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html.js
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html.js
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import React from 'react'
import Helmet from 'react-helmet'
// special runtime modules not in npm
import { prefixLink } from 'gatsby-helpers'
import { config } from 'config'
const BUILD_TIME = new Date().getTime()
const HTML = (props) => {
const head = Helmet.rewind()
// only include bundle.js if we are running in production mode
// and noProductionJavascript is set as true
let js = <script src={prefixLink(`/bundle.js?t=${BUILD_TIME}`)} />
if (process.env.NODE_ENV === 'production' && config.noProductionJavascript) {
js = null
}
// include link to the css file if we are running in production mode
let css
if (process.env.NODE_ENV === 'production') {
css = <link rel="stylesheet" href={prefixLink(`/styles.css?t=${BUILD_TIME}`)} />
}
return (
<html lang="en">
<head>
<meta charSet="utf-8" />
<meta httpEquiv="X-UA-Compatible" content="IE=edge" />
<meta
name="viewport"
content="width=device-width, initial-scale=1.0"
/>
{head.title.toComponent()}
{head.meta.toComponent()}
{css}
</head>
<body>
<div id="react-mount" dangerouslySetInnerHTML={{ __html: props.body }} />
{js}
</body>
</html>
)
}
export default HTML