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next.js/server/document.js

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2016-12-16 18:42:40 +00:00
import React, { Component, PropTypes } from 'react'
import htmlescape from 'htmlescape'
import { renderStatic } from 'glamor/server'
import flush from 'styled-jsx/server'
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export default class Document extends Component {
static getInitialProps ({ renderPage }) {
let head
let rendered
let styles
try {
rendered = renderStatic(() => {
const page = renderPage()
head = page.head
return page.html
})
} finally {
styles = flush()
}
const { html, css, ids } = rendered
const nextCSS = { css, ids, styles }
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return { html, head, nextCSS }
}
static childContextTypes = {
_documentProps: PropTypes.any
}
constructor (props) {
super(props)
const { __NEXT_DATA__, nextCSS } = props
if (nextCSS) __NEXT_DATA__.ids = nextCSS.ids
}
getChildContext () {
return { _documentProps: this.props }
}
render () {
return <html>
<Head />
<body>
<Main />
<NextScript />
</body>
</html>
}
}
export class Head extends Component {
static contextTypes = {
_documentProps: PropTypes.any
}
render () {
const { head, nextCSS } = this.context._documentProps
return <head>
{(head || []).map((h, i) => React.cloneElement(h, { key: i }))}
{nextCSS && nextCSS.css ? <style dangerouslySetInnerHTML={{ __html: nextCSS.css }} /> : null}
{nextCSS && nextCSS.styles ? nextCSS.styles : null}
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{this.props.children}
</head>
}
}
export class Main extends Component {
static contextTypes = {
_documentProps: PropTypes.any
}
render () {
const { html } = this.context._documentProps
return <div id='__next' dangerouslySetInnerHTML={{ __html: html }} />
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}
}
export class NextScript extends Component {
static contextTypes = {
_documentProps: PropTypes.any
}
render () {
const { staticMarkup, __NEXT_DATA__ } = this.context._documentProps
let { buildId } = __NEXT_DATA__
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return <div>
{staticMarkup ? null : <script dangerouslySetInnerHTML={{
__html: `__NEXT_DATA__ = ${htmlescape(__NEXT_DATA__)}; module={};`
}} />}
{ staticMarkup ? null : <script type='text/javascript' src={`/_next/${buildId}/commons.js`} /> }
{ staticMarkup ? null : <script type='text/javascript' src={`/_next/${buildId}/main.js`} /> }
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</div>
}
}