/**
* Copyright (c) 2017-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
const React = require('react');
// html head for each page
class Head extends React.Component {
render() {
const links = this.props.config.headerLinks;
const hasBlog = links.some(link => link.blog);
const highlight = {
version: '9.12.0',
theme: 'default',
...this.props.config.highlight,
};
// Use user-provided themeUrl if it exists, else construct one from version and theme.
const highlightThemeURL = highlight.themeUrl
? highlight.themeUrl
: `//cdnjs.cloudflare.com/ajax/libs/highlight.js/${
highlight.version
}/styles/${highlight.theme}.min.css`;
// ensure the siteUrl variable ends with a single slash
const siteUrl = `${(
this.props.config.url + this.props.config.baseUrl
).replace(/\/+$/, '')}/`;
return (
{this.props.title}
{this.props.version && (
)}
{this.props.language && (
)}
{this.props.config.ogImage && (
)}
{this.props.config.twitterImage && (
)}
{this.props.config.noIndex && }
{this.props.redirect && (
)}
{this.props.config.manifest && (
)}
{this.props.config.algolia && (
)}
{hasBlog && (
)}
{hasBlog && (
)}
{this.props.config.gaTrackingId && this.props.config.gaGtag && (
)}
{this.props.config.gaTrackingId && this.props.config.gaGtag && (
)}
{this.props.config.gaTrackingId && !this.props.config.gaGtag && (
)}
{/* External resources */}
{this.props.config.stylesheets &&
this.props.config.stylesheets.map(source =>
source.href ? (
) : (
),
)}
{this.props.config.scripts &&
this.props.config.scripts.map(source =>
source.src ? (
) : (
),
)}
{this.props.config.scrollToTop && (
)}
{this.props.config.scrollToTop && (
)}
{this.props.config.usePrism && (
)}
{/* Site defined code. Keep these at the end to avoid overriding. */}
);
}
}
module.exports = Head;