}/${filename}`}
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as='script'
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/>
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)
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}
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getPreloadMainLinks () {
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const { dev } = this.context._documentProps
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if (dev) {
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return [
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this.getChunkPreloadLink('manifest.js'),
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this.getChunkPreloadLink('commons.js'),
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this.getChunkPreloadLink('main.js')
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]
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}
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// In the production mode, we have a single asset with all the JS content.
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return [
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this.getChunkPreloadLink('app.js')
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]
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}
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getPreloadDynamicChunks () {
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const { chunks, __NEXT_DATA__ } = this.context._documentProps
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let { assetPrefix, buildId } = __NEXT_DATA__
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return chunks.map((chunk) => (
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<link
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key={chunk}
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rel='preload'
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href={`${assetPrefix}/_next/${buildId}/webpack/chunks/${chunk}`}
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as='script'
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/>
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))
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}
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render () {
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const { head, styles, __NEXT_DATA__ } = this.context._documentProps
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const { pathname, buildId, assetPrefix, nextExport } = __NEXT_DATA__
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const pagePathname = getPagePathname(pathname, nextExport)
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return <head {...this.props}>
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<link rel='preload' href={`${assetPrefix}/_next/${buildId}/page${pagePathname}`} as='script' />
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<link rel='preload' href={`${assetPrefix}/_next/${buildId}/page/_error/index.js`} as='script' />
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{this.getPreloadDynamicChunks()}
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{this.getPreloadMainLinks()}
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{(head || []).map((h, i) => React.cloneElement(h, { key: h.key || i }))}
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{styles || null}
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{this.props.children}
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</head>
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}
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}
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export class Main extends Component {
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static propTypes = {
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className: PropTypes.string
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}
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static contextTypes = {
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_documentProps: PropTypes.any
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}
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render () {
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const { html, errorHtml } = this.context._documentProps
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const { className } = this.props
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return (
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<div className={className}>
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<div id='__next' dangerouslySetInnerHTML={{ __html: html }} />
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<div id='__next-error' dangerouslySetInnerHTML={{ __html: errorHtml }} />
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</div>
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)
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}
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}
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export class NextScript extends Component {
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static propTypes = {
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nonce: PropTypes.string
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}
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static contextTypes = {
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_documentProps: PropTypes.any
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}
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getChunkScript (filename, additionalProps = {}) {
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const { __NEXT_DATA__ } = this.context._documentProps
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let { buildStats, assetPrefix, buildId } = __NEXT_DATA__
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const hash = buildStats ? buildStats[filename].hash : buildId
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return (
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<script
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key={filename}
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type='text/javascript'
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src={`${assetPrefix}/_next/${hash}/${filename}`}
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{...additionalProps}
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/>
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)
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}
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getScripts () {
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const { dev } = this.context._documentProps
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if (dev) {
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return [
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this.getChunkScript('manifest.js'),
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this.getChunkScript('commons.js'),
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this.getChunkScript('main.js')
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]
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}
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// In the production mode, we have a single asset with all the JS content.
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// So, we can load the script with async
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return [this.getChunkScript('app.js', { async: true })]
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}
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getDynamicChunks () {
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const { chunks, __NEXT_DATA__ } = this.context._documentProps
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let { assetPrefix, buildId } = __NEXT_DATA__
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return (
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<div>
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{chunks.map((chunk) => (
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<script
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async
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key={chunk}
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type='text/javascript'
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src={`${assetPrefix}/_next/${buildId}/webpack/chunks/${chunk}`}
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/>
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))}
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</div>
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)
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}
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render () {
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const { staticMarkup, __NEXT_DATA__, chunks } = this.context._documentProps
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const { pathname, nextExport, buildId, assetPrefix } = __NEXT_DATA__
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const pagePathname = getPagePathname(pathname, nextExport)
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__NEXT_DATA__.chunks = chunks
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return <div>
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{staticMarkup ? null : <script nonce={this.props.nonce} dangerouslySetInnerHTML={{
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__html: `
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__NEXT_DATA__ = ${htmlescape(__NEXT_DATA__)}
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module={}
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__NEXT_LOADED_PAGES__ = []
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__NEXT_LOADED_CHUNKS__ = []
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__NEXT_REGISTER_PAGE = function (route, fn) {
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__NEXT_LOADED_PAGES__.push({ route: route, fn: fn })
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}
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__NEXT_REGISTER_CHUNK = function (chunkName, fn) {
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__NEXT_LOADED_CHUNKS__.push({ chunkName: chunkName, fn: fn })
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}
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`
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}} />}
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<script async id={`__NEXT_PAGE__${pathname}`} type='text/javascript' src={`${assetPrefix}/_next/${buildId}/page${pagePathname}`} />
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<script async id={`__NEXT_PAGE__/_error`} type='text/javascript' src={`${assetPrefix}/_next/${buildId}/page/_error/index.js`} />
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{staticMarkup ? null : this.getDynamicChunks()}
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{staticMarkup ? null : this.getScripts()}
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</div>
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}
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}
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function getPagePathname (pathname, nextExport) {
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if (!nextExport) return pathname
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if (pathname === '/') return '/index.js'
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return `${pathname}/index.js`
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}
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