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next.js/lib/document.js
Naoyuki Kanezawa ebecbcf89e Load client js from cdn with fallback (#34)
* load client js from cdn with fallback

* fix cdn url
2016-10-25 01:50:33 -04:00

43 lines
1.3 KiB
JavaScript

import React from 'react'
import htmlescape from 'htmlescape'
import pkg from '../../package.json'
export default ({ head, css, html, data, dev, staticMarkup }) => {
let script
if (!staticMarkup) {
if (dev) {
script = <script type='text/javascript' src='/_next/next-dev.bundle.js' />
} else {
script = <script dangerouslySetInnerHTML={{ __html: `
(function () {
load('https://cdn.zeit.co/next.js/${pkg.version}/next.min.js', function (err) {
if (err) load('/_next/next.bundle.js')
})
function load (src, fn) {
fn = fn || function () {}
var script = document.createElement('script')
script.src = src
script.onload = function () { fn(null) }
script.onerror = fn
script.crossorigin = 'anonymous'
document.head.appendChild(script)
}
})()
`}} />
}
}
return <html>
<head>
{(head || []).map((h, i) => React.cloneElement(h, { key: i }))}
<style dangerouslySetInnerHTML={{ __html: css }} />
</head>
<body>
<div id='__next' dangerouslySetInnerHTML={{ __html: html }} />
{staticMarkup ? null : <script dangerouslySetInnerHTML={{ __html: '__NEXT_DATA__ = ' + htmlescape(data) }} />}
{script}
</body>
</html>
}